Latest LQ Deal: Linux Power User Bundle
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 08-27-2013, 07:59 PM   #1
LQ Newbie
Registered: Feb 2008
Location: Gatineau Qc
Distribution: Ubuntu
Posts: 9

Rep: Reputation: 0
VGA Boot modes to set screen resolution
I used vga=771 to live boot with a Radeon hd6450 video card. I do not understand why this fixed it.
Old 08-28-2013, 07:25 AM   #2
Registered: Dec 2012
Posts: 75

Rep: Reputation: Disabled
Generally you don't need the vga kernel parameter anymore since nowadays KMS (kernel mode setting) is the default and usually sets the optimal screen resolution by itself.

The only case I know in which you need the vga kernel parameter is if you're using a Radeon video card with fglrx, since this driver still doesn't support KMS.

In this case you can find out the correct value for your card and monitor by setting vga=ask. When you have chosen the correct resolution you can change vga=ask to vga=<chosen value>. Keep in mind that it can take decimal and hexadecimal values. From the table you linked to you can set either vga=795 or vga=0x31b for getting 1280x1024-24. As far as I know vga=ask usually gives you the hexadecimal values.
Old 08-28-2013, 08:39 PM   #3
LQ Newbie
Registered: Feb 2008
Location: Gatineau Qc
Distribution: Ubuntu
Posts: 9

Original Poster
Rep: Reputation: 0
Thanks, I'll stick with what I have right now as it does work and it took me a long time to find it. Ian.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
screen resolution set too high, now i get a black screen strangerklone Linux - Newbie 3 05-22-2009 05:43 AM
Lilo vga modes? fmarzocca Debian 13 08-01-2006 07:07 AM
Black Screen after changing vga resolution qakhan78 Red Hat 2 04-12-2005 09:51 AM
How to change / set screen resolution during boot lumkichi Linux - Newbie 3 02-11-2004 09:38 AM
Changing the refreshrate for vga/vbe video modes akqw Linux - Software 1 05-25-2003 11:06 AM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 02:37 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration