lubuntu-desktop team mailing list archive

[eigenroot <eigenroot@xxxxxxxxx>]

Hi everyone,

I set up dual monitors (a 1920x1080 DVI monitor and an old 1024x768 VGA
monitor) for Lubuntu 11.04, but one of them (the VGA) is flickering or just
blank. However, either of them works fine in a single-monitor configuration.
The output of "xrandr -q" is as follows:

################
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
HDMI-0 disconnected (normal left inverted right x axis y axis)
DVI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
521mm x 293mm
   1920x1080      60.0*+
   1680x1050      60.0
   1280x1024      75.0     60.0
   1440x900       59.9
   1152x864       75.0
   1024x768       75.1     70.1     60.0
   832x624        74.6
   800x600        72.2     75.0     60.3     56.2
   640x480        72.8     75.0     66.7     60.0
   720x400        70.1
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm
x 0mm
   1024x768       60.0*
   800x600        60.3     56.2
   848x480        60.0
   640x480        59.9
###############

And the video card is Radeon HD 6450. It is fine according to
https://help.ubuntu.com/community/RadeonDriver. Could anyone please help?
Thanks.