nvidia drivers cant bear a preentiv kernel !?

girafon

when i want my kernel to be pre-entiv, the emerge of nvidia driver says me that there are undifined references to pre-entiv.
any clue?

reves · Posted: Sat Aug 31, 2002 2:52 pm Post subject:

Could you post the entire error message? Is the error regarding the preemptive kernel. I had the nVidia drivers running with the Gentoo sources and preemption enabled and it runs with no problems. The exact error would be helpful
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Robert

girafon · Posted: Sat Aug 31, 2002 5:05 pm Post subject:

forget it.
i did it and it works.
maybe a mrproper forgotten
thanx.

kybber · Posted: Mon Sep 02, 2002 12:38 pm Post subject:

Hmm... I've been having some similar problems with the nvidia-driver. But after mproper'ing the kernel config and other cleanup I was able to compile it ok. However, when I reboot I get a failure to calculate dependencies at the point where modules are about to load. If I then remove preemtion from the kernel, the dependencies are correctly calculated again. I am currently using low-latency, but would be interested in getting preemtion working since it is quite possible that this laptop will be used for RT-specific tasks. So has anyone experienced my problem and found out what it's caused? I've tried to enable preemtion, recompile, make mrproper, redownload sources etc. several times, but it won't work. I'm using the gentoo-sources.

Uranus · Posted: Tue Sep 03, 2002 6:58 am Post subject:

wtf is preemptive anyway?

Houdini · Posted: Tue Sep 03, 2002 7:18 am Post subject:

The first thing google -> "preemptive kernel" comes up with answers the question:

Reformist · Guru Joined: 06 Oct 2002 Posts: 323

I've had huge problems with the preemptive kernel option, such that when I boot I cannot get nvidia's kernel drivers to load properly, nor alsa, and even vfat.o - they all give this error:

unresolved symbol preempt_schedule

Not sure what's up with that, seen this exact error and similar problems all over the board (and I mean all over). When I first saw this error I had no idea what was going on, and didn't even know I had the preemptive kernel option selected. After doing some researching, finding out what it was, and checking my menuconfig, there it was, selected. I'm rebuilding my kernel without it as we speak, will post how it goes (hopefully I can get back in X with sound again).
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-Phil Crosby

Reformist · Guru Joined: 06 Oct 2002 Posts: 323

Finally, the work! Yes!
I will wait for preemptive kernel anothe day =)

Althought I read that preemptive kernel is not needed/useful on workstations.
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-Phil Crosby

djs · Posted: Wed Jan 08, 2003 4:37 am Post subject: includes

perhaps all that's needed is to add an #include to some file in the nvidia source and recompile.

/djs

Reformist · Guru Joined: 06 Oct 2002 Posts: 323

Unfortunately that kernel option affects many of my other modules as well.
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-Phil Crosby

mickywicky · Posted: Wed Jan 08, 2003 9:26 pm Post subject:

My experience: preemtible kernels tend to panic, which the same kernel on the same system with low-latency instead doesn't. This is about the 2.4.x series, 2.6 should be better since the patch is now merged. Unless you really need it, low-latency is just as good and more stable (YMMV though).

Micky

kybber · Posted: Thu Jan 09, 2003 7:59 am Post subject:

I am currently using a preemptible kernel (gentoo-sources 2.4.19-r10) with no problems at all (nvidia, alsa etc. all load perfectly). My nvidia-kernel is version 1.0.3123-r2. I think I had to make mrproper before it would work (or I downloaded the kernel again - can't remember exactly).

mickywicky · Posted: Thu Jan 09, 2003 2:17 pm Post subject:

guess you've been luckier

Seriously though, I've used the preempt kernel patch over several versions and distros of the kernel/linux but it did panic occasionally, which never ocurred without the patch or with low-latency. Maybe it's what I do to my poor little helpless kernel??
Can't wait for 2.6 since it is merged there!