linux-kernel - Re: Kernel stability on baytrail machines

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Message-ID: <20160713104802.GA18296@atrey.karlin.mff.cuni.cz>
Date:	Wed, 13 Jul 2016 12:48:03 +0200
From:	Pavel Machek <pavel@....cz>
To:	Michal Feix <michal@...x.cz>
Cc:	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org
Subject: Re: Kernel stability on baytrail machines

> On Tue 2016-07-12 16:41:58, Ezequiel Garcia wrote:
> >>Hi Alan,
> >>
> >>(Adding interested people to this thread)
> >>
> >>On 09 Apr 08:14 PM, One Thousand Gnomes wrote:
> >>>>>I do feel that the importance of the mentioned bug is currently
> >>>>>underestimated. Can anyone here give a note, how much current linux
> >>>>>kernel is supposed to be stable on general baytrail machines?
> >>>>If you did not get any replies... you might want to check MAINTAINERS file, and
> >>>>put Intel x86 maintainers on Cc list.
> >>>>
> >>>>I'm sure someone cares :-).
> >>>Yes we care, and there are people looking at the various reports.
> >>>
> >>Are there any updates on the status of this issue?
> >>
> >>The current bugzilla report [1] marks this as a power management
> >>issue. However, many reports indicate that it would only freeze
> >>when running X, so it's not completely clear if it's related to
> >>the gfx driver too.
> >Does
> >
> >"intel_idle.max_cstate=1"
> >
> >fix it for you?
> Yes, it does.
> >If you feel it is X-only problem, you may want to provide details
> >about your graphics subsystem (DRM enabled? framebuffer only?) and
> >probably cc.
> It's not X-only problem. Happens even in console mode, which is KMS
> switched during boot though.
> >...actually... you may want to verify if it happens in unaccelerated X.
> As it happens even in console mode, is this relevant test?

No, no need to test with X.

Would it be possible to test in good old VGA mode?

									Pavel
-- 
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