refresh rate too high on debian lenny w/ kde 3.5 on ati radeon hd 4850

mf93 · 08-04-2009, 03:32 PM

i recently built a new desktop. The specs are
gigabyte ultra durable motherboard
ati radeon HD 4850 video card
4gb 1066mHz ddr2 ram
amd Phenom 64 2.3ghz quad core processor

I installed the OS(debian lenny kernel 2.6.26 64bit with kde3.5) without an issue and it boots without a problem. However, once kdm starts, the monitor displays a "frequency too high" box that floats around the screen.
I ctrl+alt+f1 and the terminal works fine. I was wondering how to change the refresh rate from the terminal so that I could run kde.

also btw I checked my /etc/X11/xorg.conf file and ran the gtf utility to get a modeline to generate refresh rate:

Code:

MyPC:~# gtf 1024 768 70 -x

 # 1024x768 @ 70.00 Hz (GTF) hsync: 56.00 kHz; pclk: 76.16 Mhz
 Modeline "1024x768_70.00" 76.16 1024 1080 1192 1360  768 769 772 800 -HSync +Vsync

And my xorg.conf file looks like this

Code:

#all the code at the beginning...
Section "Monitor"
      Identifier      "Configured Monitor"
      #the code generated by gtf
End Section
#all the code afterwards

Any help would be greatly appreciated! thank you in advance!

Wim Sturkenboom · 08-05-2009, 08:06 AM

First question is what happens when you take the modeline out?

I would start by taking the modeline out and add the refresh rates (look them up in the manual of the monitor or on the internet) in the section monitor.

Code:

Section "Monitor"
#DisplaySize      320   240     # mm
Identifier   "Monitor0"
VendorName   "DEL"
ModelName    "DELL P790"
HorizSync    31.0 - 92.0
VertRefresh  50.0 - 150.0
Option      "DPMS"
EndSection

If that is not sufficient, we will look further. Can you let us know the make and model of the monitor (and maybe an indication of its age).

PS Not familiar with debeian, so can't say which tools are available fot configuration of X.

mf93 · 08-05-2009, 03:53 PM

with or without the Modeline I'm getting the frequency too high message so I took it out...
However atm I'm having a problem with the power supply so when I get that working I'll try your solution.
Thank your for replying though

mf93 · 08-05-2009, 03:57 PM

Also the monitor is an emachines E15T4 LCD...its about 7-8 years old and has a max refresh rate 70hz