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.
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