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display settings won't change to monitor resolution

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Tom

I'm having trouble to set up the correct resolution of my external monitor for my laptop.

I am using a Lenovo ThinkPad P15v Gen 3 with Mesa Intel Graphics (ADL GT2) running Ubuntu 22.04.1 LTS (Gnome Version: 42.2, Windowing System: X11).

The monitor is a iiyama G-Master GB3467WQSU Red Eagle with UWQHD (3440x1440) directly connected to the ThinkPads HDMI port.

I've tried various how tos using xrandr basically all having the same workflow:

$ cvt 3440 1440
# 3440x1440 59.94 Hz (CVT) hsync: 89.48 kHz; pclk: 419.50 MHz
Modeline "3440x1440_60.00"  419.50  3440 3696 4064 4688  1440 1443 1453 1493 -hsync +vsync
$ xrandr --newmode "3440x1440_60.00"  419.50  3440 3696 4064 4688  1440 1443 1453 1493 -hsync +vsync
$ xrandr --addmode HDMI-1 3440x1440_60.00
$ xrandr --output HDMI-1 --mode 3440x1440_60.00
xrandr: Configure crtc 1 failed

It always resets to the previous setup leaving me with mushy 2560x1080. I have no idea how to debug this Problem further. It would be awesome if you could help.

Regards, Tom

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