[Bug 91891] [gm45] after boot time display swicth off and on one time

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=91891

--- Comment #7 from Jani Nikula <jani.nikula at intel.com> ---
Feb 12 09:54:53  kernel: [   21.980050] WARNING: CPU: 1 PID: 2825 at
drivers/gpu/drm/i915/intel_display.c:901 intel_tv_detect+0x260/0x5b0()
Feb 12 09:54:53  kernel: [   21.980053] vblank wait on pipe B timed out
Feb 12 09:54:53  kernel: [   21.980055] Modules linked in: cpufreq_stats
iptable_filter ip_tables binfmt_misc uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_core sd_mod
Feb 12 09:54:53  kernel: [   21.980072] CPU: 1 PID: 2825 Comm: Xorg Not tainted
3.18.1-0.6 #9
Feb 12 09:54:53  kernel: [   21.980075] Hardware name: SAMSUNG ELECTRONICS CO.,
LTD. X120/X170/X171             /X120/X170/X171             , BIOS
08CX.M010.20100408.KSY 04/08/2010
Feb 12 09:54:53  kernel: [   21.980078]  0000000000000000 0000000000000009
ffffffff817d2ae3 ffff8800b918fad8
Feb 12 09:54:53  kernel: [   21.980083]  ffffffff81049866 ffff8800b9313000
ffff8800b9360000 ffff8800b93df800
Feb 12 09:54:53  kernel: [   21.980087]  00000000c00c00d0 0000000030000000
ffffffff81049945 ffffffff81a272a8
Feb 12 09:54:53  kernel: [   21.980092] Call Trace:
Feb 12 09:54:53  kernel: [   21.980100]  [<ffffffff817d2ae3>] ?
dump_stack+0x41/0x51
Feb 12 09:54:53  kernel: [   21.980107]  [<ffffffff81049866>] ?
warn_slowpath_common+0x86/0xb0
Feb 12 09:54:53  kernel: [   21.980112]  [<ffffffff81049945>] ?
warn_slowpath_fmt+0x45/0x50
Feb 12 09:54:53  kernel: [   21.980118]  [<ffffffff8143483e>] ?
intel_wait_for_vblank+0x19e/0x1f0
Feb 12 09:54:53  kernel: [   21.980122]  [<ffffffff814706a0>] ?
intel_tv_detect+0x260/0x5b0
Feb 12 09:54:53  kernel: [   21.980129]  [<ffffffff813b330a>] ?
drm_helper_probe_single_connector_modes_merge_bits+0x2fa/0x3f0
Feb 12 09:54:53  kernel: [   21.980135]  [<ffffffff813ce205>] ?
drm_mode_getconnector+0x3b5/0x430
Feb 12 09:54:53  kernel: [   21.980141]  [<ffffffff813c0b24>] ?
drm_ioctl+0x1c4/0x5d0
Feb 12 09:54:53  kernel: [   21.980145]  [<ffffffff813cde50>] ?
drm_mode_getcrtc+0xe0/0xe0
Feb 12 09:54:53  kernel: [   21.980151]  [<ffffffff811645ee>] ?
do_vfs_ioctl+0x7e/0x500
Feb 12 09:54:53  kernel: [   21.980156]  [<ffffffff810020ef>] ?
restore_sigcontext+0x13f/0x150
Feb 12 09:54:53  kernel: [   21.980161]  [<ffffffff81057d20>] ?
restore_altstack+0x10/0x30
Feb 12 09:54:53  kernel: [   21.980165]  [<ffffffff81164b09>] ?
SyS_ioctl+0x99/0xb0
Feb 12 09:54:53  kernel: [   21.980170]  [<ffffffff817db299>] ?
stub_rt_sigreturn+0x69/0xa0
Feb 12 09:54:53  kernel: [   21.980175]  [<ffffffff817dac96>] ?
system_call_fastpath+0x16/0x1b

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