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[solved] Grub boot menu screen unreadable

asked 2013-05-16 12:02:38 -0500

updated 2013-05-17 18:58:28 -0500

I've just, successfully, installed F18 alongside Win 7 on a Thinkpad T400. Clearly Grub is trying to show a boot menu, since I get different boot if I just press [Enter] or down arrow first). The problem is that the screen is mangled: shaded coloured lines with some dots.

It would be nice to be able to read this menu. Can the problem be fixed?

NB Once Fedora itself starts to load, the display is perfect.

Thanks,

Roger Beaumont

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answered 2013-05-17 08:09:41 -0500

wholevin gravatar image

updated 2013-05-17 08:11:57 -0500

You may want to edit your /etc/default/grub

I have 2 ideas:

  • Add a line with your resolution (whatever your monitor supports):
GRUB_GFXMODE=640X480
  • Experiment with GRUB_THEME. I'm guessing there's a commented out line with GRUB_THEME in there. Uncomment and see if your display is better (should be totally different and themed).
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I may have missed a step. After changing the resolution, try a:

sudo grub2-mkconfig

then reboot.

wholevin gravatar imagewholevin ( 2013-05-17 11:23:00 -0500 )edit

I've just tried that: still the same!

rogerb gravatar imagerogerb ( 2013-05-17 12:16:12 -0500 )edit
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answered 2013-05-17 10:20:31 -0500

updated 2013-05-17 18:59:44 -0500

Sorted!

Replace the graphic resolution with:

GRUB_TERMINAL=console

to disable graphics, and do

grub2-mkconfig -o /boot/grub2/grub.cfg

to activate that and hey presto - a visible menu!

Thanks to wholevin for all help offered,

roger

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You may want to move that to a comment of my answer since now it shows up as an answer to your question.

The location of the property in the file shouldn't matter. And honestly, they were a couple of shots in the dark. The rest of your file looks clean though. Did you install windows then fedora, or fedora then windows?

wholevin gravatar imagewholevin ( 2013-05-17 10:40:44 -0500 )edit

Windows was pre-installed. I first tried to install Linux Mint but couldn't sort out the networking so replaced that with Fedora.

rogerb gravatar imagerogerb ( 2013-05-17 12:10:14 -0500 )edit

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Asked: 2013-05-16 12:02:38 -0500

Seen: 2,506 times

Last updated: May 17 '13