You have been subscribed to a public bug:
XrandR does not propose 3440x1440 21:9 resolution on Ubuntu 20.04 :
How to reproduce :
- Connect on HDMI 1.4 Intel HD 630 mobile a UWUHD 3440x1440 monitor
- Only 16:9 are proposed by xrandR
- XrandR should propose all supported resolutions
WorkAround : manually add the mode
xrandr --newmode "3440x1440_30.00" 196.90 3440 3600 3960 4480 1440 1441 1444
1465 -HSync +Vsync
xrandr --addmode HDMI-2 3440x1440_30.00
xrandr --output HDMI-2 --mode 3440x1440_30.00
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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XrandR does not propose 3440x1440 21:9 resolution
https://bugs.launchpad.net/bugs/1895301
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