System/hardware: 10.04 (lucid) 2.6.32-25-generic 1024x768
$ lspci|grep "VGA" 00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 03) This reproduces the problem consistently (gnome-screensaver is installed): System|Preferences|Screensaver. By default, AntSpotlight is selected. After a couple of seconds the screen goes blank, sometimes with vertical zebra stripes. syslog contains: Oct 2 12:26:41 ubuntu-desktop kernel: [ 5531.425838] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck Oct 2 12:26:41 ubuntu-desktop kernel: [ 5531.740027] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung Oct 2 12:26:41 ubuntu-desktop kernel: [ 5531.740038] render error detected, EIR: 0x00000000 Oct 2 12:26:41 ubuntu-desktop kernel: [ 5531.740880] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 4120 at 1135) Oct 2 12:26:43 ubuntu-desktop kernel: [ 5533.792017] [drm:i915_gem_idle] *ERROR* hardware wedged So after a reboot (pressing the power button seems to more-or-less cleanly shutdown), at GRUB, I've pressed 'e' to edit and after "quiet splash" I've added "i915.modetest=1" (no quotes). After that, I can go to the screen saver preferences and there is no black screen/"crash". Screensaver comes in after the specified time and works, probably slowly, though. However, I then realised that "modetest" should have been "modeset". So, not surprisingly, syslog reports: kernel: [ 18.768163] i915: Unknown parameter `modetest' If I use modeset=0, or modeset=1, then the blanking/"crash" still happens when I go to the screensaver preferences. So, modetest=0 or modetest=1 (either one avoids the blanking) is doing *something*. But what, and why? Anyway, I'm happy to live with this until the official release of Maverick, which hopefully will solve things. -- MASTER: [i845] GPU lockup (apport-crash) (Should KMS be blacklisted?) https://bugs.launchpad.net/bugs/541492 You received this bug notification because you are a member of Ubuntu-X, which is the registrant for xf86-video-intel. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
