Nouveau - Jan 2014 - Should I dump my Nvidia card from the less known brand "Gainward"?

Hi everyone.


I'm a big Free Software enthusiast and, therefore, I would very much like to
use the nouveau free driver, instead of the proprietary one.

My problem is that, looking for the cheapest option available, when I needed to
buy a new graphics card, 2 years ago, I decided for a model from a brand that I
had never heard of - called "Gainward" - because I thought it had a
better price/quality relationship than its ASUS equivalent with the same Nvidia
chip.

My specific graphics cards is this one:
http://www.gainward.com/main/product/vga/pro/p00472/p00472_datasheet_17204da7fe6add60c.pdf?s=125

Because I used to use a not completely free GNU/Linux distribution at the time,
where one could easily install the proprietary driver, right after installing
the distro, I've always run this last driver on it, and managed to find a
version where it would run well.

But, now wanting to migrate to a completely free GNU/Linux distribution, I now
notice better the problem that I have, with this specific graphics card, where I
can't even make the nouveau drivers run on it, let alone run well...

I've already made several tests, with different kernels, and there's
really no way that I can make this graphics card work with the nouveau driver.
(My results here:
http://trisquel.info/en/forum/nouveau-mi-eq-overflowing#comment-43762) And, the
problem that appears, is what is listed here:
http://trisquel.info/en/forum/nouveau-mi-eq-overflowing

And, after learning, in this mailing-list, that people who use this card's
ASUS equivalent with the same Nvidia chip, don't have any of the problems
that I have, I now know that this is a particular type/brand of card, or
particular graphics card, that is not currently supported by the nouveau driver.


So, my question is...

Knowing that Free Software is mainly developed to run on the most used type of
computer components, and not being, apparently, my graphics card, one of this
type of most used components, do the people here, in this mailing-list, know if,
or think that, there's ever going to be some effort made to make the nouveau
driver run on the type of graphics card that I have?

(What I want to know, in practical terms, is if it's worth keeping this
graphics card for some possible use in the Future, when it will be supported, or
if it's better for me to just sell it to someone who's not as interested
as me in using only Free Software?)


Thank you, all, in advance, for your answers.

And thank you very much, also, all of you, for the *great results* that I've
already witnessed on other graphics cards.
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On 10/01/14 12:36, Fernando Negro wrote:
>  Hi everyone.
> 
Hi Fernando,
> 
> I'm a big Free Software enthusiast and, therefore, I would very much
like to use the nouveau free driver, instead of the proprietary one.
> 
> My problem is that, looking for the cheapest option available, when I
needed to buy a new graphics card, 2 years ago, I decided for a model from a
brand that I had never heard of - called "Gainward" - because I
thought it had a better price/quality relationship than its ASUS equivalent with
the same Nvidia chip.
> 
> My specific graphics cards is this one:
http://www.gainward.com/main/product/vga/pro/p00472/p00472_datasheet_17204da7fe6add60c.pdf?s=125
> 
> Because I used to use a not completely free GNU/Linux distribution at the
time, where one could easily install the proprietary driver, right after
installing the distro, I've always run this last driver on it, and managed
to find a version where it would run well.
> 
> But, now wanting to migrate to a completely free GNU/Linux distribution, I
now notice better the problem that I have, with this specific graphics card,
where I can't even make the nouveau drivers run on it, let alone run well...
> 
> I've already made several tests, with different kernels, and
there's really no way that I can make this graphics card work with the
nouveau driver. (My results here:
http://trisquel.info/en/forum/nouveau-mi-eq-overflowing#comment-43762) And, the
problem that appears, is what is listed here:
http://trisquel.info/en/forum/nouveau-mi-eq-overflowing
> 
> And, after learning, in this mailing-list, that people who use this
card's ASUS equivalent with the same Nvidia chip, don't have any of the
problems that I have, I now know that this is a particular type/brand of card,
or particular graphics card, that is not currently supported by the nouveau
driver.
> 
> 
> So, my question is...
> 
> Knowing that Free Software is mainly developed to run on the most used type
of computer components, and not being, apparently, my graphics card, one of this
type of most used components, do the people here, in this mailing-list, know if,
or think that, there's ever going to be some effort made to make the nouveau
driver run on the type of graphics card that I have?
> 
> (What I want to know, in practical terms, is if it's worth keeping this
graphics card for some possible use in the Future, when it will be supported, or
if it's better for me to just sell it to someone who's not as interested
as me in using only Free Software?)
> 
> 
> Thank you, all, in advance, for your answers.
> 
> And thank you very much, also, all of you, for the *great results* that
I've already witnessed on other graphics cards.
> 
Now that was a lengthy email :)

