[Bug 373245] [NEW] wakeups <kernel core> : hrtimer_start_range_ns (tick_sched_timer)

Andrew M andrew at miniatureworldmaker.com.au
Thu May 7 13:22:52 UTC 2009


Public bug reported:

Powertop reports a high number of wake ups attributed to 
hrtimer_start_range_ns.


This  occurs with the 2.6.28-11 kernel through to
2.6.30-020630rc4-generic #020630rc4

#uname -a
Linux portland 2.6.30-020630rc4-generic #020630rc4 SMP Fri May 1 09:06:03 UTC 2009 i686 GNU/Linux

Not sure if it makes much difference but i'm currently using UXA
graphics accel.


root at portland:~# lsb_release -rd
Description:    Ubuntu 9.04
Release:        9.04


root at portland:~# powertop
PowerTOP 1.11   (C) 2007, 2008 Intel Corporation 

Collecting data for 5 seconds


Your CPU supports the following C-states : C1 C2 C3 C4 C5 C6 
Your BIOS reports the following C-states : C1 C2 C6          
root at portland:~# powertop -d                                 
PowerTOP 1.11   (C) 2007, 2008 Intel Corporation             

Collecting data for 15 seconds


Your CPU supports the following C-states : C1 C2 C3 C4 C5 C6 
Your BIOS reports the following C-states : C1 C2 C6          
Cn                Avg residency                              
C0 (cpu running)        ( 5.5%)                              
polling           0.0ms ( 0.0%)                              
C1 mwait          0.0ms ( 0.0%)                              
C2 mwait          0.2ms ( 0.1%)                              
C6 mwait          8.2ms (94.4%)                              
P-states (frequencies)                                       
  2.27 Ghz     3.0%                                          
  2.27 Ghz     0.5%                                          
  1.60 Ghz     1.3%                                          
   800 Mhz    95.2%                                          
Wakeups-from-idle per second : 119.1    interval: 15.0s      
Power usage (ACPI estimate): 10.6W (2.0 hours)               
Top causes for wakeups:                                      
  35.2% ( 66.3)     <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 
  16.1% ( 30.4)      <kernel IPI> : Rescheduling interrupts                   
  15.4% ( 29.0)       <interrupt> : PS/2 keyboard/mouse/touchpad              
  10.4% ( 19.7)       <interrupt> : iwlagn                                    
   8.3% ( 15.7)       <interrupt> : extra timer interrupt                     
   3.3% (  6.2)         konqueror : hrtimer_start_range_ns (hrtimer_wakeup)   
   1.7% (  3.3)          knotify4 : hrtimer_start_range_ns (hrtimer_wakeup)   
   1.5% (  2.9)       <interrupt> : i915 at pci:0000:00:02.0                     
   1.2% (  2.3)     <kernel core> : hrtimer_start (tick_sched_timer)          
   1.1% (  2.0)            mysqld : hrtimer_start_range_ns (hrtimer_wakeup)   
   1.0% (  1.9)            plasma : hrtimer_start_range_ns (hrtimer_wakeup)   
   0.6% (  1.2)              kwin : hrtimer_start_range_ns (hrtimer_wakeup)   
   0.5% (  1.0)           apache2 : hrtimer_start_range_ns (hrtimer_wakeup)   
   0.5% (  1.0)           klipper : hrtimer_start_range_ns (hrtimer_wakeup)   
   0.5% (  0.9)       <interrupt> : ahci                                      
   0.4% (  0.8)              Xorg : hrtimer_start (it_real_fn)                
   0.4% (  0.7)              Xorg : queue_delayed_work (delayed_work_timer_fn) 
   0.3% (  0.6)     <kernel core> : add_timer (neigh_periodic_timer)           
   0.2% (  0.3)    NetworkManager : hrtimer_start_range_ns (hrtimer_wakeup)    
   0.1% (  0.3)             kded4 : hrtimer_start_range_ns (hrtimer_wakeup)    
   0.1% (  0.3)           pdflush : queue_delayed_work (delayed_work_timer_fn) 
   0.1% (  0.2)   guidance-power- : hrtimer_start_range_ns (hrtimer_wakeup)    
   0.1% (  0.2)           krunner : hrtimer_start_range_ns (hrtimer_wakeup)    
   0.1% (  0.2)              phy0 : ieee80211_authenticate (ieee80211_sta_timer) 
   0.1% (  0.1)           konsole : hrtimer_start_range_ns (hrtimer_wakeup)      
   0.1% (  0.1)              Xorg : hrtimer_start_range_ns (hrtimer_wakeup)      
   0.1% (  0.1)     <kernel core> : inet_twsk_schedule (inet_twdr_hangman)       
   0.1% (  0.1)   <kernel module> : add_timer (sta_info_cleanup)                 
   0.1% (  0.1)          kio_http : sk_reset_timer (tcp_write_timer)             
   0.0% (  0.1)      <kernel IPI> : TLB shootdowns                               
   0.0% (  0.1)        pulseaudio : hrtimer_start_range_ns (hrtimer_wakeup)      
   0.0% (  0.1)          gconfd-2 : hrtimer_start_range_ns (hrtimer_wakeup)      
   0.0% (  0.1)     <kernel core> : page_writeback_init (wb_timer_fn)            
   0.0% (  0.1)     <kernel core> : start_rt_bandwidth (sched_rt_period_timer)
   0.0% (  0.1)         ssh-agent : hrtimer_start_range_ns (hrtimer_wakeup)
   0.0% (  0.1)        irqbalance : hrtimer_start_range_ns (hrtimer_wakeup)
   0.0% (  0.1)     <kernel core> : laptop_io_completion (laptop_timer_fn)
   0.0% (  0.1)            python : hrtimer_start_range_ns (hrtimer_wakeup)
   0.0% (  0.1)             cupsd : ep_poll (process_timeout)

