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SubjectRe: [Intel-gfx] 5.7-rc0: hangs while attempting to run X
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Quoting Pavel Machek (2020-04-03 10:14:30)
> Hi!
>
> > > > Hardware is thinkpad x220. I had this crash few days ago. And today I
> > > > have similar-looking one, with slightly newer kernel. (Will post
> > > > as a follow-up).
> >
> > As part of quest for working system, I tried 5.7-rc0, based on
> >
> > Merge: 50a5de895dbe b4d8ddf8356d
> > Author: Linus Torvalds <torvalds@linux-foundation.org>
> > Date: Wed Apr 1 18:18:18 2020 -0700
> >
> > It hangs in userspace, at a time when X should be starting, and I'm
> > looking at blinking cursor.
> >
> > 5.6-rcs worked, I'll test 5.6-final.
>
> 5.6-final works.
>
> Hmm...
>
> commit f365ab31efacb70bed1e821f7435626e0b2528a6
> Merge: 4646de87d325 59e7a8cc2dcf
> Author: Linus Torvalds <torvalds@linux-foundation.org>
> Date: Wed Apr 1 15:24:20 2020 -0700
>
> Merge tag 'drm-next-2020-04-01' of git://anongit.freedesktop.org/drm/drm
>
> Let me test 4646de87d32526ee87b46c2e0130413367fb5362...that one works.
>
> Ok, so obviously... I should
> test... f365ab31efacb70bed1e821f7435626e0b2528a6
>
> Now, this is anti-social:
>
> Busywait for request completion limit (ns)
> (DRM_I915_MAX_REQUEST_BUSYWAIT) [8000] (NEW)
>
> How should I know what to answer here (or the others)
>
> Interval between heartbeat pulses (ms) (DRM_I915_HEARTBEAT_INTERVAL) [2500] 2500
> Preempt timeout (ms, jiffy granularity) (DRM_I915_PREEMPT_TIMEOUT) [640] 640
>
> I just took the defaults.. but...

It is _deep_ under EXPERT.
-Chris

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