As discussed (e.g.) in
<http://ubuntuforums.org/showthread.php?t=1047029>, if one uses
nvidia-settings to make use of a second display, then disables
the second display and disconnects it, a subsequent invocation
of nvidia-settings (e.g., to connect a different display) may
(will?) cause nvidia-settings to display a message such as:
Unable to load X Server Display Configuration page:
Failed to find display device 0x00000001 on screen 0 (on GPU-0)
while parsing metamode:
'CRT-0: nvidia-auto-select @1280x1024 +1440+0'
if one tries to select "X Server Display Configuration".
And at that point, it is no longer possible (in my experience,
despite trying the circumventions mentioned in the above-cited
ubuntuforums.org post) to perform any X Server Display
Configuration using nvidia-settings --even if the display
is re-attached ... unless one applies the attached patch
and rebuilds nvidia-settings.
A comment about the patch: it seemed to me that the existing
behavior of nvidia-setting (whining and refusing to do anything
because a display that used to be there wasn't there any more)
was ... well, "unfortunate" (to say it politely). So I changed
the code to bypass displays that it can't find -- which seems to
me to be ... well, almost sensible.
I note that ideally, this change would be made upstream. That,
or some other change would be made upstream to fix the problem.
In the mean time, the attached patch does resolve it for me,
and we thus have a way to make the FreeBSD port usable despite
Fix: Drop the attached patch into the port's files directory as
patch-ctkdisplayconfig-utils.c, then rebuild the port.
How-To-Repeat: I think I covered it fairly well in Description.
Maintainer has GNATS access.
bland 2012-04-07 15:39:05 UTC
FreeBSD ports repository
Let users to recover from the situation when the display was used is
Feature safe: yes
Revision Changes Path
1.53 +1 -0 ports/x11/nvidia-settings/Makefile
1.1 +11 -0 ports/x11/nvidia-settings/files/patch-src__gtk+-2.x__ctkdisplayconfig-utils.c (new)
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Modified version of patch commtted, thanks!
I'd prefere nvidia-settings to make some noise on the console in a such
And please, do bug upstream about the issue.