** Description changed: Binary package hint: xserver-xorg-video-intel I am running an updated gutsy install on a Thinkpad X40 (so i855GM graphics) with the -intel driver. I enabled Desktop Effects last night and the two times I have done a suspend/resume cycle since then, on resuming, is rendered entirely corruptly. X appears to still function, in that i can just about make out where windows are and I can switch desktops and see the corrupt workspaces scroll. Giving X the three finger salute makes it come back fine. Impact: Affects laptop users with older intel 855 graphics when they suspend/resume, leading to 3D textured surface corruption (corrupt X graphics) on resume forcing the user to reboot (and lose any saved work). Because of this, the bug is considered serious and deserving of a backported fix for Gutsy. Solution: The proposed patch adds a one-line fix to emit an invariant state at the appropriate point, to make X not become corrupted. This fix was uploaded to hardy about a week ago and testers report it correctly eliminates the corruption. + This patch has also been merged into the upstream intel driver. + Patch: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/133118/comments/64 Steps to reproduce: 1. On an intel 855gm graphics system, enable desktop effects 2. Suspend 3. Resume 4. Screen graphics become garbled/corrupted (but system is still responsive, just unusable) Regression Potential: Low. It's a one-line change that merely modifies what is allowed to be cached between state changes for older i830-class hardware. The patch has been tested on various -intel chipsets by at least half a dozen people without any regression seen. Some have reported occasional crashes after resume, however this is believed to be a separate bug not particular to i855, that this bug was simply hiding.
-- very corrupt X after suspend/resume https://bugs.launchpad.net/bugs/133118 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
