setting nomodeset with Grub
I have a machine that has a dual boot configuration with Ubuntu and Slackware and I need nomodeset for both.
For Ubuntu, I can specify nomodeset in /etc/default/grub, but how can I set it for slackware ?
Per my undestanding, modifying /boot/grub/grub.cfg isn't a good idea as it gets overridden everytime Grub gets updated, and one option I can think of is modifying 30_os_prober in a way that automatically includes nomodeset for other Linux in grub.cfg.
or is there any other way to set nomodeset for other OS' in different partitions ?