Since upgrading to Fedora 34, the display in grub, while booting, and in ttys is low resolution and ugly. Years ago I had played with grub config files to fix this, especially given that I’m using an nvidia, and the solution persisted through several Fedora release upgrades. It seems something has changed in F34.
How can I restore a native resolution? Here is my current /etc/default/grub:
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
#GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="rd.lvm.lv=[...]/root rd.luks.uuid=luks-[...] rhgb quiet rd.driver.blacklist=nouveau"
GRUB_DISABLE_RECOVERY="true"
## added to fix Plymouth with nvidia drivers
#GRUB_VIDEO_BACKEND="efi_gop"
## OR "efi_uga"
GRUB_TERMINAL_INPUT="console"
GRUB_TERMINAL_OUTPUT="gfxterm"
GRUB_GFXMODE="1920x1080x32"
GRUB_GFXPAYLOAD_LINUX="keep"
# from https://www.if-not-true-then-false.com/2015/fedora-nvidia-guide/2/
#GRUB_GFXPAYLOAD_LINUX="keep"
#GRUB_VIDEO_BACKEND="efi_gop" ## OR "efi_uga"
#GRUB_TERMINAL_OUTPUT="gfxterm"
#GRUB_FONT_PATH="/boot/grub2/fonts/unicode.pf2"
#GRUB_GFXMODE="auto" ## OR set resolution, like "1920x1080x24"
GRUB_ENABLE_BLSCFG=true
Maybe there is a better/simpler config now? I noticed that the site I had previously used as a guide has updated their page to now create config files for adding an option nvidia-drm modeset=1 but gives no explanation. Not sure if this is recommended.
I am not using nvidia drivers but low resolution in grub and tty usually means not using the modesetting driver. Kernel modesetting basically means setting the display resolution and some other settings in the kernel space rather than the user space. So using nvidia_drm modeset=1 may be helpful in this situation.
I tried nvidia-drm.modeset=1 in grub’s linux command line, and while that fixes plymouth’s resolution partway into the booting process (after entering the LUKS passphrase), the grub menu, early part of booting, and tty are all with the lower resolution. To note, even with this parameter option set, the tty are still low res even after booting is completed.
Also, the grub and tty resolution was fine at 1920x1080 before F34 with the above /etc/default/grub settings.
I tried changing some settings in /etc/default/grub without success as I’m mostly guessing in the dark. I noticed some arguments are in double quotes while others are not. I’m not sure if it makes a difference, though since the inconsistency existed before F34 I wouldn’t think that’s the source of the problem.
Factors to keep in mind:
Motherboard is using UEFI mode with CSM and fastboot disabled
system uses LUKS encryption
proprietary nvidia drivers and akmod installed from negativo17
grub, booting text, and tty were at 1920x1080 before F34
I had a similar issue with both Intel and AMD GPUs. Oddly enough, I found that enabling “Full screen boot logo” option in EFI firmware setup helped in my case.
Thanks, I read that too somewhere. I tried enabling the boot logo (no fullscreen option though) in the motherboard’s BIOS/UEFI settings but it made no difference to me.
aestetically a graphical bootlogo is kinda nice though: you see zero text blabber until KDE plasmashell GUI is up - disabling plymouth gets rid of another gimmick of dubious utilitiy there.