Display Resolution Problem

Jack Lauman jlauman at nwcascades.com
Tue Apr 14 05:00:31 UTC 2009


I'd be happy with the 80x25 characters if it would actually fill the 
screen. I have 3 Compag laptops this is the newwst and the only one that 
behaves this way.

For some reason the screen doesn't fill up it ends up centered and uses 
only about 1/3 of the available screen area.

I'm not sure what's causing it.

Thanks,

Jack

Richard Shaw wrote:
> On Mon, Apr 13, 2009 at 9:14 PM, Kam Leo <kam.leo at gmail.com> wrote:
>> On Mon, Apr 13, 2009 at 3:06 PM, Jack Lauman <jlauman at nwcascades.com> wrote:
>>> I have a Compaq Presario 2500 (Model No: 2525US)
>>>
>>> When booting into run level 3 (command line) on Fedora 9 the video occupies
>>> less than 2/3 of the total screen. Using startx to launch xwindows works
>>> fine and uses the full screen.
>>>
>>> Is there a way to control the screen size in run level 3?
>>>
>>> Thanks,
>>>
>>> Jack
>> Default runlevel 3 console screen is 80x25 characters.  If you have
>> lines of text 132 characters wide then you are at the maximum
>> supported, 132x40 characters.
>>
>> Here is a table of values courtesy of LinuxQuestions.org,
>> http://www.linuxquestions.org/blog/archtoad6-147095/2007/12/29/vga-resolution-codes-for-grub-and-lilo-830/
>>
>>  VGA Resolution Codes for GRUB & Lilo
>> --- Depth --
>> Colors  bits  640x480  800×600  1024×768  1152×864  1280×1024  1600×1200
>>   256    8   vga=769  vga=771   vga=773   vga=353   vga=775    vga=796
>>  32000    ?   vga=784  vga=787   vga=790   vga= ?    vga=793    vga= ?
>>  65000   16   vga=785  vga=788   vga=791   vga=355   vga=794    vga=798
>>  16.7M   24   vga=786  vga=789   vga=792   vga=795   vga=799
>>
>> Try appending one of the settings ("vga=value") to kernel line in grub
>> to optimize viewing the screen.
> 
> Another option is to have the kernel tell you what modes your chipset
> and display support. When you get to GRUB edit your kernel line and
> append "vga=ask" to it. When you reboot it will give you a list of
> supported modes. You can type in the 3 digit number to try a mode or
> type SCAN to see if it can detect additional modes. Once you find one
> you like, change the "ask" portion to the number of the mode but be
> sure to put "0x" in front of it.
> 
> For example, on my desktop I use 1024x768 and I believe that's 318 so
> I would append "vga=0x318" to the kernel line in grub.
> 
> Richard
> 
> 
> 
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