Recent USB suspend statistics
Active  Device name
  0.0%  USB device usb8 : UHCI Host Controller (Linux 2.6.30-020630rc4-generic uhci_hcd)
  0.0%  USB device usb7 : UHCI Host Controller (Linux 2.6.30-020630rc4-generic uhci_hcd)
  0.0%  USB device usb6 : UHCI Host Controller (Linux 2.6.30-020630rc4-generic uhci_hcd)
  0.0%  USB device usb5 : UHCI Host Controller (Linux 2.6.30-020630rc4-generic uhci_hcd)
  0.0%  USB device usb4 : UHCI Host Controller (Linux 2.6.30-020630rc4-generic uhci_hcd)
  0.0%  USB device usb3 : UHCI Host Controller (Linux 2.6.30-020630rc4-generic uhci_hcd)
  0.0%  USB device usb2 : EHCI Host Controller (Linux 2.6.30-020630rc4-generic ehci_hcd)
  0.0%  USB device usb1 : EHCI Host Controller (Linux 2.6.30-020630rc4-generic ehci_hcd)


root at portland:~# lspci -vvv
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
        Subsystem: Lenovo Device 20e0                                                        
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx- 
        Latency: 0                                                                                           
        Capabilities: [e0] Vendor Specific Information <?>                                                   
        Kernel driver in use: agpgart-intel                                                                  
        Kernel modules: intel-agp                                                                            

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
        Subsystem: Lenovo Device 20e4                                                                               
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+       
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-        
        Latency: 0                                                                                                  
        Interrupt: pin A routed to IRQ 29                                                                           
        Region 0: Memory at f2000000 (64-bit, non-prefetchable) [size=4M]                                           
        Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]                                             
        Region 4: I/O ports at 1800 [size=8]                                                                        
        Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+                             
                Address: fee0100c  Data: 41b1                                                                       
        Capabilities: [d0] Power Management version 3                                                               
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)                          
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                         

00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
        Subsystem: Lenovo Device 20e4                                                                        
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 
        Latency: 0                                                                                           
        Region 0: Memory at f2400000 (64-bit, non-prefetchable) [size=1M]                                    
        Capabilities: [d0] Power Management version 3                                                        
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)                   
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                  

00:03.0 Communication controller: Intel Corporation Mobile 4 Series Chipset MEI Controller (rev 07)
        Subsystem: Lenovo Device 20e6                                                              
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+ 
        Latency: 0                                                                                           
        Interrupt: pin A routed to IRQ 11                                                                    
        Region 0: Memory at f2826800 (64-bit, non-prefetchable) [size=16]                                    
        Capabilities: [50] Power Management version 3                                                        
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)                   
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                  
        Capabilities: [8c] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-                      
                Address: 0000000000000000  Data: 0000                                                        

00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network Connection (rev 03)
        Subsystem: Lenovo Device 20ee                                                     
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 
        Latency: 0                                                                                           
        Interrupt: pin A routed to IRQ 27                                                                    
        Region 0: Memory at f2600000 (32-bit, non-prefetchable) [size=128K]                                  
        Region 1: Memory at f2625000 (32-bit, non-prefetchable) [size=4K]                                    
        Region 2: I/O ports at 1840 [size=32]                                                                
        Capabilities: [c8] Power Management version 2                                                        
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)                   
                Status: D0 PME-Enable- DSel=0 DScale=1 PME-                                                  
        Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+                      
                Address: 00000000fee0100c  Data: 41c1                                                        
        Capabilities: [e0] PCIe advanced features <?>                                                        
        Kernel driver in use: e1000e                                                                         
        Kernel modules: e1000e                                                                               

