GeFORCE MX freezes running OpenGL applications
 

Hi,

I have an issue with my nvidia geforce mx 4000 VGA card. I had already posted regarding this in the linux-software forum. However, i did not receive any solution.

Here is the link to that post: http://www.linuxquestions.org/questi...d.php?t=439252

Please help me. Here is the link to my bug-report log file.

http://www.freewebs.com/onlinechandr...g%2Dreport.log

Have you tried reporting the isue to the nvidia forum.
There is unlikely to be a resolution to this: the nvidia driver is closed source.
You may like to read the sticky at the top of the fedora subforum (not directly you I know) to see what sort of thing could have happened when you ran the nvidia installer.

I've been having the same issue under fedora - openGL apps hanging - and AFAIK there is no solution other than to stop using nvidia. (Fedora has special packages. Don't know about slackware.)

What do u mean by that?? Is there any patch for this available in Fedora??

I have sent a bug report to nvidia. What kind of response do I expect from them?? I can't throw the card away as it is a new one.

Is it this problem? If it is or if it's something similar then take a look through that thread; lots of people have had freezes and found various ways to get around them.

i had a similar issue and found that lowering the AGP from 8x to 4x stopped it.

Could u plz shed some more light on how u reduced from 8x to 4x??

Do u mean recompiling the driver by changing the variable values??

I have a 4x AGP slot in my mother board. My nvidia-settings -q all says the rate is 4x. Do I still need to change it??

Also, I tried to use the nvidia AGP instead of agpgart. I disabled agpgart from loading at startup and changed the "NvAGP" option to "1". But I still find that the agpgart module is loaded when X starts. Could u help me to avoid agpgart and load NvAGP instead?

You'd change the value in the BIOS but if it's 4x already it probably wouldn't make any difference. You could always see if it can go lower though.

Chances are agpgart is either compiled into your kernel (in which case you can't stop it loading without recompiling the kernel) or somewhere in your init scripts there's a 'modprobe agpgart' line that can be hashed out.

However, there might be other modules which depend on this. You'd be best to try 'rmmod agpgart' (as root) and see if you get any complaints about module dependencies.

NB. i tried loading the NvAGP module instead and it didn't make any difference.

Thanx for your suggestions I'd try completely disabling AGP and get back to u soon.

BTW, I have a module called via_agp, which depends on agpgart. Regarding bug report to nVIDIA, will I get any reply for it?

Also, what was the actual rate of ur AGP slot? Was it 8x and you manually reduced it to 4x?

i've never actually sent a bug report to Nvidia so i couldn't comment. There are users in that thread who mentioned that they did get replies of a "we're looking into it" sort though.

Yes, my AGP slot was an 8x and manually reducing it to 4x in the BIOS fixed it. NB. Since upgrading to a 6600GT i haven't had this problem, even at 8x.

i think i had to rmmod both agpgart and via_agp (and another one), then restart X with NvAGP set to '1' before NvAGP was actually loaded. As i say though, i still had the same problem afterwards.

Lowering the AGP rate in the BIOS did not work. However, disabling AGP in xorg.conf worked.

I added the following line to "Device" section of xorg.conf.
That seems to work the system never crashed after that.

Could some hardware guru please explain what it means when I say AGP is disabled. The nVIDIA README file says that AGP is disabled when the above option is specified.

Hmmm.... interesting, my BIOS has no facility to altering anything in AGP - only to select this before the onboard VGA card.

I too would be interested in what it means to "enable" or "disbale" AGP - it looks like it refers to using the BIOS/onboard graphics acceleration support instead of (for eg) that supplied on the nvidia card? Or could it be like memory clock speed...

Disabling could use only what the card asks for instead of trying to help it.

No BIOS work only xorg.conf
 

It has got nothing to with the BIOS settings. It is just a modification to the xorg.conf file.

I think that the nVIDIA driver looks at this option acts accordingly.

Could someone shed some light on how the agp is disabled and what it means?