From: Tomi Sarvela <tomi.p.sarvela@intel.com>
To: Lukas Wunner <lukas@wunner.de>
Cc: intel-gfx@lists.freedesktop.org, daniel.vetter@ffwll.ch
Subject: Re: [REGRESSION] system hang on ILK/SNB/IVB
Date: Fri, 01 Apr 2016 10:59:38 +0300 [thread overview]
Message-ID: <1664452.4OBE3CWHBR@fractal> (raw)
In-Reply-To: <20160331203517.GA547@wunner.de>
Hi Lukas,
Ran this patch through the farm, and it seems that this patch might've helped
HSW, maybe even BSW.
ILK, IVB and SNB are still hanging hard to the same igt-test,
kms_pipe_crc_basic@suspend-read-crc-pipe-?
I'll try to make a kernel with the changes you proposed, but as I'm not
familiar with the driver innards, it might take a while.
Tomi
On Thursday 31 March 2016 22:35:17 Lukas Wunner wrote:
> Hi Tomi,
>
> On Thu, Mar 31, 2016 at 10:21:16AM +0300, Tomi Sarvela wrote:
> > The problem with the results in your link is that there is no HSW, ILK,
> > IVB
> > or SNB results. This might give the impression that everything is well.
> >
> > Most damning is lack of HSW-gt2 and SNB-dellxps: those machines hang on to
> > APC, and have run quite stably for every Patchwork run. The case isn't
> > strong enough yet that series should fail if either of those won't run,
> > but it might be so in future.
>
> So my patch seeking to fix the hangs has passed Romania CI with "success":
> https://patchwork.freedesktop.org/series/5125/
>
> However I don't see HSW-gt2 and SNB-dellxps in their hardware lineup.
> And I would still like to know what the actual cause of the hangs is
> since they do not occur on my IVB laptop.
>
> If you get the chance maybe you can repeat the test and include a
> "dump_stack();" at the beginning of intel_fbdev_output_poll_changed()
> and intel_fbdev_restore_mode(). This should show in the logs which of
> the two functions is called during suspend/resume and from where it's
> called. My guess is that this particular hardware causes a hotplug
> signal to be generated upon waking up. If the hangs do not stop with
> this patch, booting with "no_console_suspend" should at least show
> what's going on.
>
> Thank you & best regards,
>
> Lukas
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next prev parent reply other threads:[~2016-04-01 7:59 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-30 17:20 [REGRESSION] system hang on ILK/SNB/IVB Gabriel Feceoru
2016-03-30 17:57 ` [PATCH] drm/i915: Protect fbdev across slow or failed initialisation Chris Wilson
2016-03-30 18:10 ` kbuild test robot
2016-03-30 18:10 ` kbuild test robot
2016-03-30 18:26 ` kbuild test robot
2016-03-30 18:30 ` Chris Wilson
2016-03-30 18:56 ` [PATCH v3] " Chris Wilson
2016-03-31 12:00 ` Gabriel Feceoru
2016-03-31 13:57 ` [PATCH v4 1/2] " Chris Wilson
2016-03-31 13:57 ` [PATCH v4 2/2] drm/i915: Move fbdev_suspend_work to intel_fbdev Chris Wilson
2016-03-31 15:22 ` Joonas Lahtinen
2016-03-31 15:30 ` Chris Wilson
2016-03-31 15:56 ` Joonas Lahtinen
2016-03-31 16:05 ` [PATCH v4 1/2] drm/i915: Protect fbdev across slow or failed initialisation Joonas Lahtinen
2016-03-31 16:13 ` Chris Wilson
2016-03-31 16:28 ` Joonas Lahtinen
2016-03-31 16:30 ` Lukas Wunner
2016-03-30 18:47 ` [REGRESSION] system hang on ILK/SNB/IVB Daniel Vetter
2016-03-30 21:35 ` Lukas Wunner
2016-03-31 7:21 ` Tomi Sarvela
2016-03-31 20:35 ` Lukas Wunner
2016-04-01 7:59 ` Tomi Sarvela [this message]
2016-03-31 7:42 ` Gabriel Feceoru
2016-03-31 15:23 ` Lukas Wunner
2016-03-31 14:42 ` ✗ Fi.CI.BAT: failure for drm/i915: Protect fbdev across slow or failed initialisation (rev2) Patchwork
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