00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
        Subsystem: Lenovo Device 20f0                                                         
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin A routed to IRQ 20                                                                     
        Region 4: I/O ports at 1860 [size=32]                                                                 
        Capabilities: [50] PCIe advanced features <?>                                                         
        Kernel driver in use: uhci_hcd                                                                        

00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
        Subsystem: Lenovo Device 20f0                                                         
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin B routed to IRQ 21                                                                     
        Region 4: I/O ports at 1880 [size=32]                                                                 
        Capabilities: [50] PCIe advanced features <?>                                                         
        Kernel driver in use: uhci_hcd                                                                        

00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
        Subsystem: Lenovo Device 20f0                                                         
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin C routed to IRQ 22                                                                     
        Region 4: I/O ports at 18a0 [size=32]                                                                 
        Capabilities: [50] PCIe advanced features <?>                                                         
        Kernel driver in use: uhci_hcd                                                                        

00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03) (prog-if 20)
        Subsystem: Lenovo Device 20f1                                                                       
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin D routed to IRQ 23                                                                     
        Region 0: Memory at f2826c00 (32-bit, non-prefetchable) [size=1K]                                     
        Capabilities: [50] Power Management version 2                                                         
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)                  
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                   
        Capabilities: [58] Debug port: BAR=1 offset=00a0                                                      
        Capabilities: [98] PCIe advanced features <?>                                                         
        Kernel driver in use: ehci_hcd                                                                        

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
        Subsystem: Lenovo Device 20f2                                                    
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 
        Latency: 0, Cache Line Size: 64 bytes                                                                
        Interrupt: pin B routed to IRQ 17                                                                    
        Region 0: Memory at f2620000 (64-bit, non-prefetchable) [size=16K]                                   
        Capabilities: [50] Power Management version 2                                                        
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)                  
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                  
        Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-                      
                Address: 0000000000000000  Data: 0000                                                        
        Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00                             
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us                        
                        ExtTag- RBE- FLReset+                                                                
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-                           
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+                                         
                        MaxPayload 128 bytes, MaxReadReq 128 bytes                                           
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-                          
                LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us            
                        ClockPM- Suprise- LLActRep- BwNot-                                                   
                LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-                                           
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-                                       
                LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-           
        Capabilities: [100] Virtual Channel <?>                                                              
        Capabilities: [130] Root Complex Link <?>                                                            
        Kernel driver in use: HDA Intel                                                                      
        Kernel modules: snd-hda-intel                                                                        

00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 
        Latency: 0, Cache Line Size: 64 bytes                                                                
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0                                         
        I/O behind bridge: 0000f000-00000fff                                                                 
        Memory behind bridge: fff00000-000fffff                                                              
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff                                 
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-       
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-                                        
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-                                          
        Capabilities: [40] Express (v1) Root Port (Slot+), MSI 00                                            
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us                        
                        ExtTag- RBE+ FLReset-                                                                
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-                           
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-                                         
                        MaxPayload 128 bytes, MaxReadReq 128 bytes                                           
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-                          
                LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <1us, L1 <4us              
                        ClockPM- Suprise- LLActRep+ BwNot-                                                   
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-                              
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-                                       
                LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-           
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surpise+                            
                        Slot #  0, PowerLimit 6.500000; Interlock- NoCompl-                                  
                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt+ HPIrq+ LinkChg-                      
                        Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-                          
                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- Interlock-                         
                        Changed: MRL- PresDet- LinkState-                                                    
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-                      
                RootCap: CRSVisible-                                                                         
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-                                              
        Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+                      
                Address: fee0300c  Data: 4159                                                                
        Capabilities: [90] Subsystem: Lenovo Device 20f3                                                     
        Capabilities: [a0] Power Management version 2                                                        
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)                   
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                  
        Capabilities: [100] Virtual Channel <?>                                                              
        Capabilities: [180] Root Complex Link <?>                                                            
        Kernel driver in use: pcieport-driver                                                                
        Kernel modules: shpchp                                                                               

00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 
        Latency: 0, Cache Line Size: 64 bytes                                                                
        Bus: primary=00, secondary=03, subordinate=03, sec-latency=0                                         
        I/O behind bridge: 0000f000-00000fff                                                                 
        Memory behind bridge: f2500000-f25fffff                                                              
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff                                 
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-       
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-                                        
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-                                          
        Capabilities: [40] Express (v1) Root Port (Slot+), MSI 00                                            
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us                        
                        ExtTag- RBE+ FLReset-                                                                
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-                           
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-                                         
                        MaxPayload 128 bytes, MaxReadReq 128 bytes                                           
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-                          
                LnkCap: Port #2, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <256ns, L1 <4us            
                        ClockPM- Suprise- LLActRep+ BwNot-                                                   
                LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+                            
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-                                       
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt- ABWMgmt-           
                SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surpise+                            
                        Slot #  1, PowerLimit 6.500000; Interlock- NoCompl-                                  
                SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt+ HPIrq+ LinkChg-                      
                        Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-                          
                SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-                         
                        Changed: MRL- PresDet- LinkState+                                                    
                RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-                      
                RootCap: CRSVisible-                                                                         
                RootSta: PME ReqID 0000, PMEStatus- PMEPending-                                              
        Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+                      
                Address: fee0300c  Data: 4161                                                                
        Capabilities: [90] Subsystem: Lenovo Device 20f3                                                     
        Capabilities: [a0] Power Management version 2                                                        
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)                   
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                  
        Capabilities: [100] Virtual Channel <?>                                                              
        Capabilities: [180] Root Complex Link <?>                                                            
        Kernel driver in use: pcieport-driver                                                                
        Kernel modules: shpchp                                                                               

