eDP-1 is the Display Device Name, you can find it in previous step.
IMPORTANT: you have replace video=eDP-1:1600× : When it opens, add video=eDP-1:1600×, in my case, as value for “GRUB_CMDLINE_LINUX_DEFAULT”. You may replace gedit with other text editor for Ubuntu based systems. When it opens, run command to edit the config file: sudo gedit /etc/default/grub When terminal opens, run command: for p in /sys/class/drmcard?-}: " cat $p doneĪs the picture shows, it’s eDP-1 in my case.Ī.) Open terminal from system app launcher. To do so, open terminal from the system application launcher: How to Tell the Display Device Name in Ubuntu:įirstly, you have to find out the current Display name. It lists Ubuntu 21.04 as the first menu entry, custom Kernel parameter does not work for Ubuntu 20.04 in my case.Īnd after adding the parameter, the custom resolution should appear in Display settings, 1600×900 for instance: For instance, I’ve Ubuntu 21.04 and Ubuntu 20.04 dual-boot in my laptop, the startup boot menu is handled by Grub for Ubuntu 21.04.
If you have dual-boot or multi-boot systems, below steps may not work for “other Linux” in Grub boot menu.
In my case ( see the picture above), X resolution must be less than 1920, and Y resolution have to less than 1080.
You can’t set custom resolution higher than the maximum one in Display settings.
The good side is that it works on both Wayland and Xorg. In this tutorial I’m going to add video mode option as Kernel parameter. However, I prefer 1600X900 (16:9) a little more which is not available in settings. In the case, I’ve the default 1920X1080 (16:9) resolution. So this tutorial is going to show you another way to add your favorite screen resolution if it’s not available in Display settings. Since Ubuntu 21.04 uses Wayland as default display server, the previous method using xrandr does not longer work for adding custom screen resolution.
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