Custom (native) GRUB resolution not working | Linux For All | Page 1

analog haven Nov 16, 2022, 6:21 PM

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Have you tried changing it directly in the generated config or verifying that it is that resolution in the config generated?

unkempt sorrel Nov 16, 2022, 7:00 PM

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Did you also try the answer below it? Adding GRUB_GFXPAYLOAD="keep" to /etc/default/grub in addition?

unkempt sorrel Nov 16, 2022, 8:33 PM

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do you have a dgpu in your laptop?

unkempt sorrel Nov 16, 2022, 9:14 PM

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Well, not sure then. Perhaps a driver needs to be loaded for the full set of resolutions to be available. That is true about Nvidia cards, despite them reporting in grub that they can support larger resolutions.

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I'm not sure how to do that sort of in-depth grub tinkering.

hardy surge Nov 17, 2022, 8:33 PM

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Check if your arbitrarily specified resolution is actually a mode that is supported via VESA BIOS Extensions,

Only the modes supported by the graphics card via VESA BIOS Extensions can be used. To view the list of supported modes, install hwinfo and run hwinfo --framebuffer as root. Alternatively, enter the GRUB command line and run the command videoinfo.
https://wiki.archlinux.org/title/GRUB/Tips_and_tricks#Setting_the_framebuffer_resolution

Tips and tricks

#Custom (native) GRUB resolution not working