This bug has started to affect me on 13.04
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https://bugs.launchpad.net/bugs/1041790
Title:
[sandybridge-m-gt2] GPU lockup IPEHR: 0x0b160001 IPEHR:
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed = Triaged
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Title:
[sandybridge-m-gt2]
The workaround in comment #58 does eliminate the GPU lockups. Which I
notice when I boot in the morning and forget to do that workaround and
get a lockup part way through the day.
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** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Medium = High
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Incomplete = Triaged
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I'm seeing this on an X220 running up to date raring. Happens a few
times a day. .
alan@deep-thought:~$ grep SNA /var/log/Xorg.0.log
[12.175] (II) intel(0): SNA compiled: xserver-xorg-video-intel
2:2.20.19-0ubuntu1 (Timo Aaltonen tjaal...@ubuntu.com)
[13.744] (II) intel(0): SNA
try 'echo 0 /sys/module/i915/parameters/semaphores' to see if it stops
the hangs.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Triaged = Confirmed
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..and restart X (logging out should do it when lightdm is used)
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Title:
[sandybridge-m-gt2] GPU lockup IPEHR:
My first of this type happened today, even though I've already been
using SNA before since August or so. If this now starts to be recurring
(since I also started to have bug #1102390 only yesterday), I can try
disabling the semaphores.
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I've started getting this failure after migrating to Raring and I get
the recoverable lockups 3 times a day or even more with the same GPU
lockup message in dmesg. Apport has proposed [sandybridge-m-gt2+] GPU
lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001 as a bug title.
I am using 3.8.0-0-generic
** Bug watch added: freedesktop.org Bugzilla #54226
https://bugs.freedesktop.org/show_bug.cgi?id=54226
** Also affects: xserver-xorg-video-intel via
https://bugs.freedesktop.org/show_bug.cgi?id=54226
Importance: Unknown
Status: Unknown
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ok, so the hang I'm seeing is this same one, not that frequent though
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Title:
[sandybridge-m-gt2] GPU lockup
Timo: I've never had it completely hang the machine, but I've also not
been patient enough to sit around and wait to see if X will eventually
recover on its own, I always do a VT switch out and back (and get
welcomed by an apport dialog)
Has happened several times today. Will be upgrading to
Adam: is it a recoverable hang, meaning the session is restored after a
while? I've seen that happen once on my T420s..
try with the 3.8 mainline kernel too, and with SNA if possible
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed = Incomplete
** Changed in:
I've seen it happen with kernel 3.8-rc2 and SNA using the latest intel
driver from git.
The hang isn't always the same:
* Sometimes it locks the computer up completely, requiring a hard
reboot.
* Sometimes it locks X, but CTRL-ALT-F1 and back unlocks it.
* Sometimes it resolves itself without
I'm still seeing this on raring several times a day on my Thinkpad
T420s.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Expired = Confirmed
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We're closing this bug since there has not been a response from the original
reporter. However, the issue still exists please feel free to reopen with the
requested information. If you're not the original reporter, we'd prefer you
file a new bug report.
Some tips:
* Report X.org bugs via
Rocko, thanks for testing the git DDX. Next time you get one of these
freezes can you please collect a fresh i915_error_state, dmesg, and
Xorg.0.log?
Sounds like this bug should go upstream.
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@Timo Aaltonen
SNA — ok. looks like some sort of regression in the driver.
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Title:
[sandybridge-m-gt2] GPU
I've uploaded -intel 2.20.14 to raring, so please test with both UXA and
SNA to see if either or both work.
Rocko: I can't reproduce your bug with SNA (with this new version
anyway), works fine on my T420s. 2.6.99.902 sounds old too :)
** Changed in: xserver-xorg-video-intel (Ubuntu)
Yes, I've been running v2.20.14 from git (using SNA, not UXA) for a few
days on Quantal and so far I hasn't seen that other bug I mentioned - it
hasn't fatally locked up after the screensaver kicks in. However, it has
experienced *this* particular bug a few times, ie where the screen locks
but I
** Tags added: raring
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Title:
[sandybridge-m-gt2] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001
Status in
I still experience this bug, even with the latest intel driver from git,
xf86-video-intel-2.6.99.902. I would use SNA but it has an even more
annoying bug after the screen saver unlocks where unity just shows me a
black screen and mouse cursor, and I have to physically restart unity to
get it
I am hitting this bug. Can somebody please explain how to check if I am
using UXA or SNA and how to switch between the two? If SNA helps, and I
am using UXA I'd like to try SNA.
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@Dmitrijs: To find which method is being used, do:
grep AccelMethod /var/log/Xorg.0.log
I find also that the titlebars of non-focused windows are often light
grey instead of black when using SNA.
And to change methods, put this in your xorg.conf to set the
acceleration method and then restart
Switching from UXA to SNA fixes this for me too, on an Asus Zenbook
UX31E
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Title:
[sandybridge-m-gt2] GPU
Hi Bryce, I've been getting this error every once in a while and when it
happens, apport tries to report the bug like ten times. Let me know if I
can provide more information about it.
Cheers,
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I've filed another bug with apport and all my files are attached there:
bug 1059737, just in case they're not duplicates.
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I've been using SNA for a couple of weeks now, and it doesn't seem to
suffer from this particular bug.
The bug still occurs in the latest xf86-video-intel driver from git (as
of 27/9/12), though. It generally occurs when focus changes, eg when a
menu or popup window is opening.
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Ah, I am using xorg-edgers. Perhaps they are trying out SNA as the
default there.
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Title:
[sandybridge-m-gt2]
Yes, I think the bug doesn't happen with SNA whereas it occurs pretty
regularly with UXA. I've been using SNA for a couple of days now since
it became the default on my system. Does X now look for other xorg.conf
files? I created one called /etc/X11/xorg.conf-intel-sna and symlinked
to it to test
SNA is not the default for quantal. No, there is not a way to toggle
between UXA and SNA at run time. /var/log/Xorg.0.log is where to look
to see which acceleration tech is active.
If I understand your testing feedback, you do believe SNA helps
eliminate the freeze behaviors, and thus we can
Is SNA turned on by default now? I had a couple of hours freeze-free
with it the other day, but removed my xorg.conf shortly afterwards
because the white titlebars and glitchy 3D graphics were annoying, and
also because with SNA enabled the backlight didn't come on after the
screensaver turned it
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