On 9/23/20 12:44 AM, Yuri wrote:
Xorg for me starts with the resolution 1920x1080.
I know that 2560x1600 is supported because the NVidia settings program
can switch to 2560x1600 by typing 2560x1600 into it. The window
manager stays in a square with the size 1920x1080, and the extra space
appears around it.
But how to change xorg.conf in order to make 2560x1600 a default
resolution?
I tried to add the line Modes into this section:
SubSection "Display"
Viewport 0 0
Depth 1
Modes "2560x1600" "1920x1080"
EndSubSection
But Xorg fails to accept the 2560x1600 value with this warning:
[ 9995.669] (WW) NVIDIA(0): No valid modes for "DFP-1:2560x1600";
removing.
and still uses 1920x1080.
I would run xrandr after X has started (even at the incorrect
resolution) and grep for 2560 - it should give you the specific
resolution that Xorg detects as valid. For example on my system:
$ xrandr |grep 2560
HDMI-A-0 connected primary 2560x1440+1080+0 (normal left inverted right
x axis y axis) 553mm x 311mm
2560x1440 59.95*+
$
in my environment i do not populate xorg.conf with resolutions, rather I
let X auto-detect them. Then if the default resolution does not do what
I want I have a script which sets the desired layout and resolution.
For example here's one for my dual monitor setup:
$ cat ~/.screenlayout/duce.sh
#!/bin/sh
xrandr --output DisplayPort-0 --mode 1920x1080 --pos 0x0 --rotate right
--output HDMI-A-0 --primary --mode 2560x1440 --pos 1080x0 --rotate
normal --output DVI-D-0 --off
$
Regarding the nvidia utility setting the 2560x1600 resolution - perhaps
its injecting custom modelines, if that is the case you can also do this
via xrandr using the --newmode argument.
cheers,
-pete
--
Pete Wright
p...@nomadlogic.org
@nomadlogicLA
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