Public bug reported:
I just upgraded from 12.10 to 13.04 beta 2, and on reboot unity froze.
After some trial and error, I was able to narrow it down to my dual-
monitor configuration.
Using the attached monitors.xml configuration, the display will freeze
after logging in from lightdm. However, if I remove monitors.xml, then
follow this process I can get a working dual-screen configuration for
the session, that then breaks the next time I reboot.
1. Launch the "Displays" utility
2. Switch the "HDMI1" (dell 22" monitor) off
3. Change the resolution from the default 1680x1050 on the "HDMI3" monitor
(samsung 23") to 1920x1080.
- This causes the screen to become distorted, but you can still sort of see
what's going on
4. Pick a lower resolution than 1920x1080 and apply it
5. Switch back to 1920x1080, this time it works
6. Turn the "HDMI1" monitor back on, at it's default resolution
At this point, the system is working with both monitors at their native
resolution.
This is some kind of regression from 12.10, since it worked fine there.
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Monitor configuration"
https://bugs.launchpad.net/bugs/1165067/+attachment/3623673/+files/monitors.xml
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https://bugs.launchpad.net/bugs/1165067
Title:
Multiple monitor configuration fails in 13.04
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