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Old 07-13-04, 07:12 PM   #1
asg
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Join Date: Nov 2002
Posts: 4
Question NVRM: restoring bus mastering

Hi to all. I would appreciate some help in the following issue. Please excuse my bad english.

I'm running Fedora Core 2 with Gnome 2.6 on a P4 machine with NVidia GeForce 4 MX420 video card. At some point (I think after running MPlayer) it takes quite a while to open new programs in X (up to 2 minutes sometimes), I mean new gedit or xterm, not CPU or memory intensive ones. I get the following message on the first text console:

NVRM: restoring bus mastering! (/tmp/selfgz2250/NVIDIA-Linux-x86-1.0-6106-pkg1/usr/src/nv/nv.c:2146)

Actually this file is not on my disk

I'm not sure whether this is the problem, but I'd like to know what this message means anyway. I also get an error in my Xorg.0.log file (see attachments)

My machine:
- video card: NVidia GeForce 4 MX 420
- driver version: 1.0-6106
- distribution: Fedora Core 2 with all updates except kernel
- kernel version: 2.6.6-1.435
- video BIOS version: 04.17.00.45.af
- CPU: Pentium 4 at 2.4 GHz
- motherboard: Intel 845PE
- RAM: 256 MB (518 MB swap partition)

Thank you in advance
Attached Files
File Type: txt Xorg.0.log.txt (27.0 KB, 121 views)
File Type: txt xorg.conf.txt (2.7 KB, 107 views)
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Old 07-14-04, 04:58 AM   #2
Thunderbird
 
Join Date: Jul 2002
Location: Netherlands, Europe
Posts: 2,105
Default Re: NVRM: restoring bus mastering

First the normal X problems. It seems that the GLX portion of the nvidia drivers isn't used at the moment because there are some xorg/mesa files left on your system. The first thing to do is "updatedb" and then delete all files like libGL.*, libGLcore.* and libglx.* (find them using locate). Don't delete files with different names like "libGLU.*. After that is done reinstall the nvidia drivers and edit your X configuration file. In it remove lines like Load "GLcore" and Load "dri".

That NVRM error is I think not really an error. It is just a message from the nvidia kernel module. The file it mentions is just the source file where this message was created in combination with the line number.

Personally I think the slowdowns on your system are caused by the fact that you don't have very much system memory (only 256MB). When your system is slow it is likely using a lot of SWAP memory (swap is lets say 1000x slower than ram). Monitor what happens using "top" at times your system is slow.
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Old 08-05-04, 03:28 PM   #3
kgroombr
Using Linux Since 1995
 
Join Date: Sep 2002
Posts: 130
Default Re: NVRM: restoring bus mastering

I just started having system hangs and I found entries in my /var/log/messages file like this:

Aug 5 15:14:56 buttercup NVRM: restoring bus mastering! (/tmp/selfgz6563/NVIDIA-Linux-x86-1.0-6106-pkg1/usr/src/nv/nv.c:2146)

These messages are in my log file at the exact same time as my system hangs, so this is definately related to these.

This is the first time I have ever seen this. Not sure what is causing it. but a google search found this link. Anybody else experienced this and found a solution?

Thanks,
Ken
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