Thread: problem with second monitor

i have been running ubuntu 9.10 on dell inspiron 6400 short while not without issues working quite well.

had second monitor set extended desktop , seemed work well. second monitor has different resolution notebook monitor not problem. had positioned above notebook monitor.

when second monitor unplugged worked fine , display reverted single screen (rather extended desktop).

first problem came 1 time when plugged in external monitor notebook still running. problem wasn't @ point plugged in rather when went system | preferences | display , activated second monitor. both monitors went black , spinning clock seen half on each black screen computer frozen , had cold booted.

tried playing around various scenarios in display configuration point way can activate second monitor if 2 monitors mirrored (and of course running same resolution). mirroring displays of no value me.

btw if second monitor plugged in when boot laptop both screens display ubuntu logo during boot.

tried plugging in different external monitor same results. want able use data projector laptop. presume results same although haven't been able test out.

output xrandr without external screen plugged in:
(lvds1 laptop screen, vga1 17" ibm screen, tv1 widescreen 19" screen.)

screen 0: minimum 320 x 200, current 1280 x 800, maximum 4096 x 4096
vga1 disconnected (normal left inverted right x axis y axis)
lvds1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1280x800 60.0*+
1024x768 85.0 75.0 70.1 60.0
832x624 74.6
800x600 85.1 72.2 75.0 60.3 56.2
640x480 85.0 72.8 75.0 59.9
720x400 85.0
640x400 85.1
640x350 85.1
tv1 disconnected (normal left inverted right x axis y axis)

if boot laptop second monitor connected this:
(if plug in second monitor while notebook running , execute xrandr go black screen , freeze - thing visible frozen mouse pointer)

screen 0: minimum 320 x 200, current 1280 x 800, maximum 4096 x 4096
vga1 connected (normal left inverted right x axis y axis)
1280x1024 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
lvds1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
1280x800 60.0*+
1024x768 85.0 75.0 70.1 60.0
832x624 74.6
800x600 85.1 72.2 75.0 60.3 56.2
640x480 85.0 72.8 75.0 59.9
720x400 85.0
640x400 85.1
640x350 85.1
tv1 disconnected (normal left inverted right x axis y axis)

i have no idea go here

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