On my laptop I use Xorg with the intel driver on Debian.
When I hotplug my 2560x1600 monitor, the desktop switches to that monitor.
When I hotplug my 2560x1440 monitor, the desktop gets extended.
Logs:
Xorg (==) intel(0): Display hotplug detection enabled
....
/usr/lib/gdm3/gdm-x-session: (II) intel(0): resizing framebuffer to
2560x1600
/usr/lib/gdm3/gdm-x-session[2975]: (II) intel(0): switch to mode
[email protected] on DP1 using pipe 0, position (0, 0), rotation normal,
reflection none
However, when I plug in a 2560x1440:
gdm-x-session[1788]: (II) intel(0): resizing framebuffer to 4480x1440
gdm-x-session[1788]: (II) intel(0): switch to mode [email protected] on DP1
using pipe 1, position (1920, 0), rotation normal, reflection none
This latter behaviour is not desired as it leads to occasional crashed.
Question:
- who does the mode-switching? (Xorg, driver, xinerama, gdm?)
- how can I change the behaviour, so that when I hotplug the 2560x1440
monitor, the framebuffer becomes 2560x1440 and not 4480x1440
Thanks,
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