Resolution Problem

[Peddy]

After installing the latest (and previous) drivers released, they install fine, and run perfect :)

But one problem I have, which I find rather annoying, is that I cannot use 1280x1024 graphics resolution using NVidia drivers. Using generic drivers that came with my dist (nv) I can use that resolution fine.

My setup is:
RedHat 8
GeForce4 Ti 4200 with AGP8X (0x0281)
LW-871 17" TFT

I understand that 1280x1024 is the optimal resolution on 17" TFT monitors, and anything below that looks 'blurry'. I've tried editting the xf86Config file, but its just ignores my editing.

If anyone can help, I'd appreciate it greatly.
Matt

[Wolfman [TWP]]

Have you played with the Horizontal & Vertical settings in the XF68Config file. As these values (Which relate to your monitor specs) goven the resolutions you can choose.

Check the manual of your TFT monitor and update those settings and it will work. (Check the specifications section of the manual. If you don't have the manual then check out the manufacterer's website, they SHOULD have the monitor's spec's there)

Wolf

[Peddy]

Cheers, I'll look right into it

[Peddy]

Ok, I increased the horizontal and vertical frequencies which enabled me to select a higher resolution, but even thou I could select 1280x1024 it still wouldn't display at that resolution. Instead it displays at 1280x960 with frequency problems (not syncing properly I think, I'm not very knowledgable with all this) with a h/v freq of 60x60. I pressume 17" TFT's can't display at 1280x960.

It seems my TFT is 'cheap' or non-branded. The model number (according to the sticker on the back of the TFT) is 'LW-871'. But according to the supplier of the TFT (and the manufacturer) the model number is '17MXA ' If you visit the manufacturer's website (http://www.firsteuroservice.com) You can download the 'so called' manual, but it appears that it isn't the manual atall, its for a 15" TFT instead.

So I'm not really sure where to go from here, but it must be possible due to the generic drivers from my dist being able to do it.

Thanks for any help,
Matt

[Andy Mecham]

Try the UseEdidFreqs option - add
Option "UseEdidFreqs" "1"
to the Device section of your XF86Config file.

--andy

[Peddy]

Thanks, I did see this in the readme of the new drivers, but because of my lack of knowledge in this department, I didn't really want to tamper without knowing exactly what I was doing.

If anyones curious, I found specs to my TFT here:
http://www.falcon.home.pl/17MXA.htm

Thanks again,
Matt

[Peddy]

No luck I'm afraid. I've attached my original XF86Config file and the current one I use to try and get this to work, hopefully someone can figure it out for me.

Also, is there anyway to force a resolution onto the driver? (if that makes sense)

Cheers,
Matt

[Wolfman [TWP]]

This might be just a stab in the dark (So to speak), try changing the following two lines from:

HorizSync 24.0 - 80.0
VertRefresh 50.0 - 85.0

to:

HorizSync 24-80
VertRefresh 50-85

As I've noticed from all the XF86Config files I've seen (Including mine), there were no spaces in this area. So it may be worth while removing them to see if it will work any better this way.

Wolf

Just checking your monitor specs, indicate that the two lines shoud read:

HorizSync 24-91
VertRefresh 50-85

[subnova]

Peddy:
what drivers did you use. ???

[Peddy]

The latest NVidia ones for the graphics, but for the monitor linux is unable to probe my monitor, so I just use a generic monitor driver.

Matt

[Peddy]

Nope, no luck again. Its seems whatever I do, it still displays at 1280x960 (or whatever) which doesn't work on my monitor. Windows XP (parden my language) works fine at 1280x1024 with a v/h freq of 60.0/64.0. So is there anyway I can force the linux drivers to output this settings?

So now I'm stumped
Matt

[Andy Mecham]

Yes - you'll need to write a custom modeline. 'gtf', included with XFree 4.3, will help you do this.

--andy

[Peddy]

argh, how do I do that?

Matt

[bwkaz]

gtf

This will show you the usage of the gtf program.

[Peddy]

Could someone give me a link to a site which explains what 'gtf' is, and how to use it? I don't know how to run it, etc.

Sorry for all the questions,
Matt

EDIT: It seems I don't have the latest version of Xfree, which is needed for using 'gtf'. I havn't a clue how to update it. I'm new to all this =/