Public bug reported:
I'm using Ubuntu Intrepid. I recently bought a new monitor to use with
my Laptop (Acer Aspire 1642WLMi with Intel graphics card), and I'm using
xrandr to switch to two monitors. The commands I use are:
xrandr --fb 1280x1824 --output LVDS --mode 1280x800 --output VGA --mode
1280x1024 --below LVDS --verbose
to turn the monitor on, and
xrandr --fb 1280x800 --output LVDS --mode 1280x800 --output VGA --off
--verbose
to turn it off. The problem is that when I turn the monitor off, I
return to the login screen, I'm assuming because X11 restarts. This
doesn't happen all the times, it usually doesn't work when I have been
working on a session for some time. Some errors I found in some logs:
/var/log/gdm/:0.log.2:
(EE) intel(0): underrun on pipe B!
Xorg: intel_context.c:1020: UNLOCK_HARDWARE: Assertion
`intel->batch->cliprect_mode != REFERENCES_CLIPRECTS' failed.
/var/log/syslog:
Nov 14 15:30:15 ubuntujs gdm[11368]: WARNING: gdm_slave_xioerror_handler: Fatal
X error - Restarting :0
Nov 14 15:30:16 ubuntujs acpid: client connected from 12651[0:0]
Nov 14 15:30:20 ubuntujs bonobo-activation-server (jonatan-12676): could not
associate with desktop session: Failed to connect to socket
/tmp/dbus-aCE1Pj1qUH: Connection refused
I don't know what extra files are required, please let me know if you
need any extra information.
** Affects: xrandr (Ubuntu)
Importance: Undecided
Status: New
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X11/GDM crash after using xrandr
https://bugs.launchpad.net/bugs/298226
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