[Bug 627275] [NEW] Suspend to RAM broken with 2.6.35 kernels on T500

[ReneS]

Public bug reported:

I tried the latest Maverick 2.6.35 kernels for regression testing on my
Lenovo Thinkpad T500 with Ubuntu 9.10. All kernels including 2.6.35.4
show a suspend to RAM problem. The system simply freezes when
suspending. Screen is still on, disk off, cpu fan off, but the moon
still flashes. There is no way out besides a hard power down.

I attached to suspend logs from a success with 2.6.35.4 and a failure
with 2.6.35.4. Suspend seems to work fine one or two times, but when
doing it for the third time, the machines freezes.

No other log contains any information because some of the suspend
information seems to be written after waking the machine up and
therefore do not make it into the log when a hard restart is necessary.

This is from the kernel log, when the machine suspends correctly (but
writes some of the log after waking up).

Aug 30 18:23:28 linpicard kernel: [ 8717.973146] PM: Syncing filesystems ... done.
Aug 30 18:23:28 linpicard kernel: [ 8717.997241] PM: Preparing system for mem sleep
Aug 30 20:52:43 linpicard kernel: [ 8719.061031] Freezing user space processes ... (elapsed 0.02 seconds) done.
Aug 30 20:52:43 linpicard kernel: [ 8719.090077] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
Aug 30 20:52:43 linpicard kernel: [ 8719.110057] PM: Entering mem sleep
Aug 30 20:52:43 linpicard kernel: [ 8719.110121] Suspending console(s) (use no_console_suspend to debug)
Aug 30 20:52:43 linpicard kernel: [ 8719.262302] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
Aug 30 20:52:43 linpicard kernel: [ 8719.262511] sd 0:0:0:0: [sda] Synchronizing SCSI cache
Aug 30 20:52:43 linpicard kernel: [ 8719.263019] sd 0:0:0:0: [sda] Stopping disk
Aug 30 20:52:43 linpicard kernel: [ 8719.270256] sd 1:0:0:0: [sdb] Stopping disk
Aug 30 20:52:43 linpicard kernel: [ 8719.313497] ACPI handle has no context!
Aug 30 20:52:43 linpicard kernel: [ 8719.313505] sdhci-pci 0000:15:00.2: PCI INT C disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.313511] ACPI handle has no context!
Aug 30 20:52:43 linpicard kernel: [ 8719.318576] ACPI handle has no context!
Aug 30 20:52:43 linpicard kernel: [ 8719.318665] uhci_hcd 0000:00:1d.2: PCI INT C disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.318690] uhci_hcd 0000:00:1d.1: PCI INT B disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.318716] uhci_hcd 0000:00:1d.0: PCI INT A disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.318719] pciehp 0000:00:1c.4:pcie04: pciehp_suspend ENTRY
Aug 30 20:52:43 linpicard kernel: [ 8719.318723] pciehp 0000:00:1c.3:pcie04: pciehp_suspend ENTRY
Aug 30 20:52:43 linpicard kernel: [ 8719.318726] pciehp 0000:00:1c.2:pcie04: pciehp_suspend ENTRY
Aug 30 20:52:43 linpicard kernel: [ 8719.318730] pciehp 0000:00:1c.0:pcie04: pciehp_suspend ENTRY
Aug 30 20:52:43 linpicard kernel: [ 8719.318761] uhci_hcd 0000:00:1a.2: PCI INT C disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.318787] uhci_hcd 0000:00:1a.1: PCI INT B disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.318813] uhci_hcd 0000:00:1a.0: PCI INT A disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.319085] e1000e 0000:00:19.0: PCI INT A disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.319091] e1000e 0000:00:19.0: PME# enabled
Aug 30 20:52:43 linpicard kernel: [ 8719.319098] e1000e 0000:00:19.0: wake-up capability enabled by ACPI
Aug 30 20:52:43 linpicard kernel: [ 8719.330033] ehci_hcd 0000:00:1d.7: PCI INT D disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.330050] ehci_hcd 0000:00:1a.7: PCI INT D disabled
Aug 30 20:52:43 linpicard kernel: [ 8719.330089] pciehp 0000:00:1c.1:pcie04: pciehp_suspend ENTRY
Aug 30 20:52:43 linpicard kernel: [ 8719.330104] i915 0000:00:02.0: power state changed by ACPI to D3
Aug 30 20:52:43 linpicard kernel: [ 8719.420338] HDA Intel 0000:00:1b.0: PCI INT B disabled
Aug 30 20:52:43 linpicard kernel: [ 8720.321272] PM: suspend of devices complete after 1210.730 msecs
Aug 30 20:52:43 linpicard kernel: [ 8720.321274] PM: suspend devices took 1.210 seconds
Aug 30 20:52:43 linpicard kernel: [ 8720.411296] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D3
Aug 30 20:52:43 linpicard kernel: [ 8720.471303] uhci_hcd 0000:00:1d.0: power state changed by ACPI to D3
Aug 30 20:52:43 linpicard kernel: [ 8720.551303] ehci_hcd 0000:00:1a.7: power state changed by ACPI to D3
Aug 30 20:52:43 linpicard kernel: [ 8720.611303] uhci_hcd 0000:00:1a.2: power state changed by ACPI to D3
Aug 30 20:52:43 linpicard kernel: [ 8720.671303] uhci_hcd 0000:00:1a.0: power state changed by ACPI to D3
Aug 30 20:52:43 linpicard kernel: [ 8720.671342] PM: late suspend of devices complete after 350.064 msecs
Aug 30 20:52:43 linpicard kernel: [ 8720.771298] ACPI: Preparing to enter system sleep state S3
Aug 30 20:52:43 linpicard kernel: [ 8721.121324] PM: Saving platform NVS memory
Aug 30 20:52:43 linpicard kernel: [ 8721.133139] Disabling non-boot CPUs ...
Aug 30 20:52:43 linpicard kernel: [ 8721.250032] CPU 1 is now offline

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

-- 
Suspend to RAM broken with 2.6.35 kernels on T500
https://bugs.launchpad.net/bugs/627275
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