Created attachment 34898 [details] [review] Dmesg for 2.6.32-19-generic-pae Seems I have encountered another issue with my Radeon HD 3400 and xf86-video-ati 6.13.0. I copy&paste my machine info from an earlier, similar bug report (http://bugs.freedesktop.org/show_bug.cgi?id=19544) if that's ok: I have a Lenovo T400 with a "ATI Technologies Inc Mobility Radeon HD 3400 Series rev 0" graphics chip. Usually I boot up with the machine in the dock (Lenovo Advanced Mini Dock), and use the DVI output there to drive a Samsung 24" display (multi-head via xrandr). Using 6.13.0 (on Ubuntu lucid i686, KMS enabled), and when the laptop is in the dock, my old problem with the cycling through uniformly colored full screens on the internal display (white->red->green->blue->grey->vertical black/white gradient->horizontal black/white gradient) has resurfaced. This time it does not happen at X startup, but after a seemingly random period of time, even when there is not much graphical load. The external screen just goes black (even into powersave) and the internal display does the color cycling. This is accompanied by the OS locking up, effectively a hard freeze. Sorry I do cannot provide clear steps for reproducing the issue, but I could not see any particular reason for this happening, as the occurrences look random to me. If anyone has tips for locating the problem, I will be happy to assist, of course. I attach my dmesg info and X log for debugging.
Created attachment 34899 [details] Xorg.log for my system
In this case, you are experiencing a GPU lockup rather than a modesetting configuration issue.
(In reply to comment #2) > In this case, you are experiencing a GPU lockup rather than a modesetting > configuration issue. Ah, okay. What could cause such a GPU lockup? Can it be a driver issue, i.e. is this bugzilla even the right place to come with such a problem?
(In reply to comment #3) > Ah, okay. What could cause such a GPU lockup? Can it be a driver issue, i.e. is > this bugzilla even the right place to come with such a problem? GPU lockups are hard to track down especially if they aren't easily reproduceable. But this is the correct place to file a gpu lockup bug.
Hmm, okay. I can confirm that the problem also occurs when the laptop is not in the dock. No news on possible circumstances which could be used to reproduce the problem. All I can say is that I never had the problem on karmic.
Sascha Steinbiss, Ubuntu 10.04 Desktop reached EOL on May 9, 2013. For more on this, please see https://wiki.ubuntu.com/Releases . If this is reproducible in a supported release, it will help immensely if you filed a new report with Ubuntu by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information running the following from a terminal: ubuntu-bug xorg Also, please feel free to subscribe me to it. For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.
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