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Bug 257813 - Suggest to disable AGPGART when possible when user has a PCI-Express card
Summary: Suggest to disable AGPGART when possible when user has a PCI-Express card
Status: RESOLVED WONTFIX
Alias: None
Product: [OLD] Docs on www.gentoo.org
Classification: Unclassified
Component: Other documents (show other bugs)
Hardware: All Linux
: High enhancement (vote)
Assignee: Docs Team
URL: http://www.gentoo.org/doc/en/nvidia-g...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-02-05 19:37 UTC by Pacho Ramos
Modified: 2009-02-11 10:48 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---


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Description Pacho Ramos gentoo-dev 2009-02-05 19:37:31 UTC
As can be read in:
http://www.nvnews.net/vbulletin/showpost.php?p=1534172&postcount=3

"Neither AGPGART nor NvAGP will be used on PCI-E systems. If your kernel was built with AGPGART, the NVIDIA kernel module will depend on the AGPGART frontend, but no backend drivers will be used."

Then, I think that this could be added to the guide for preventing people from building stuff that won't use if possible (this seems to be possible at least under x86, I am still trying to find the way for disabling it under amd64...)

Thanks a lot :-)

Reproducible: Always
Comment 1 nm (RETIRED) gentoo-dev 2009-02-11 08:44:21 UTC
No real need to do anything about this -- it doesn't hurt it if you somehow manage to activate it, and the kernel does setup a GART of some kind anyway.

And anyway, it can't be disabled on amd64, and since all motherboards with PCI-e slots for graphics *are* 64-bit...
Comment 2 Pacho Ramos gentoo-dev 2009-02-11 08:53:31 UTC
Seems that agpgart can be disabled under amd64 if choosing CONFIG_EMBEDDED=y

Also, my asus laptop has a 32 bits processor and it has a pci express card :-/, maybe I am missing something

Comment 3 Jan Kundrát (RETIRED) gentoo-dev 2009-02-11 10:48:43 UTC
(In reply to comment #1)
> And anyway, it can't be disabled on amd64, and since all motherboards with
> PCI-e slots for graphics *are* 64-bit...

That's not true, my Thinkpad T60 2007-FRG has a 32-bit Intel Core (Yonah) CPU with PCI-Express devices.