[Bug 793972] Re: interrupt IRQ shared while plenty free

[Phillip Susi]

This doesn't really have anything to do with acpid, so reassigning to
the kernel.  I am pretty sure that the kernel just uses the mapping set
up by the bios and you can't change it.  It is also perfectly ok for
multiple devices to share an IRQ, so is this actually causing a problem
for you?


** Package changed: acpid (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to acpid in Ubuntu.
https://bugs.launchpad.net/bugs/793972

Title:
  interrupt IRQ shared while plenty free

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: acpid

  During boot, ACPI shares interrupts, even though there are plenty numbers free.
  After this, network connections (I have a USB network adapter) and keyboard spuriously hang.
  Someway, interrupt 16 and 19 are also a favorite of the sound system, causing additional overloading of there IRQs.

  Neither the ACPI nor the ALSA documentation give a handle on how to manyally set IRQs.
  My BIOS does not have a menu to manually assign IRQs.

  
  cat /proc/interrupts
             CPU0       CPU1       CPU2       CPU3       
    0:         45          0          0         11   IO-APIC-edge      timer
    1:          0          0          0          2   IO-APIC-edge      i8042
    7:          1          0          0          0   IO-APIC-edge    
    8:          0          0          0          1   IO-APIC-edge      rtc0
    9:          0          0          0          0   IO-APIC-fasteoi   acpi
   12:          0          0          0          4   IO-APIC-edge      i8042
   16:          0          0      26803       1066   IO-APIC-fasteoi   ohci_hcd:usb3, ohci_hcd:usb4, HDA Intel
   17:          0          0          1        942   IO-APIC-fasteoi   ehci_hcd:usb1
   18:          0          0          0          2   IO-APIC-fasteoi   ohci_hcd:usb5, ohci_hcd:usb6
   19:          0     204243         53       5838   IO-APIC-fasteoi   ehci_hcd:usb2, HDA Intel
   22:      54768          0         15       3544   IO-APIC-fasteoi   ahci
   26:          0          0          0          0   PCI-MSI-edge      eth0
   27:          0          0          0         13   PCI-MSI-edge      fglrx[0]@PCI:1:0:0
  NMI:          0          0          0          0   Non-maskable interrupts
  LOC:     558631     399411     622830     639830   Local timer interrupts
  SPU:          0          0          0          0   Spurious interrupts
  PMI:          0          0          0          0   Performance monitoring interrupts
  PND:          0          0          0          0   Performance pending work
  RES:     397511     319872      86301      62273   Rescheduling interrupts
  CAL:        151        215        258        261   Function call interrupts
  TLB:       1558       1741       2366       1775   TLB shootdowns
  TRM:          0          0          0          0   Thermal event interrupts
  THR:          0          0          0          0   Threshold APIC interrupts
  MCE:          0          0          0          0   Machine check exceptions
  MCP:         11         11         11         11   Machine check polls
  ERR:          1
  MIS:          0

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: acpid 1.0.10-5ubuntu2.1
  ProcVersionSignature: Ubuntu 2.6.32-32.62-generic-pae 2.6.32.38+drm33.16
  Uname: Linux 2.6.32-32-generic-pae i686
  NonfreeKernelModules: fglrx
  Architecture: i386
  Date: Tue Jun  7 13:14:48 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1)
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: acpid

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/793972/+subscriptions