Public bug reported:
In Jaunty xrandr doens't mark the native resolution of my external LCD monitor
as default. Therefore, using the --auto option switches to a non-native mode.
The vide driver is radeon, on an Radeon Mobility X600 board.
Here is the output of xrandr just after X is started:
Screen 0: minimum 320 x 200, current 1280 x 960, maximum 3840 x 2560
VGA-0 connected 1280x960+0+0 (normal left inverted right x axis y axis) 474mm x
296mm
1680x1050 59.9
1280x1024 75.0 60.0
1280x960 60.0*
1152x864 75.0
1024x768 75.0 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 59.9
720x400 70.1
DVI-0 disconnected (normal left inverted right x axis y axis)
LVDS connected 1280x960+0+0 (normal left inverted right x axis y axis) 0mm x
0mm
1920x1200 60.0 +
1920x1080 60.0
1600x1200 60.0 59.9
1680x1050 60.0
1600x1024 60.2
1400x1050 60.0 60.0
1280x1024 59.9 60.0
1440x900 59.9 59.9
1280x960 60.0* 59.9
1280x854 59.9
1360x768 59.8
1280x800 59.8
1152x864 60.0
1280x720 59.9
1152x768 59.8
1024x768 60.0 59.9
800x600 60.3 59.9
640x480 59.9 59.4
S-video disconnected (normal left inverted right x axis y axis)
-----------------
The list of modes for the VGA-0 output lacks the "+" sign that indicates the
default resolution (which is 1680x1050). I also attach the output from xrandr
--verbose as it is after I manually set the mode to 1680x1050. Also attached
are the xorg log and configuration.
Note that this worked fine in 8.10 with the same hardware.
** Affects: ubuntu
Importance: Undecided
Status: New
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Regression: xrandr doesn't detect native resolution for external LCD
https://bugs.launchpad.net/bugs/352353
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