00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
        Subsystem: Lenovo Device 20f0                                                         
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin A routed to IRQ 16                                                                     
        Region 4: I/O ports at 18c0 [size=32]                                                                 
        Capabilities: [50] PCIe advanced features <?>                                                         
        Kernel driver in use: uhci_hcd                                                                        

00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
        Subsystem: Lenovo Device 20f0                                                         
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin B routed to IRQ 17                                                                     
        Region 4: I/O ports at 18e0 [size=32]                                                                 
        Capabilities: [50] PCIe advanced features <?>                                                         
        Kernel driver in use: uhci_hcd                                                                        

00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
        Subsystem: Lenovo Device 20f0                                                         
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin C routed to IRQ 18                                                                     
        Region 4: I/O ports at 1c00 [size=32]                                                                 
        Capabilities: [50] PCIe advanced features <?>                                                         
        Kernel driver in use: uhci_hcd                                                                        

00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03) (prog-if 20)
        Subsystem: Lenovo Device 20f1                                                                       
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin D routed to IRQ 19                                                                     
        Region 0: Memory at f2827000 (32-bit, non-prefetchable) [size=1K]                                     
        Capabilities: [50] Power Management version 2                                                         
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)                  
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                   
        Capabilities: [58] Debug port: BAR=1 offset=00a0                                                      
        Capabilities: [98] PCIe advanced features <?>                                                         
        Kernel driver in use: ehci_hcd                                                                        

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93) (prog-if 01)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 
        Latency: 0                                                                                           
        Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0                                         
        I/O behind bridge: 0000f000-00000fff                                                                 
        Memory behind bridge: fff00000-000fffff                                                              
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff                                 
        Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-     
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-                                        
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-                                          
        Capabilities: [50] Subsystem: Lenovo Device 20f4                                                     

00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev 03)
        Subsystem: Lenovo Device 20f5                                          
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Capabilities: [e0] Vendor Specific Information <?>                                                    
        Kernel modules: iTCO_wdt                                                                              

00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev 03) (prog-if 01)
        Subsystem: Lenovo Device 20f8                                                          
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0                                                                                            
        Interrupt: pin B routed to IRQ 26                                                                     
        Region 0: I/O ports at 1c48 [size=8]                                                                  
        Region 1: I/O ports at 183c [size=4]                                                                  
        Region 2: I/O ports at 1c40 [size=8]                                                                  
        Region 3: I/O ports at 1838 [size=4]                                                                  
        Region 4: I/O ports at 1c20 [size=32]                                                                 
        Region 5: Memory at f2826000 (32-bit, non-prefetchable) [size=2K]                                     
        Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/4 Enable+                       
                Address: fee0300c  Data: 4171                                                                 
        Capabilities: [70] Power Management version 3                                                         
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)                    
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-                                                   
        Capabilities: [a8] SATA HBA <?>                                                                       
        Capabilities: [b0] PCIe advanced features <?>                                                         
        Kernel driver in use: ahci                                                                            

00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
        Subsystem: Lenovo Device 20f9                                          
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 11                                                                     
        Region 0: Memory at f2827400 (64-bit, non-prefetchable) [size=256]                                    
        Region 4: I/O ports at 1c60 [size=32]                                                                 
        Kernel modules: i2c-i801                                                                              

03:00.0 Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection
        Subsystem: Intel Corporation Device 1211                                               
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 28
        Region 0: Memory at f2500000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [c8] Power Management version 3
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
                Address: 00000000fee0300c  Data: 41a9
        Capabilities: [e0] Express (v1) Endpoint, MSI 00
                DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 unlimited
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <128ns, L1 <32us
                        ClockPM+ Suprise- LLActRep- BwNot-
                LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
                        ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
        Capabilities: [100] Advanced Error Reporting <?>
        Capabilities: [140] Device Serial Number 26-94-a9-ff-ff-5d-21-00
        Kernel driver in use: iwlagn
        Kernel modules: iwlagn

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

-- 
wakeups  <kernel core> : hrtimer_start_range_ns (tick_sched_timer) 
https://bugs.launchpad.net/bugs/373245
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