Fedora Linux Support Community & Resources Center
  #1  
Old 29th May 2012, 09:59 PM
gr0undzer0 Offline
Registered User
 
Join Date: May 2012
Location: VA
Posts: 3
linuxchrome
Grub2 video issue after upgrade

I upgraded F16 to F17 using Preupgrade. I had absolutely no issue with the upgrade and the system boots. The problem is that when I should be seeing the boot loader I am now seeing "signal out of range" . The problem persists until the timer runs out and the default Kernel is picked.

I tried changing the resolution manually in grub.cfg
I also tried changing it in the grub.d folder under 00_Header

Either way the grub2 boot loader will not appear. I'd rather like to be able to see it. This was never a problem before the upgrade.

Any ideas? I saw a similar issue / thread but it was unresolved and I think it was released before f17 went gold.
Reply With Quote
  #2  
Old 30th May 2012, 01:27 PM
rwright Offline
Registered User
 
Join Date: May 2012
Location: Texas
Posts: 9
linuxfirefox
Re: Grub2 video issue after upgrade

See this post

[ DBelton Online
Registered User

Join Date: Aug 2009
Posts: 3,999
linuxfirefox
Re: Missing Grub Splash in F17
quick fix?

edit (as root user) /boot/grub2/grub.cfg and scroll down until you find this section:
Code:

if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm

Change the set gfxmode=auto line to set gfxmode=1280x1024

What happens is that it tries to set a video mode that the video card doesn't support. Anything higher than 1280x1024 is supported only if the hardware manufacturer decided to include it. The VESA standard only supports video modes up to 1280x1024.

If that fixes your issue, then you need to change /etc/default/grub so that it will set it properly if you ever run grub2-mkconfig ]

under general support in this forum, hope that it helps, it did for me.
Reply With Quote
  #3  
Old 30th May 2012, 03:20 PM
gr0undzer0 Offline
Registered User
 
Join Date: May 2012
Location: VA
Posts: 3
linuxchrome
Re: Grub2 video issue after upgrade

Ok I figured this out last night and want to thank all who posted responses. Editing the /etc/default/grub works but I assumed that it just wanted whatever resolution my monitor could handle. This was an incorrect assumption. When editing with the line

GRUB_GFXMODE=640x480

You have to make sure the resolution is supported by the monitor and the card. 1920x1080 is not supported here at least in my case. I should have tried alternate resolutions first.

Thanks for your help rwright

---------- Post added at 02:20 PM ---------- Previous post was at 02:19 PM ----------

Ok I figured this out last night and want to thank all who posted responses. Editing the /etc/default/grub works but I assumed that it just wanted whatever resolution my monitor could handle. This was an incorrect assumption. When editing with the line

GRUB_GFXMODE=640x480

You have to make sure the resolution is supported by the monitor and the card. 1920x1080 is not supported here at least in my case. I should have tried alternate resolutions first.

Thanks for your help rwright
Reply With Quote
  #4  
Old 31st May 2012, 10:05 AM
lmgutie Offline
Registered User
 
Join Date: Jul 2008
Posts: 60
linuxfirefox
Re: Grub2 video issue after upgrade

After adding GRUB_GFXMODE=640x480 to /etc/default/grub, you need to run:
grub2-mkconfig -o /boot/grub2/grub.cfg
This will also be run automatically next time yum adds a new kernel and /boot/grub2/grub.cfg is automatically updated
Reply With Quote
Reply

Tags
grub2, upgrade, video

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] Grub2, dev modifications from satndard grub2 install jakebpg Using Fedora 16 9th March 2012 09:39 AM
Grub2 Issue jan1024188 Using Fedora 1 16th November 2011 03:34 PM
Video out of range issue - fc12 upgrade iborg Installation, Upgrades and Live Media 0 10th May 2010 02:38 AM
MS-DOS 5 Upgrade Video Wayne Wibble 4 19th September 2007 07:33 AM
Multiple Video Card issue - original video card not detected easethan Hardware & Laptops 6 11th June 2005 03:47 AM


Current GMT-time: 11:42 (Monday, 29-12-2014)

TopSubscribe to XML RSS for all Threads in all ForumsFedoraForumDotOrg Archive
logo

All trademarks, and forum posts in this site are property of their respective owner(s).
FedoraForum.org is privately owned and is not directly sponsored by the Fedora Project or Red Hat, Inc.

Privacy Policy | Term of Use | Posting Guidelines | Archive | Contact Us | Founding Members

Powered by vBulletin® Copyright ©2000 - 2012, vBulletin Solutions, Inc.

FedoraForum is Powered by RedHat
...kwekwe C.B.D - Navarette Travel Photos - Restoran D'KL Photos - Lubowa Travel Photos