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I use my laptop as a workstation at home with an external screen. When I
switch screens - turn laptop off, external on - the laptop screen is
reactivated when I close the lid.
When I switch from laptop to external screen I open gnome-display-properties
and:
- turn on the external monitor
- select the correct resolution
- turn off the laptop monitor
- apply
- close laptop lid
The last action seems to reconfigure the display settings, probably something
to do with the acpi scripts. The laptop screen is "on" again and "Same image on
all monitors" is checked. The resolution for the external screen falls back to
a standard resolution. I then:
- turn off "Same image ..."
- turn off laptop screen
- select correct resolution for external monitor.
The resolution on the laptop is 1366x768, on the external screen 1280x768.
I configured screen resolution for the external LCD using xrandr in ~/.xprofile
and this works well. Contents of my .xprofile:
#!/bin/sh
xrandr --newmode "1280x768" 79.50 1280 1344 1472 1664 768 771 781 798
-hsync +vsync
xrandr --addmode VGA1 1280x768
xrandr --output VGA1 --mode 1280x768
------------------------
xrandr output:
~$ xrandr -q
Screen 0: minimum 320 x 200, current 1280 x 768, maximum 8192 x 8192
VGA1 connected 1280x768+0+0 (normal left inverted right x axis y axis) 340mm x
270mm
1280x1024 75.0 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
1280x768 59.9*
LVDS1 connected (normal left inverted right x axis y axis)
1366x768 60.0 +
1360x768 59.8 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
** Affects: ubuntu-release-notes
Importance: Undecided
Status: Invalid
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
--
Switching between screens turns on "Same image on all monitors" when closing
laptop lid
https://bugs.launchpad.net/bugs/741151
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