Public bug reported:
Binary package hint: gdm
I am using Jaunty Jackalope.
If I log on, then "switch user" to another user, and do anything to get
out of that second session, laptop freezes up. It does not respond to
any keyboard or mouse movement.
Steps to reproduce:
1) Log on as myself
2) Open a "Guest session" (but this will work with ANY second session)
3) Do anything to get out of the guest session, for example Ctrl-Alt-F1 or
"Switch user"
The laptop freezes up and becomes unusable. However, linux kernel
continues to run and I can SSH to the machine.
If I ssh, su to root, and do /etc/init.d/gdm restart, all sessions
disappear and things return to normal as if no one was logged on.
This is a very obnoxious bug, as the laptop is used by my entire family
and is almost unusable due to this bug.
This does NOT in any way depend on whether I run compositing window
manager.
Searches in Xorg.*.log yield messages in the last session's log (which I
am not sure have much to do with behavior):
[ 8.153714] (II) intel(0): Modeline "640x400"x85.1 31.50 640 672 736 832
400 401 404 445 -hsync +vsync (37.9 kHz)
[ 8.153743] (II) intel(0): Modeline "640x350"x85.1 31.50 640 672 736 832
350 382 385 445 +hsync -vsync (37.9 kHz)
[ 8.163164] (II) intel(0): EDID for output TMDS-1
[ 8.165385] (II) intel(0): xf86BindGARTMemory: bind key 7 at 0x0212c000
(pgoffset 8492)
[ 8.382084] (II) intel(0): xf86UnbindGARTMemory: unbind key 7
[ 8.383335] (II) intel(0): EDID for output TV
exaCopyDirty: Pending damage region empty!
[ 26.855631] (II) intel(0): xf86UnbindGARTMemory: unbind key 2
[ 26.855658] (II) intel(0): xf86UnbindGARTMemory: unbind key 3
[ 26.855717] (II) intel(0): xf86UnbindGARTMemory: unbind key 4
[ 26.855871] (II) intel(0): xf86UnbindGARTMemory: unbind key 5
[ 26.855880] (II) intel(0): xf86UnbindGARTMemory: unbind key 6
block already free
block already free
block already free
Also, there is nothing of interest in /var/log/messages. I did save
straces of two gdms that were running, and did not find anything
exciting there.
potato:root:~ ###apt-cache policy gdm
gdm:
Installed: 2.20.10-0ubuntu1
Candidate: 2.20.10-0ubuntu1
Version table:
*** 2.20.10-0ubuntu1 0
500 http://us.archive.ubuntu.com jaunty/main Packages
100 /var/lib/dpkg/status
** Affects: gdm (Ubuntu)
Importance: Undecided
Status: New
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Swithing to another user and then to anything else, freezes laptop. Jaunty
https://bugs.launchpad.net/bugs/348428
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