One random freeze could be:
commit 0920a48719f1ceefc909387a64f97563848c7854
Author: Stéphane Marchesin <[email protected]>
Date: Tue Jan 29 19:41:59 2013 -0800
drm/i915: Increase the RC6p threshold.
This increases GEN6_RC6p_THRESHOLD from 100000 to 150000. For some
reason this avoids the gen6_gt_check_fifodbg.isra warnings and
associated GPU lockups, which makes my ivy bridge machine stable.
That kernel is available in ppa:mainline under drm-intel-nightly.
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https://bugs.launchpad.net/bugs/1137817
Title:
[ivb] System freeze after high memory usage
Status in “xserver-xorg-video-intel” package in Ubuntu:
Confirmed
Bug description:
I have randomly system freezes on Ubuntu 12.10 64 bit since I installed my
system on a new blank ultrabook (Wortmann Terra Mobile 1450 II) in December
2012.
When the system freezes no mouse , no keyboard, no REISUB is possible. The
screen is corrupted and did not update. The only key board functionality which
is still possible is Fn+F9 (switch display on/off). I need to switch off the
system hard.
The freeze occurs when the system runs on battery as also when it is plugged.
When the system freeze occurs with power adapter plugged the system switches
off when I disconnect the power adapter - even if the battery is full charged.
But the powermanagement in general seems to work perfect in Ubuntu 12.10.
To me it looks like the system freeze occurs often after high memory usage.
I can use the system with a few applications (Thunderbird / Firefox) for long
time (several hours) without any freeze.
But when I start java programming the probability increases that the problem
occurs. This means:
I start Eclipse 4.2, MySQL and GlassFish 3.2 Server. I open a lot of browser
windows and read and write much files to disk.
The memory usage in this case increases from less then 1GB to more than 3GB
(on total 8GB Ram) - I do not know if this is relevant - but maybe.
I observe the situation for more than two months. As I use my system for work
I have freezes one or two times a day - mostly when I have much work ;-) I
develop JEE server business applications - so in the situation when the system
freezes there is really no heavy graphic load. I am using Gnome Shell.
The freeze seems to be absolutely randomly - I can not reproduce the system
freeze.
I can not be sure but it seems to me that since yesterday the system
shuts down after some seconds when it feezes. I notice this because I
tried to login via ssh to collect the data of the file
/sys/kernel/debug/dri/0/i915_error_state. But as the system shuts down
I was not able to check the content.
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