On 13/03/14 20:22, Tim wrote:
Allegedly, on or about 13 March 2014, Ian Chapman sent:
I was having similar issues with GDM, where it would set up the order
of the monitors incorrectly, despite what was in the X configuration
or the desktop settings. Interestingly enough, the order was correct
when I logged in.
*Your* settings are loaded when you log in, they're specific to you, and
stored in your ~/.config/monitors.xml
GDM runs as the gdm user, and it can have its monitor configuration
settings set in /var/lib/gdm/.config/monitors.xml (gdm's home space
is /var/lib/gdm).
Yes, I realise that the user can have different settings to the display
manager. However, here's the interesting thing. From a VT if I login and do:
init 3
systemctl disable lightdm.service
systemctl enable gdm.service
init 5
GDM starts, but the logical order of the monitors is wrong. The login
dialog opens on the right monitor, but I have to move the mouse off the
right edge to go to the left monitor.
Then without changing any X config
init 3
systemctl enable lightdm.service
systemctl disable gdm.service
init 5
LightDM starts, and the logical order of the monitors is correct. I move
the mouse off the left edge to move to the left monitor.
If I delete my personal monitors.xml file, then when I login I inherit
whatever order GDM or LightDM uses.
So at the very least, it tells me that GDM and LightDM do not use the
same mechanism for deciding the ordering of monitors.
--
Ian Chapman.
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