Display setting problem -

[Tom H]

On Mon, Nov 25, 2013 at 5:50 PM, Richard Sewill <rsewill at gmail.com> wrote:
>
> I hesitate trying to answer this question because what I am doing may be
> wrong.
>
> I tried the following on F18.
>
> I edited the line, found in file /etc/default/grub, which starts
> GRUB_CMDLINE_LINUX="rd.md=0 ... rhgb quiet"
> appending strings so it had
> GRUB_CMDLINE_LINUX="rd.md=0 ... rhgb quiet"
> drm_kms_helper.edid_firmware=edid/1024x768.bin video=VGA-1:e
>
> I next edited any existing lines in /boot/grub2/grub.cfg that had the string
> "rhgb quiet" to include the
> drm_kms_helper.edid_firmware=edid/1024x768.bin video=VGA-1:e
> string which I since learned is the wrong things to do.
>
> From my limited understanding, /boot/grub2/grub.cfg is auto-generated using
> /etc/default/grub each time /boot/grub2/grub.cfg is recreated.
> I should have used the grub2-mkconfig command instead of editing
> /boot/grub2/grub.cfg directly.

I can't comment about the actual options but they won't be included in
GRUB_CMDLINE_LINUX if you don't include them within the quotes as
you've done:

"rd.md=0 ... rhgb quiet"
drm_kms_helper.edid_firmware=edid/1024x768.bin video=VGA-1:e

You need:

"rd.md=0 ... rhgb quiet drm_kms_helper.edid_firmware=edid/1024x768.bin
video=VGA-1:e"