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Tasklist

FS#13009 - Grub - VGA parameter table - strange behaviour of kernel vga parameter

Attached to Project: Arch Linux
Opened by Vladislav Guberinic (neosisani) - Tuesday, 27 January 2009, 18:56 GMT
Last edited by Aaron Griffin (phrakture) - Tuesday, 27 January 2009, 19:59 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To No-one
Architecture All
Severity Low
Priority Normal
Reported Version None
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
/boot/grub/menu.lst gives a table of vga modes and as example
# TIP: If you want a 1024x768 framebuffer, add "vga=773" to your kernel line.

However in my case vga=795 doesn't work, nor does vga=0x31B. However passing vga=31B seems to work.

Also, part of irc session from ##kernel @ freenode
<neosisani> does kernel vga parameter (at boot) accept hex or decimal value? (eg should i type vga=795 or vga=31B)
<j_eng> strange as it is, the values are hex even without a leading 0x prefix

Additional info:
* package version(s)
grub 0.97-15

Steps to reproduce:
try a few vga parameters for kernel (eg vga=795)
This task depends upon

Closed by  Aaron Griffin (phrakture)
Tuesday, 27 January 2009, 19:59 GMT
Reason for closing:  Not a bug
Comment by Aaron Griffin (phrakture) - Tuesday, 27 January 2009, 19:03 GMT
795 may be out of range for your system. 773 and 791 work fine on my system. Try a lower resolution or lower color depth. I'm sure the decimal numbers work fine, they just may be out of range for your hardware
Comment by Vladislav Guberinic (neosisani) - Tuesday, 27 January 2009, 19:50 GMT
Fixed it. 31b actually booted 1024 resolution.

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