Public bug reported:
I have a Compaq Presario 2104US which has an ATI Mobility U1 in it. I
tried getting the external display working (connected via VGA) but was
unable to do so. I tried using xrandr --auto (nothing happened), tried
the screen resolution as well as the screens & graphics utility but
neither worked. I also tried messing with xorg.conf which resulted in
the laptop restarting using the vesa driver which does use the external
display in clone mode, but graphically I am unable to display video
(choppy)
lspci output says
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility U1
** Affects: ubuntu
Importance: Undecided
Status: New
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open source ati driver in hardy can't do external monitor on laptop
https://bugs.launchpad.net/bugs/222905
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