kernel-packages team mailing list archive

[Alberto Milone <alberto.milone@xxxxxxxxxxxxx>]

Apparently it's the i915 kernel module that fails when the system
suspends (as per the dmesg in nvidia-bug-report.log.gz):

[  347.094378] ------------[ cut here ]------------
[  347.094404] WARNING: CPU: 5 PID: 2858 at /build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_uncore.c:125 gen6_gt_check_fifodbg.isra.9+0x38/0x50 [i915]()
[  347.094404] MMIO read or write has been dropped ffffffff
.....
[  347.094428] CPU: 5 PID: 2858 Comm: kworker/u16:13 Tainted: PF          O 3.13.0-7-generic #25-Ubuntu
[  347.094429] Hardware name: LENOVO 2099/INVALID, BIOS 5DCN89WW(V8.00) 08/23/2012
[  347.094438] Workqueue: i915 gen6_force_wake_work [i915]
[  347.094440]  0000000000000009 ffff88020e8a1d38 ffffffff817095d7 ffff88020e8a1d80
[  347.094442]  ffff88020e8a1d70 ffffffff8106467d ffff8800b709c020 ffff8800b709c028
[  347.094443]  0000000000000246 0000000000000000 0000000000000200 ffff88020e8a1dd0
[  347.094444] Call Trace:
[  347.094448]  [<ffffffff817095d7>] dump_stack+0x45/0x56
[  347.094451]  [<ffffffff8106467d>] warn_slowpath_common+0x7d/0xa0
[  347.094452]  [<ffffffff810646ec>] warn_slowpath_fmt+0x4c/0x50
[  347.094462]  [<ffffffffa0c6dd08>] gen6_gt_check_fifodbg.isra.9+0x38/0x50 [i915]
[  347.094469]  [<ffffffffa0c6ddab>] __gen6_gt_force_wake_mt_put+0x2b/0x30 [i915]
[  347.094477]  [<ffffffffa0c6dad7>] gen6_force_wake_work+0x37/0x50 [i915]
[  347.094479]  [<ffffffff81080872>] process_one_work+0x182/0x450
[  347.094481]  [<ffffffff81081611>] worker_thread+0x121/0x410
[  347.094482]  [<ffffffff810814f0>] ? rescuer_thread+0x3e0/0x3e0
[  347.094484]  [<ffffffff81088262>] kthread+0xd2/0xf0
[  347.094485]  [<ffffffff81088190>] ? kthread_create_on_node+0x190/0x190
[  347.094488]  [<ffffffff81719efc>] ret_from_fork+0x7c/0xb0
[  347.094489]  [<ffffffff81088190>] ? kthread_create_on_node+0x190/0x190
[  347.094490] ---[ end trace c5385131fcc61d31 ]---
[  347.943633] PM: suspend of devices complete after 986.296 msecs
[  347.943778] PM: late suspend of devices complete after 0.143 msecs

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1276674

Title:
  Suspend works flawlessly however resume leads to a checker board
  screen rather that lightdm

Status in “linux” package in Ubuntu:
  New
Status in “nvidia-graphics-drivers-331” package in Ubuntu:
  New

Bug description:
  Upon installing nvidia-331 and nvidia-prime if I suspend the laptop
  everything goes down as expected.  However upon resume I get a
  checkerboard style page rather than the lightdm login page.

  If I disable the nvidia stuff from the optimus box and just have the
  intel gfx running suspend and resume work again.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: nvidia-331 331.38-0ubuntu3
  ProcVersionSignature: Ubuntu 3.13.0-7.25-generic 3.13.1
  Uname: Linux 3.13.0-7-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  Date: Wed Feb  5 15:57:56 2014
  InstallationDate: Installed on 2014-01-10 (26 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140109)
  SourcePackage: nvidia-graphics-drivers-331
  UpgradeStatus: No upgrade log present (probably fresh install)

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