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Old 11-23-2004, 06:44 AM   #1
Ermen
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Resolution, Please help


Ok this is what happend, I updated my kernel what means I had to setup my screen again or else X would not load. So I did there's only one problem;
I chose the wrong resolution and now everytime I startup Fedora 'videomode not supported' shows and I can't do anything. Can anyone tell me how I can change my resolution at startup? (so I see those green OK's and then nothing)

Thanks,

Ermen
 
Old 11-23-2004, 07:18 AM   #2
rjlee
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When you boot into Linux, type in
Code:
vga=ask
You will then be prompted for the video mode to use.
 
Old 11-23-2004, 07:22 AM   #3
Ermen
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Quote:
Originally posted by rjlee
When you boot into Linux, type in
Code:
vga=ask
You will then be prompted for the video mode to use.
Thanks, but when can I type that? He's checking everything and after that nothing
 
Old 11-23-2004, 07:45 AM   #4
rjlee
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At the boot prompt, which usually appears just after the BIOS checks, before loading the kernel.

Alternatively, you may have to boot into a rescue mode, and add it to your GRUB configuration or /etc/lilo.conf (depending on which you use), and then reinstall your boot-loader.
 
Old 11-23-2004, 08:02 AM   #5
Ermen
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Quote:
Originally posted by rjlee
At the boot prompt, which usually appears just after the BIOS checks, before loading the kernel.

Alternatively, you may have to boot into a rescue mode, and add it to your GRUB configuration or /etc/lilo.conf (depending on which you use), and then reinstall your boot-loader.
I Checked it out, In the bootloader i can choose a, e and i think o but when I Choose a, I get Grub>
and that's all, when I type vga=ask nothing happens.
 
Old 11-23-2004, 08:26 AM   #6
rjlee
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I don't use GRUB myself, but I think if you press e then you can edit the boot options. If you search google or tldp.org for grub then you'll find more detailed instructions.
 
Old 11-23-2004, 01:31 PM   #7
Ermen
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Solved it, if you press Ctrl+alt+f1 you'll get a terminal. Thanks for your time and trouble
 
Old 11-24-2004, 10:43 AM   #8
prisca43
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Unhappy unable to change resolution

I am a newbee and have same problem.
On installation of Fedora3, when I was asked some questions after starting for the first time, I chose the wrong resolution and now I cannot do anything, always have the message "cannot display this video mode, change computer display input to 1280x1024@60H2
81.30K / 65.04H2

For me all this is like "chinese" !!
I have a dual boot with winXP (that functions) and my video is a ATI Radeon 7500/7500 LE
Actual resolution in WinXP is 1024x786

I tried to do what is said in this thread, but nothing works for me....
please help, or I will never start really with linux !
 
Old 11-25-2004, 03:49 AM   #9
prisca43
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still no solution!

Quote:
Originally posted by rjlee
When you boot into Linux, type in
Code:
vga=ask
You will then be prompted for the video mode to use.
I tried this and got a list of possible video choices:

0 0F00 80X25
1 0F01 80X50
2 0F02 80X43
3 0F03 80X28
4 0F05 80X30
5 0F06 80X34
6 0F07 80X60
7 0309 132X25
8 030A 132X43
9 0330 132X44

I tried them ALL one after the other, but nothing changed
I still got a black screen with a moving label saying "cannot display tghis video mode, change computer display input to 1280x1024@60HZ 81.19 / 64.94 HZ

What can I do??
I tried to use the rescue disk... no succes
I tried to "reinstall" automatically, but it was refused, it did not want to delete linux disks.
I cannot afford to loose windows....
The dual boot with XP is still working....
can anyone help me and give me the "miracle" command line???
 
Old 11-27-2004, 05:36 PM   #10
rjlee
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It looks like your graphics card or display will not display text graphics modes. If so, then this is absolutely a hardware bug; text modes are required by all VESA standards for graphics cards.

You will need to determine what kind of graphics chipset you have, and then load the appropriate framebuffer device for that, from which you will (hopefully) be able to set the graphics mode.

You may be able to get this to work using the basic vesafb. Try with one of these: 0x307 0x319 0x31A 0x31B (these are 0x200 plus the VESA mode numbers for 1280x1024 at various colour depths).

It is apparantly normal for these not to be listed with vga=ask

Each one of these modes will set 60Hz; there's currently no way around this with vesafb. If it's picky enough to need the extra 4.94Hz, then you will have to determine your graphics chipset before anything can proceed.
 
  


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