I'm using Kernel Mode Setting to set my server's tty resolution.

I added GRUB_GFXMODE=1280x1024x24,auto to /etc/default/grub, and GRUB_GFXPAYLOAD_LINUX=keep was already there. There's no vga= or nomodeset.

I ran grub-mkconfig -o /boot/grub/grub.cfg and rebooted.

I also want to increase the scrollback buffer. I've read fbcon=scrollback:XXXk shouldn't be used because KMS is better than fbcon.

What's the new proper way to do this, using KMS?

1 Answer 1


fbcon works with a KMS backing device, there's no difficulty here at all. I would reconsider the accuracy of your anonymous source.

They may have been thinking of kmscon. If you're actually using kmscon then it has its own docs / manual page which will answer this question for you.

Note kmscon was a bit of an experiment by the author. If we're looking at wider adoption, I think the equivalent that's in the systemd tree, written by the same author, is the more obvious choice. The name of this equivalent does not include kms, iirc.

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