Display setting problem -

[Bob Goodwin - Zuni, Virginia, USA]

On 25/11/13 12:50, Richard Sewill 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 got this idea reading
> https://wiki.archlinux.org/index.php/Kernel_Mode_Setting#Forcing_modes_and_EDID
> and
> https://www.osadl.org/Single-View.111+M5b7fe294ea7.0.html
>
> In my case I wish to run a headless server, but wish to have Linux 
> believe there is a certain size window if I vnc into the server using 
> x11vnc on the server.
> My vnc client happens to run on a laptop with a screen size, 1024x768.
>
> I do not know if you need the video=VGA-1:e because you indicated you 
> have a monitor connected.
> I do not know if you can use one of the four standard timings that are 
> hard-coded in the driver.
> Please note: there are notes saying this works only with certain drivers.
> I am using the nouveau driver.
> I don't know if this works if you are using the nvidia driver; a note 
> in one of the URLs said it did not work with the nvidia driver at one 
> time.
>
> Please save any files before editing.  You and I don't know if this 
> will work for you.  It's best to play it safe and have backups just in 
> case.


Thanks for your thoughts. This may work but I am hesitant to go too far 
in experimenting for fear of not being able to boot the computer which 
is always a bother ... What I have works, I was hoping someone knew of a 
better way that had worked for them.

Bob

-- 
http://www.qrz.com/db/W2BOD
Box 10 Fedora-19/64 XFCE Linux