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I have a multi-head environment: Code: Section "ServerLayout" Identifier "Default" Screen "Left" 0 0 Screen "CentreAndRight" RightOf "Left" EndSection Section "Screen" Identifier "CentreAndRight" Device "hd6850" EndSection Section "Screen" Identifier "Left" ...
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- 01-23-2014 #1
GDM3 starts only on one X Screen of two
Section "ServerLayout" Identifier "Default" Screen "Left" 0 0 Screen "CentreAndRight" RightOf "Left" EndSection Section "Screen" Identifier "CentreAndRight" Device "hd6850" EndSection Section "Screen" Identifier "Left" Device "hd2000" EndSection Section "Device" Identifier "hd6850" Driver "radeon" BusID "PCI:1:0:0" EndSection Section "Device" Identifier "hd2000" Driver "intel" BusID "PCI:0:2:0" EndSection
Xorg.0.log says that there is no problem with any Screen. And indeed after I log in, the mouse pointer moves between one monitor with GNOME on it and two other black monitors. And for instance xrandr tool tells that there are indeed two screens and the monitors are identified correctly. So this makes me think that there's no problem with Xorg server but it is GDM3 which doesn't behave properly. Another strange thing is that if I want to get the value of DISPLAY variable on the Screen with GNOME I get ":0" instead of ":0.0". GDM logs also confirm that it is GDM who sets this value.
One more word about GDM2. Before upgrade to GNOME 3 I had no problem with GDM and could use all the three monitors simultaneously with the same xorg.conf So does GDM3 need to be configured differently?
BTW, I have default settings for GDM3.
I would be glad too to get a link to some really good and descriptive documents about GDM and X because the official ones seem to be very scanty and mostly low-level.
- 01-31-2014 #2
- Join Date
- Apr 2009
- I can be found either 40 miles west of Chicago, in Chicago, or in a galaxy far, far away.
What video hardware and drivers are you running? Never mind - I see you are running Intel and Radion gear. Current X.org systems don't need the /etc/X11/xorg.conf file to work properly. At worst you will need to go into the graphics configuration tool / GUI to set it up for twin-view, or however you want it to work.Sometimes, real fast is almost as good as real time.
Just remember, Semper Gumbi - always be flexible!
- 01-31-2014 #3