Public bug reported:
Binary package hint: xserver-xorg-video-ati
My computer is a Fujitsu/Siemens Laptop Lifebook E series with ATI
Technologies Inc Radeon Mobility X1400.
I'm using the xserver-xorg-video-ati open source driver.
The native resolution of the screen is 1680x1050 (16:10) and it's
working great except when you unplug a beamer.
Steps to reproduce :
1) Have your screen in its native 1680x1050 resolution (16:10)
2) Hotplug a beamer. It will be detected as a screen in gnome-display-properties
3) Most beamer doesn't support such a high resolution (or requires a 4:3 ratio)
and will stay black. With gnome-display-properties, lower your resolution (for
example at 1024x768)
4) Do your presentation
5) Unplug the beamer. It will disapear from gnome-display-properties
6) Try to reset your resolution : 1680x1050 has disappeared. All other
resolution up to 1600x1024 are available. Only this one is not.
Workaround : restarting X (by logging out) is enough. GDM will
automatically have the good resolution.
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: New
** Also affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
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1680x1050 resolution not available anymore after unpluging a beamer
https://bugs.launchpad.net/bugs/329071
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