[Intel-gfx] Lenovo X60 with i945: Setting resolution in GRUB to 1024×768

[Felix Miata]

Paul Menzel composed on 2015-01-18 12:20 (UTC+0100):

> on the Lenovo X60 with i945 graphics (and vendor BIOS), for using
> fastboot, that means to avoid a modeset, I want to set the desired
> resolution in GRUB using the option `GRUB_GFXMODE=1024x768` in
> `/etc/default/grub`.

Making a change in /etc/default/grub does not take effect until the actual
Grub menu is rebuilt. It's a config file, not a menu file.

> Unfortunately that does not have an effect and the
> resolution is only 640×480.

IIRC, I've solved this problem in the distant past by in BIOS setup changing
memory size reserved for video controller from 1M to 8M.

> The GRUB developer told me that this is likely a Video BIOS issue.

> Am I out of luck or do you know of possible solutions or do you have
> pointers how to debug this? GRUB’s `vbeinfo` lists the resolution of
> 1024×768.

GRUB_GFXMODE=1024x768 assumes you are using Grub2. In Grub legacy what you
need is video=1024x768 or video=1024x768 at 60 on the kernel cmdline. I have
multiple i945G systems using both vga=1024x768 at 60 and Grub Legacy, but none
Lenovo.

Which distro are you using?
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