linux-kernel - Re: 5.13-rc6 on thinkpad X220: graphics hangs with recent mainline

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Message-ID: <20210818064708.GB22282@amd>
Date:   Wed, 18 Aug 2021 08:47:08 +0200
From:   Pavel Machek <pavel@....cz>
To:     Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Cc:     intel-gfx@...ts.freedesktop.org, jani.nikula@...ux.intel.com,
        kernel list <linux-kernel@...r.kernel.org>,
        rodrigo.vivi@...el.com
Subject: Re: 5.13-rc6 on thinkpad X220: graphics hangs with recent mainline

Hi!
> > I'm getting graphics problems with 5.13-rc:
> > 
> > Debian 10.9, X, chromium and flightgear is in use. Things were more
> > stable than this with previous kernels.
> > 
> > Any ideas?
> 
> The error you are seeing:
> 
> > [185300.784992] i915 0000:00:02.0: [drm] Resetting chip for stopped heartbeat on rcs0
> > [185300.888694] i915 0000:00:02.0: [drm] fgfs[27370] context reset due to GPU hang
> 
> That just indicates that the rendering took too long. It could be caused
> by a change in how the application renders, userspace driver or i915. So
> a previously on-the-edge-of-timeout operation may have got pushed beyond
> the timeout, or the rendering genuinely got completely stuck.
> 
> If you only updated the kernel, not the application or userspace, could
> you bisect the commit that introduced the behavior and report:
> 
> https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs
> 
> We have changes around this area, so would be helpful if you can bisect
> the commit that started the behavior.

So with more recent kernels, problem went away. Is it possible it was
one of those "aborted fence aborts both application and X" problems?

Best regards,
								Pavel
-- 
http://www.livejournal.com/~pavelmachek

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