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Old 04-04-06, 01:40 PM   #1
SirWalterRaleig
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Default PCIe Driver Support

In looking through the driver source code, I'm noticing that the kernel driver module doesn't make any PCIe-specific calls to enable the features you get with the faster bus. Not being a driver programmer myself, I'm pretty ignorant to the details of kernel-level programming, but in reading the PCIEBUS-HOWTO.txt that comes with 2.6 kernels, it talks about attaching to the PCI bridge via a call to pcie_port_service_register(), but it appears as though the current driver only makes calls to register with the native PCI bus. Will this be implemented in a future release, or am I barking up the wrong tree in the wrong forest here?
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Old 04-04-06, 05:43 PM   #2
Lithorus
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Default Re: PCIe Driver Support

Don't really think you need to make any specific calls to take advantage of the PCIexpress bus. AFAIK it's just a faster PCI bus.
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Old 04-05-06, 07:02 PM   #3
djzort
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Default Re: PCIe Driver Support

im still getting system reboots with the most recent drives when some agp specific calls are made.

in general, most commercial games for linux (and games through emulations - cedega, wine etc) will cause system reboots when they try to go to full screen 3d acceleration.

in unreal tournament, the problem was solved with...
http://www.nvnews.net/vbulletin/showthread.php?t=44967

Quote:
Simply open your ~/.ut2004/System/UT2004.ini and search the

[OpenGLDrv.OpenGLRenderDevice]

Section.

In this section find

VARSize=32

(I think it was 32) and change it to

VARSize=0
clearly, its probing the agp arperture size (or similar) which is causing a terrible crash.

PLEASE NVIDIA DEVELOPERS. FOR HEAVENS SAKE FIX THIS BUG SOON. SURELY YOU ARENT ALL WORKING ON AGP SYSTEMS.
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Old 04-05-06, 08:52 PM   #4
netllama
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Default Re: PCIe Driver Support

If you believe you're running into a bug, please post an nvidia-bug-report.log along with detailed instructions on how it can be reproduced.

Thanks,
Lonni
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Old 04-05-06, 09:00 PM   #5
djzort
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Default Re: PCIe Driver Support

there is no need, it has all been posted before but you have IGNORED my posts completely. i have poured an enormous amount of time into the situtation, and the bug is very reproducable and it would seem i know what is being called and causing the crash. i have attached serial consoles and run the kernel in debugging modes. its all been posted before. the same problem has occured with every driver increment in both ia32 and amd64

so you can understand that i am VERY sick of being ignored. so possibly im not as... pleasant to deal with.

you can see my original post bellow. it includes bug reports time and time again with various kernel versions, i also went as far as to install fedora core (with the same results). having found a solution for ut i moved back to debian. but the problem still remains in the drivers.

http://www.nvnews.net/vbulletin/showthread.php?t=56930

there is also another related thread here

http://www.nvnews.net/vbulletin/showthread.php?t=61220

Quote:
Originally Posted by netllama
If you believe you're running into a bug, please post an nvidia-bug-report.log along with detailed instructions on how it can be reproduced.

Thanks,
Lonni
when software probes for what would appear to be something agp specific (possibly the arpeture size) its causing a crash

it could be a hardware bug.

but im not sure why agp commands arent just ignored but the driver with a pci-e card.

does that make sense?

i would be more than happy to call you (from australia) and we can discuss the details over the phone. it may save some hassle.
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Old 04-06-06, 01:45 AM   #6
djzort
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Default Re: PCIe Driver Support

according to the ut2004 list on icculus.org

this is whats happening

...
Quote:
> could you confirm this? there could be a problem with my card
> > but this problem doesnt occur at all in windows.
> >
> > im under the impression that you should match that value to
> > your actual arpeture size

You wouldn't want to match that to your aperture size. You'll want to
set it to something a good deal less than the amount of VRAM you have,
since you still want to have a lot of room left for textures and
whatnot. VARSize sets the amount of memory that is allocated to the
GL_vertex_array_range extension.
so it would seem that 'GL_vertex_array_range extension' is at fault.
giving it a value causes crashes.

mr netllama, would you like me to post another bug report log? or have i now given you enough information and done enough leg work for you?

yes i could have a hardware problem, but surely i have now presented enough information for someone to be able to dig in and tidy it up

thanks for your prompt reply.
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Old 04-06-06, 04:50 AM   #7
djzort
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Default Re: PCIe Driver Support

heres another one
Attached Files
File Type: log nvidia-bug-report.log (91.4 KB, 147 views)
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Old 04-06-06, 04:01 PM   #8
netllama
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Default Re: PCIe Driver Support

djzort,
I've spent the past 10 minutes playing UT2004 in an Asus A8N-SLI system with 1.0-8178, GeForce 6600 GT (PCIE) running RHEL4 (x86), and didn't experience any instability.

I'm afraid that I don't have your motherboard available here, however the fact that this didn't reproduce in my system suggests that this may not be a driver bug, or at the very least, its not generic to any 6600GT PCIE card. Its possible that you're hitting some kind of BIOS bug, or there is a bad interaction between the hardware in your system.

A new driver will be released within the next few days. If this is a driver bug, its possible that it was unknowingly fixed.

Thanks,
Lonni
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Old 04-07-06, 06:09 AM   #9
brewt
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Default Re: PCIe Driver Support

Quote:
Originally Posted by djzort
im still getting system reboots with the most recent drives when some agp specific calls are made.
Nice job hijacking someone elses thread...
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Old 04-07-06, 09:07 PM   #10
djzort
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Default Re: PCIe Driver Support

Quote:
Originally Posted by brewt
Nice job hijacking someone elses thread...
oh well.
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Old 04-08-06, 03:14 AM   #11
djzort
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Default Re: PCIe Driver Support

problem may have been fixed

i wacked on another bios update, i also removed the 'option nvagp 0' option

i have put varsize=0 up to 32, and now 64 and things seem to be ok.

so, it could be either.

if agp is turned off with pcie, is that going to cause crashes? netllama, care to give it a whirl on your test machine. that is, add 'option nvagp 0', start xorg and try ut
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Old 04-08-06, 03:17 AM   #12
djzort
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Default Re: PCIe Driver Support

heres the bug log thingy, the driver isnt the latest as its still yet to come through from the normal debian sources.
Attached Files
File Type: log nvidia-bug-report.log (91.8 KB, 129 views)
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