https://bugs.freedesktop.org/show_bug.cgi?id=65192
Priority: medium Bug ID: 65192 Assignee: dri-devel@lists.freedesktop.org Summary: Screensavers lock up machine (screen goes blank, keyboard unresponsive, sound loops; sysrq/ssh possible) Severity: major Classification: Unclassified OS: Linux (All) Reporter: luziphermcleod@yahoo.ie Hardware: x86-64 (AMD64) Status: NEW Version: git Component: Drivers/Gallium/r600 Product: Mesa
For a while now, some screensavers sometimes lock up my machine. That means all screens go blank, the keyboard is unresponsive (numpad-key doesn't toggle the indicator led), the sound loops. But I still can use ssh from a remote machine and the magic-sysrq-keys also work.
There is nothing to see in neither /var/log/messages (acquired via netconsole) nor /var/log/Xorg.0.log.
I can trigger the bug (or regression, I think it used to work about 2 months ago) reliably by using the Xfce4 screensaver settings application, which has a preview of the screensaver selected. When switching between screensavers, the lockup quickly occurs. A good candidate is the screensaver named "AntMaze", it alsmost always locks up my machine (only worked once so far). Other stuff works quite solid, Half-Life 2 worked multiple hours today.
Setting R600_HYPERZ=0 in /etc/environment didn't help. Also occurs on kernel 3.8.0-rc7.
I'm happy to provide more info if needed.
System Specs: Intel Core i7-965 2x Radeon HD4870 (rv770, currently only one active without xorg.conf), 2 Monitors
Gentoo Linux Kernel 3.10.0-rc3 Mesa 9.2.0 (git-60f9b72) git commit 60f9b722ef80c499a94b4e5ab7304dcd739ea569 Revert "i965: fix problem with constant out of bounds access (v2)" xorg-server-1.14.1 libdrm git commit 8a88e349975a64676f143183e835e6d296f29627 modetest: Make RGB565 pwetty too xf86-video-ati git commit commit bd2557ea5ef84b975060e929d5ece53ec464336f DRI2: add interpolated blanks to frame number in event handlers