This article is about a solution when GDM is not start.
Here is a thread I created for this topic: https://ask.fedoraproject.org/t/the-best-practice-when-facing-gdm-not-starting/20789
When I will face GDM not starting next time,
- Select different kernel from boot menu.
- Type Ctrl+Alt+F N (N >= 2) on GDM. Then the display is changed to console with ttyN. Then I can run some commands to find a solution to fix GDM. And type Ctrl+Alt+F1 to return the GDM after fixing a problem by running commands.
How to change font size on console.
I referred this link: https://ask.fedoraproject.org/t/hwo-to-increase-the-size-of-tty-font/2604. This example is to use the font /usr/lib/kbd/consolefonts/LatGrkCyr-12x22.psfu.gz as a console.
Update the line below.
$ vi /etc/vconsole.conf ... FONT="LatGrkCyr-12x22"
Update the kernel parameter.
$ sudo grubby --update-kernel=ALL --args=vconsole.font=LatGrkCyr-12x22 $ sudo grubby --info=ALL
Reboot
$ sudo reboot
If you want to revert the change, run this command.
$ sudo grubby --update-kernel=ALL --remove-args=vconsole.font
