ubuntu-x-swat team mailing list archive

["Robin.He" <754777@xxxxxxxxxxxxxxxxxx>]

Hi, guys. Thank you all for your kindness help. This bug seems finally solved on my computer by change the kernel version. I tested 3 different kernel images, and they are:
1. I added a PPA line 'ppa:kernel-ppa' in my synaptic package repository, and update the software package list. Then tried 2.6.39-0 kernel which listed in synaptic package list. Unfortunately, my GUI still lockup, and even I try to remote login my laptop, restart GDM, the computer completely dead and I have to push the power button to hard reboot it. Seems newer kernel also has the problem, I removed this kernel.
2. The second kernel I've test was downloaded from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.37.6-natty/, my system is i386 with 4G RAM, there is only generic version. It works fine, GUI never lockup, but when I test LibraOffice Calc,  the Calc crashed few times (it's acceptable). The shortage of this kernel is:  there are just 2.7G RAM available. So, I continue search other choices. This kernel still remains in my computer.
3. After some search in google, I found it here: https://launchpad.net/ubuntu/+source/linux/2.6.37-12.26/+build/2125798. I downloaded 3 debs including PAE kernel image and the header files. 

Till now, after 1 days test, the 2.6.37 PAE kernel image is running very fine on my laptop. I enabled compiz effect in traditional gnome desktop,  opened several XLS files in LibraOffice Calc, the animations and shadow effect looks so lovely. 
And the most important: the damn GUI lockup never occurred again till now. yeah, few software crashes sometime, but, no GUI lockup.
Maybe more people will also meet this problem when they purchase a new computer with Sandy-Bridge CPU. Hope someday the bug can be fixed after more lockup case be reported. 
Thank you  guys, I love the community.

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https://bugs.launchpad.net/bugs/754777

Title:
  [sandybridge-m-gt2] GPU lockup (Blitter IPEHR:    0x13000002, Render
  IPEHR: 0x02000006)