Comment 8 for bug 1071288
Revision history for this message
| Berend De Schouwer (berend-de-schouwer) wrote Re: No multiple monitors | #8 |
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1b1ed1a
(Get the code!)
I've found a probable cause.
xrandr won't enable LVDS1 unless VGA1 is off. So I have to plug in VGA1, and then run:
xrandr --output VGA1 --off
xrandr --output LVDS1 --mode 1366x768
xrandr --output VGA1 --auto
xrandr --output VGA1 --primary
I have to turn VGA1 off, then I can turn LVDS1 on, and then VGA1 on.
The xrandr error message is "cannot find crtc for output LVDS1"
A bit of googling shows that this happens to more people, with different video cards, on all sorts of versions, with all sorts of Linux distributions.
Possibly related, possibly off-topic: I make VGA1 the primary display, because if I don't I can't resize beyond a certain size even though VGA1 is 1920x1080. This may be because VGA1's resolution is higher, and windows are stuck on LVDS1's size.