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Old 06-25-10, 10:39 PM   #1
konst
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Thumbs down 95% CPU usage with driver 256.35 ?!!

Why is this happening?!!

I'm using:
Gentoo hardened kernel 2.6.32 on amd64
Xorg version 1.8.1.901
I have 8 GB of RAM and AMD X2 2.6 Ghz cpu
I'm not using opengl or any opengl applications.
X resolution is 2500x1600.
My video card is 800 GTX with 768MB
I didn't have this problem with driver 195.35

This sucks! Any Nvidia employees have any answers or solutions?
Anyone else have any suggestions?
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Old 06-25-10, 10:50 PM   #2
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

Here is the nvidia-bug-report.log.gz
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File Type: gz nvidia-bug-report.log.gz (45.7 KB, 115 views)
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Old 06-25-10, 10:55 PM   #3
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

Here is the install log x11-drivers:nvidia-drivers-256.35:20100625-145530.log
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File Type: log x11-drivers:nvidia-drivers-256.35:20100625-145530.log (18.0 KB, 86 views)
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Old 06-26-10, 09:41 AM   #4
artem
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Default Re: 95% CPU usage with driver 256.35 ?!!

What is eating your CPU cycles?
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Old 06-26-10, 10:54 AM   #5
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by artem View Post
What is eating your CPU cycles?
The Xorg server is eating all the cycles.
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Old 06-27-10, 07:57 AM   #6
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

Switched to driver 195.36.24 and everything is back to normal in terms of CPU usage.

That is if you can call Xorg using 1GB of RAM for doing nothing normal.

Looks like the problem with the CPU usage is in the 256.35 driver.
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Old 06-27-10, 02:14 PM   #7
kwizart
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Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
[ 34784.837] (EE) NVIDIA(0): Failed to initialize the GLX module; please check in your X
[ 34784.837] (EE) NVIDIA(0): log file that the GLX module has been loaded in your X
[ 34784.837] (EE) NVIDIA(0): server, and that the module is the NVIDIA GLX module. If
[ 34784.837] (EE) NVIDIA(0): you continue to encounter problems, Please try
[ 34784.837] (EE) NVIDIA(0): reinstalling the NVIDIA driver.
So it seems that you have broken the driver install.
256.35 work very well with me.
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Old 06-27-10, 08:33 PM   #8
dimm0k
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Default Re: 95% CPU usage with driver 256.35 ?!!

256.35 is working well for me to, however it would seem the temperature of the GPU has gone up a bit with this release.
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Old 06-27-10, 09:22 PM   #9
stecklum
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Default Re: 95% CPU usage with driver 256.35 ?!!

My posting concerning the seemingly increased temperature seems to have been ignored by NVIDIA

http://www.nvnews.net/vbulletin/showthread.php?t=152199

It is just a flaw in the GUI version of nvidia-settings.
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Old 06-27-10, 10:29 PM   #10
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by kwizart View Post
So it seems that you have broken the driver install.
256.35 work very well with me.

I don't use the nvidia glx. Never did. It has nothing to do with the problem.
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Old 06-27-10, 11:30 PM   #11
alexmurray
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Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by konst View Post
I don't use the nvidia glx. Never did. It has nothing to do with the problem.
Yes it does - NVIDIA GLX IS THE BINARY DRIVER. If this fails to load, X will instead fall back to software rendering and hence all rendering is done in the CPU, not the GPU, and that is why you have 95% CPU usage. Fix the driver to load correctly and this will fix your 95% CPU usage issue.
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Old 06-27-10, 11:58 PM   #12
konst
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Default Re: 95% CPU usage with driver 256.35 ?!!

Quote:
Originally Posted by alexmurray View Post
Yes it does - NVIDIA GLX IS THE BINARY DRIVER. If this fails to load, X will instead fall back to software rendering and hence all rendering is done in the CPU, not the GPU, and that is why you have 95% CPU usage. Fix the driver to load correctly and this will fix your 95% CPU usage issue.
It's only for OpenGL. I don't use OpenGL apps or 3D desktop effects. Besides I switched to driver version 195.36.24 and glx still doesn't load but cpu usage is back to normal proving it's not the glx that's causing the problem.

I don't use the GLX module cause it's a security risk and since Nvidia won't release the source code for the driver or specs for the card then we won't know what potential security problems there are or how to fix them promptly.
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