Arch Linux

stillinbeta

Member

Registered: 2011-01-10

Posts: 6

Grub2 fails to render higher resolutions

I just did a reinstallation of Arch and I can't get grub2 to work at my LCD's native resolution (1440x900). 1024x768 works fine, but native resolutions (as well as auto) produce garbage on the display.

My laptop has a Intel 4500MHD integrated graphics chip.
KMS works fine after grub has finished loading, and the boot process takes place at full native resolution.

I have my old /etc/default/grub and /etc/grub.d/, and there aren't any noticeable differences between the two. I can't remember if I did anything else to make the resolution work the last time I installed grub2.

Any thoughts?

guelfi

Member

From: /home/guelfi

Registered: 2011-07-01

Posts: 111

Re: Grub2 fails to render higher resolutions

https://wiki.archlinux.org/index.php/Gr … resolution

In the bootloader stage, you can't just use arbitrary resolutions, but only those which are supported by the BIOS. Unfortunately, the native resolution of laptop screens is not always one of these.

stillinbeta

Member

Registered: 2011-01-10

Posts: 6

Re: Grub2 fails to render higher resolutions

I ran vbeinfo from within grub, and 1440x900 is indeed a (supposedly) supported resolution. Also it must have worked with some version of grub2 at some point, or I wouldn't have been able to have it working with my last installation.

Here's the output of vbeinfo (sorry about the cell phone picture, couldn't think of any other way to do it).

The 1024x768s are farther down from there.