Random ocassional graphics freeze on Intel chipset

Jose R R Jose.r.r at metztli-it.com
Mon Oct 14 09:06:30 PDT 2013

Niltze, all!

Since a while back I've built X on Debian from instructions at <
http://wiki.x.org/wiki/ModularDevelopersGuide/ >

Evidently script builds the Intel driver, which I have rebuilt singly for a
couple of releases.

Below is the pertinent lspci -k line showing the kernel driver I use:

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
Subsystem: Hewlett-Packard Company Device 1658
Kernel driver in use: i915

I have used the Intel driver under both Enlightenment and GNOME
environments with no issues (no hangs even after prolonged use) running my
own kernel 3.11.x build.

Hope the info is useful.

Best Professional Regards.

On Wed, Oct 2, 2013 at 3:19 AM, Chris Wilson <chris at chris-wilson.co.uk>wrote:

> On Tue, Oct 01, 2013 at 06:15:00PM -0500, Alex Villací­s Lasso wrote:
> > I have seen this graphics freeze under stock 3.10.x from the Fedora
> > 18 x86_64 distro, and also with vanilla compiled 3.11 and 3.12-rc3.
> > After a few hours of working, the screen stops updating. The mouse
> > pointer moves around and changes if moved over different parts of
> > the screen, but the display itself does not change anymore. If I
> > check /sys/kernel/debug/dri/0/i915_error_state right then (via a
> > remote ssh), there is no error captured. However, if I do "echo 1 >
> > /sys/kernel/debug/dri/0/i915_wedged", after a few moments an error
> > is captured, as well as messages in the kernel log, both of which
> > are attached. If I try to restart the gnome-shell session, I get the
> > KMS console, and then the start of the graphic login, but then the
> > graphic login itself freezes again.
> >
> > Is the attached information enough to diagnose the issue?
> Afaict it was a userspace hang, the GPU was rightfully idle. Only on the
> reset did it actually die.
> I'd suggest looking at the stacktraces of the usual suspects and see who
> is waiting upon whom, or if there is a more obvious lockup. Then begin
> the painful process of tracing the interoperation of those two processes
> to try and catch the breakdown.
> -Chris
> --
> Chris Wilson, Intel Open Source Technology Centre
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Jose R R
IBM Lotus Symphony supported on GNU/Linux, Mac OS, and Windows.
Daylight Saving Time in USA & Canada starts: Sunday 08 March 2010
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