Re: [BISECTED REGRESSION in 3.19-rc1] [drm/i915] WARNING: drivers/gpu/drm/drm_irq.c:1077 drm_wait_one_vblank

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On Wed, Feb 04, 2015 at 01:32:14PM +0100, Paul Bolle wrote:
> Andrey Skvortsov schreef op zo 01-02-2015 om 00:16 [+0300]:
> > this warning exist in v3.19-rc6 and does not in v3.18. Bisection
> > points to the commit 51e31d49c890552 "drm/i915: Use generic vblank wait".
> > I have two machines with integrated Intel graphics and the problem
> > happens only on the old one with  GM965 chipset and X3100 integrated graphics.
> 
> I see this too, since v3.19-rc1, on an (outdated) ThinkPad X41.
> 
> > backtrace information:
> > 
> > [   31.780813] WARNING: CPU: 0 PID: 718 at drivers/gpu/drm/drm_irq.c:1077 drm_wait_one_vblank+0x33/0x141 [drm]()
> 
> But it also prints
>     vblank not available on crtc 0, ret=-22
> 
> after the WARNING line, on that machine.

I have "vblank not available on crtc 1, ret=-22" there.


> > [   31.780862]  thermal_sys(E)
> > [   31.780866] CPU: 0 PID: 718 Comm: kworker/u4:3 Tainted: G            E  3.17.0-rc5-150116--00578-g51e31d4 #16
> > [   31.780868] Hardware name: Dell Inc. Vostro 1500                     /0NX907, BIOS A06 04/21/2008
> > [   31.780873] Workqueue: events_unbound async_run_entry_fn
> > [   31.780875]  0000000000000000 ffffffffa0544b9d ffffffff813d4e81 0000000000000000
> > [   31.780879]  ffffffff8103dec3 ffff8800d84e0068 ffffffffa0521c73 0000000000070008
> > [   31.780882]  ffff8800d84e0000 ffff8801973e0800 0000000000000000 0000000000006014
> > [   31.780886] Call Trace:
> > [   31.780890]  [<ffffffff813d4e81>] ? dump_stack+0x4a/0x75
> > [   31.780894]  [<ffffffff8103dec3>] ? warn_slowpath_common+0x7e/0x97
> > [   31.781050]  [<ffffffffa0521c73>] ? drm_wait_one_vblank+0x33/0x141 [drm]
> > [   31.781078]  [<ffffffffa0521c73>] ? drm_wait_one_vblank+0x33/0x141 [drm]
> > [   31.781122]  [<ffffffffa096b13e>] ? intel_enable_tv+0x22/0x58 [i915]
> > [   31.781153]  [<ffffffffa0940f3e>] ? i9xx_crtc_enable+0x33b/0x397 [i915]
> > [   31.781184]  [<ffffffffa093f875>] ? __intel_set_mode+0x1160/0x1209 [i915]
> > [   31.781216]  [<ffffffffa094590a>] ? intel_set_mode+0x12/0x2c [i915]
> > [   31.781247]  [<ffffffffa0945d5a>] ? intel_get_load_detect_pipe+0x367/0x408 [i915]
> > [   31.781281]  [<ffffffffa096bbc6>] ? intel_tv_detect+0x103/0x444 [i915]
> > [   31.781289]  [<ffffffffa0729ee3>] ? drm_helper_probe_single_connector_modes_merge_bits+0xc0/0x327 [drm_kms_helper]
> > [   31.781296]  [<ffffffffa072e946>] ? drm_fb_helper_probe_connector_modes+0x3d/0x51 [drm_kms_helper]
> > [   31.781303]  [<ffffffffa0730026>] ? drm_fb_helper_initial_config+0x3d/0x303 [drm_kms_helper]
> > [   31.781306]  [<ffffffff81055f62>] ? async_run_entry_fn+0x5a/0x110
> > [   31.781310]  [<ffffffff8105019d>] ? process_one_work+0x194/0x292
> > [   31.781313]  [<ffffffff810504fb>] ? worker_thread+0x236/0x298
> > [   31.781316]  [<ffffffff810502c5>] ? process_scheduled_works+0x2a/0x2a
> > [   31.781319]  [<ffffffff8105401e>] ? kthread+0x9e/0xa6
> > [   31.781322]  [<ffffffff81053f80>] ? kthread_freezable_should_stop+0x36/0x36
> > [   31.781326]  [<ffffffff813d9aac>] ? ret_from_fork+0x7c/0xb0
> > [   31.781329]  [<ffffffff81053f80>] ? kthread_freezable_should_stop+0x36/0x36
> > [   31.782726] ---[ end trace e2b78017f1a10054 ]---
> > 

-- 
Best regards,
Andrey Skvortsov

PGP Key ID: 0x57A3AEAD

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