Forwarding this bug from Ubuntu reporter mmbossoni: http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/418970 [Problem] X Freezes switching from terminal to X session - I cannot use keyboard or mouse. [Original Description] If I switch to a terminal (Ctrl+Alt+F1) and then switch back to the X server the system crashes and I need to manually reboot. VGA compatible controller: ATI Technologies Inc RS482 [Radeon Xpress 200] I'm using Karmic alpha 4 + updates Package version: 1:6.12.99+git20090629.f39cafc5-0ubuntu6 I have no customized xorg.conf
Created attachment 29146 [details] lspci.txt
Created attachment 29147 [details] Xorg.0.log
probably a dupe of bug 23623. Does KMS work any better?
Hi, Enabling the KMS support make impossible to X to goes up. Not even the logon screen appear
Hi, FYI, I've updated the package to the latest version available from my distribution (6.12.99+git20090825.fc74e119-0ubuntu2) and everything worked well.
I forgot to mention that worked with both KMS and the X way.
From the downstream bug: Marcelo Bossoni writes: "Hi, appear the bug came back with the beta release. radeon.modeset=1 keep things working well, but the X way keeps freezing."
(In reply to comment #7) > From the downstream bug: > > Marcelo Bossoni writes: > "Hi, appear the bug came back with the beta release. > radeon.modeset=1 keep things working well, but the X way keeps freezing." > What version or commit id ended up in the beta release?
The beta release was 6.12.99+git20090825.fc74e119, so up to commit fc74e119. For the release we are targeting 6.12.99+git20090929.7968e1fb. Marcelo, it would be helpful if you could update to the latest -ati in Karmic and confirm the bug is still occurring with that version.
Updated to 6.12.99+git20090929.7968e1fb Everything seems to work correctly now. KMS with AC: OK KMS without AC: OK No KMS with AC: OK No KMS withtout AC: OK
Thanks for verifying that.
I've been experiencing the same problem, and for me the problem is _almost_ gone (it's at least very workable right now, unlike before. Thanks for that.). I've tested the git revision mentioned below (7968e1fb) and the 6.12-branch of a few days ago (0db4b1708). Both versions show the same behaviour. I've only tested without KMS, I haven't got KMS set up yet. I'm still seeing this problem (or at least a problem with the same symptoms) when I pull out or plug in the AC connector at the same time as switching from the terminal to X. The problem does not occur when switching from X to the terminal while changing the AC connection. This problem seems to occur pretty reliably (though not every time), so it seems the timing is not super critical. This problem also occurs when I unplug the AC connector while the laptop is suspended to disk (e.g., when it's off). As soon as it desuspends and tries to restore X, it freezes. It seems that the kernel realizes the AC adapter is unplugged immediately after desuspending, and at the same time X is being restored. This does not happen when I manually switch to text mode before suspension and switch back manually (a while) after desuspending. Marcelo, could you perhaps see if you can reproduce this?
It seems this bug is really a duplicate of 22140 (and is not entirely fixed yet). *** This bug has been marked as a duplicate of bug 22140 ***
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