[CentOS] xorg display problems

[Mike M]

I fixed it!

I booted up Knoppix (which uses xfree) for some hints.  I found that 
maybe be the horz/vert refresh rates needed ajusting.

Going back to CentOS, i found:
HorizSync    31.5 - 37.9
and and changed it to:
HorizSync    31.5 - 93

and changed:
Modes    "800x600" "640x480"
to:
Modes    "1024x768" "800x600" "640x480"

The key was to change the HorizSync to a wider range.  Just changing 
Modes to include 1024x768 was not sufficient.

The system is a laptop with an LCD screen.

--
Mike

Joshua Gimer wrote:
> Try adding 1024x768 in the modes under the Screen section. Then reboot and
> see if there is any change.
> 
> On 6/20/06, Mike M <linux-user at earthlink.net> wrote:
>>
>> Hi all,
>>
>> Up until today everything has been fine with CentOS on my Toshiba laptop.
>>
>> I booted into CentOS 4.3 today and Kudzu detected my video card for some
>> reason.  I let it configure it (wish I hadn't now).
>>
>> I can still get in. X and Gnome work.  But the video resolution is
>> 800x640.  The LCD is capable of 1024x768.  I cannot change it using
>> Gnome tools or direct editing of /etc/X11/xorg.conf
>>
>> With the Gnome "Display" system tool I cannot change the monitor to
>> "Generic LCD Display".
>>
>> Any help you can offer on getting the 1024x768 display mode to work
>> again would be appreciated.
>>
>> Here are the relevant sections from /etc/X11/xorg.conf
>>
>> Section "Monitor"
>>          Identifier   "Monitor0"
>>          VendorName   "Monitor Vendor"
>>          ModelName    "Unknown monitor"
>>          HorizSync    31.5 - 37.9
>>          VertRefresh  50.0 - 70.0
>>          Option      "dpms"
>> EndSection
>>
>> Section "Device"
>>          Identifier  "Videocard0"
>>          Driver      "i810"
>>          VendorName  "Videocard vendor"
>>          BoardName   "Intel 852"
>> EndSection
>>
>> Section "Screen"
>>          Identifier "Screen0"
>>          Device     "Videocard0"
>>          Monitor    "Monitor0"
>>          DefaultDepth     16
>>          SubSection "Display"
>>                  Viewport   0 0
>>                  Depth     16
>>                  Modes    "800x600" "640x480"
>>          EndSubSection
>> EndSection
>>
>> -- 
>> Mike
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>>
> 
> 
> 
> 
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