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#1 2009-02-08 20:15:29
- brazzmonkey
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- Registered: 2006-03-16
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changing frame buffer resolution in grub.conf... [SOLVED]
Hello there,
my monitor supports resolutions up to 1680x1050. At boot time my frame buffer resolution is currently set to 1280x1024 (vga=795 in /boot/grub/menu.lst). I would like to set it to a higher resolution, in order to preserve my screen aspect ratio (16/10).
It seems the highest FB supported resolution is 1440x900 (scan gives me code 348). A wiki article advises to add 512 to this number, so in my case it would be 860.
Alas, it doesn't work. What am I doing wrong??
thx.
Last edited by brazzmonkey (2009-02-08 20:27:58)
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#2 2009-02-08 20:27:34
- brazzmonkey
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
ok, I figured this out myself: vga=0x348 did the trick.
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#3 2009-02-09 20:15:29
- haxit
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
Doesn't work for me 
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#4 2009-02-09 22:43:44
- tim
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
vga=0x0369
works for me
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#5 2009-02-10 20:26:35
- haxit
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
vga=0x0369
works for me
Doesn't work either...
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#6 2009-02-10 20:47:41
- brazzmonkey
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
haxit, are you sure these modes are supported by your frame buffer ?
if you set a wrong value, you should be offered to scan for available modes. Then you'll get a list of those supported modes along with the corresponding codes (without "0x0" prefix).
I hope this helps.
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#7 2009-02-10 20:59:40
- brazzmonkey
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
Actually you can set vga=ask to the kernel line of /boot/grub/menu.lst, you'll be prompted to scan for available modes.
A few more tips in case you don't know them: while grub menu is displayed, hit "e" to edit an entry, chose the line you want to edit, hit "e" again, edit as required, validate (hit "Enter"), then hit "b" to boot the modified entry. Just my 2 cents.
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#8 2009-02-10 21:11:46
- tim
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
Edit: Removed.
Apparently I took a while to find a thread and submit ;-) so my suggestion ended up just a repeat of brazzmonkeys
Last edited by tim (2009-02-12 11:06:52)
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#9 2009-02-11 20:50:08
- haxit
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Re: changing frame buffer resolution in grub.conf... [SOLVED]
It worked before, but after a kernel upgrade then downgrade then upgrade it broke ;(
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