Hi Dave, it's good to hear you're able to reproduce this one reliably.
Please uninstall ia32-libs, reboot, and then attempt to reproduce this
bug (you can reinstall ia32-libs later). I want to rule it out as a
possible cause. ia32-libs includes 32-bit builds of various packages
and sometimes those packages get out of sync with the 64-bit versions; I
want to see if there is an old mesa or something in your ia32-libs
causing this bug.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/834635
Title:
[gm45] GPU lockup render.IPEHR: 0x01800020 after disabling LVDS
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