GeForce4; can not get full resolution.

[juls4]

I have a Samsung syncmaster 225uw with a default resolution of 1680x1050, however the maximum I can get is 1280x1024 which is annoying. Under windows I can get full resolution no problems.

System info:
Ubuntu 9.04 RC
don@office:~$ uname -r
2.6.28-11-generic
don@office:~$


video card info
don@office:~$ lspci | grep VGA
02:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 440 AGP 8x] (rev a2)


NVIDA driver version (installed via ubuntu's restricted driver application): 96.43.10

What I've done to try to solve it: I've used xrandr (and gtf) to make and enter a new modeline, but i end up with an error:

don@office:~$ gtf 1680 1050 60

# 1680x1050 @ 60.00 Hz (GTF) hsync: 65.22 kHz; pclk: 147.14 MHz
Modeline "1680x1050_60.00" 147.14 1680 1784 1968 2256 1050 1051 1054 1087 -HSync +Vsync

don@office:~$ xrandr --newmode "1680x1050_60.00" 147.14 1680 1784 1968 2256 1050 1051 1054 1087 -HSync +Vsync
don@office:~$ xrandr --addmode default 1680x1050_60.00
don@office:~$ xrandr --output default --mode 1680x1050_60.00
xrandr: Configure crtc 0 failed
don@office:~$

Can someone help with this please?
I've tried everywhere/everything...
Many thanks.

[papibe]

Hi juls4,

I had a similar problem with a Geforce4 440 Go in my Toshiba Satellite. Most people are able to solve their problem just "finding" the right modeline, but not in my case.

After lots of research I found something to solve my problem:

http://blog.freshnewpage.com/2008/04/26/nvidia-geforce4-420-go-on-ubuntu-804-hardy-heron/#comment-406

There are a few bunch of cases where the actual size of the display is read incorrectly because of corrupted data (don't know weather from the display or the card itself).

Try following the steps in the link above and check is your problem is caused by this. That is, installing read-edid, obtaining the edid info from the Nvidia X Serving settings, and checking the file with parse-edid.

I hope you can solve your problem.