Monitor not detected by gnome-control-center
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
gnome-control-center |
New
|
Undecided
|
Unassigned |
Bug Description
affects gnome-control-
When trying to change monitor resolution via System Tools ->
Preferences -> Settings and then Devices -> Screen Display, a message
appears saying "Could not get screen information" and I cannot change
the monitor resolution or configure a second external monitor or
anything of the like.
On the other hand, I can use in a terminal the xrandr command and it
works perfectly, so I can configure the displays via this command.
If I start gnome-control-
can see the message:
Error calling GetCurrentState:
GDBus.Error:
"org.gnome.
I do not know if this error message may be related with the
malfunction
of the program.
The bug has started after some software upgrade, but I am not able to
remember which packages were updated at that time, in particular I do
not know if gnome-control-
Ubuntu release is 18. gnome-control-
--
Miguel Quirós Olozábal
Departamento de Química Inorgánica. Facultad de Ciencias.
Universidad de Granada. 18071 Granada. SPAIN.
email: mquiros<
As the reported error message seems to point to mutter (I am using compiz), I start mutter issuing
mutter --replace &
And after this, I enter gnome-control- center, then the monitor is detected and its configuration is accessible. But this means stopping using compiz ...
Googling here and there, I have found that monitor configuration is accessible via unity-control- center but cheating with a variable in the environment, the command is:
XDG_CURRENT_ DESKTOP= Unity:Unity7: ubuntu unity-control- center &
If the variable is not set, very few options are available under unity-control- center, in particular not the monitor. Well, at least it is a more or less acceptable workaround (I have put it in a script for not needing to remember the full command).