Public bug reported:
I have a shuttle with ati RS480 chipset
01:05.0 VGA compatible controller: ATI Technologies Inc RS480 [Radeon Xpress
200G Series]
I am never able to enable the DVI-0 output if the VGA-0 cable is connect
to the machine, I tried xrandr and gnome-display-properties. gnome-
display-properties crashes most of the times using the ati RS480, when
setting mirror mode or if I switch the monitors from the VGA-0 to DVI-0,
and them try to use gnome-display-properties.
xrandr --output DVI-0 --auto --output VGA-0 --auto --same-as DVI-0
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 1920 x 1920
VGA-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm
x 268mm
1920x1080 60.0*+
1600x1200 60.0
1680x1050 60.0
1280x1024 60.0
1440x900 59.9
1280x960 60.0
1280x800 59.8
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
DVI-0 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 519mm
x 324mm
1920x1200 60.0*+
1600x1200 60.0
1680x1050 59.9
1280x1024 75.0 60.0
1152x864 75.0
1024x768 75.0 60.0
800x600 75.0 60.3
640x480 75.0 59.9
720x400 70.1
S-video disconnected (normal left inverted right x axis y axis)
** Affects: ubuntu
Importance: Undecided
Status: New
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xrandr 1.3 does not work on ati RS480 for dual monitor setup
https://bugs.launchpad.net/bugs/428346
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