I don't think this bug should be closed until the "CRT/LCD" hotkey does
its jobs.
If the external display is to be handled by xrandr then the bug is maybe a lack
of assignation of the
ibm/hotkey HKEY 00000080 00001007 to a script in /etc/acpi.
(see bug #159185)
The fix could be something like creating /etc/acpi/events/thinkpad-
crtlcd :
# Turn on/off the external display
event=ibm/hotkey HKEY 00000080 00001007
action=/etc/acpi/external-display.sh
and creating /etc/acpi/external-display.sh
This last script should :
- detect the screen resolution of the display of the laptop (LCD)
- detect the capabilities of the external display (CRT)
- use xrandr to cycle between : LCD alone, CRT+LCD, CRT alone
with the CRT resolution beeing :
- the LCD resolution if the CRT supports it
- the highest CRT resolution available if the LCD resolution is not
supported by the CRT
xrandr tips located at :
http://www.thinkwiki.org/wiki/Installing_Ubuntu_6.06.1_on_a_ThinkPad_R60e#Using_xrandr_with_Ubuntu_7.10
should do the job.
Alternatively the hotkey could be masked away in /proc/acpi/ibm/hotkey
and the display toggling could maybe be handled by the ibm firmware.
--
Problems with /proc/acpi/ibm on Thinkpad X40
https://bugs.launchpad.net/bugs/164471
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