With that said as most people working on nouveau are
volunteers/hobbyists and as such we tend to work on what interests us.

This does not mean that noone will _ever_ look your problem. I would
recommend that you go through the FAQ[1], Troubleshooting[2] and Bugs[3]
wiki.
>From a quick glance I can see a few of interesting bits
* there is some missmatch between the reported amount of VRAM vs the one
calculated
[ 2.132258] [drm] nouveau 0000:02:00.0: memory controller reports 512MiB
VRAM
[ 2.132264] [drm] nouveau 0000:02:00.0: we calculated 1024MiB VRAM

* shortly after you're getting MEM_FAULT/IB_EMPTY errors (?related to
the actual amount of vram your card has?)

and last but not least
* you're using an _ancient_ kernel

Thus first and foremost I would advice that you experiment with various
kernels (older and newer) and (hopefully) you'll find one that does not
produce "PFIFO_DMA_PUSHER" style of messages.
You can easily check that even without X, just login in VT and look at
your dmesg output.

Good luck
Emil

[1] http://nouveau.freedesktop.org/wiki/FAQ/
[2] http://nouveau.freedesktop.org/wiki/TroubleShooting/
[3] http://nouveau.freedesktop.org/wiki/Bugs/
> 
> 
> _______________________________________________
> Nouveau mailing list
> Nouveau at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/nouveau
>

> * there is some missmatch between the reported amount of VRAM vs the one
> calculated
> [ 2.132258] [drm] nouveau 0000:02:00.0: memory controller reports 512MiB
> VRAM
> [ 2.132264] [drm] nouveau 0000:02:00.0: we calculated 1024MiB VRAM
>
I can explain that one: nouveau doesn't know about single-subpartition 
[ie. 32-bit bus width per partition] GT21x parts. While that causes an 
error in memory calculations, the calculations err on the safe side 
(reordering block is 2x larger than it needs to be), and there should be 
no negative consequences.

I'll prepare a fix for that bug once I finish my research on dual-rank 
tesla cards (which likely involve a calculation error that falls on the 
*un*safe side), but for the moment it's nothing to worry about.

Marcin Ko?cielnicki

Hi there, Emil.

Sorry for the "long story"... :)

It's just that, being an "outsider" (i.e. not a member of this 
mailing-list) and someone who just came here once before, to ask another 
question, I thought I should sort of "introduce" myself. :)

Unfortunately, (as I say in the link where I point to for my
"results")
I've already tried all sorts of different kernels, including the most 
recent ones (and I've also tried several different distributions), and 
there's really no way that I can make nouveau run on this particular card.

Besides the proprietary drivers (that run well on it), the only other 
driver that I can make run on my card is the generic "vesa" one - but,
only if I add the "nomodeset" parameter at boot.

And, if I don't add this option to the kernel parameters (and just let 
the nouveau driver try to load), I always get black screens, when X 
loads, with every kernel that I try.

It's something in the card, itself, that makes nouveau not able to run 
on it... (Since that, as I said, people who have cards from well known 
brands that use the same chip - 
http://lists.freedesktop.org/archives/nouveau/2013-October/014677.html - 
don't have the same problem that I have.)