[PlanetCCRMA] fc13: alsa-tools, jconvolver

Bernardo Barros bernardobarros2 at gmail.com
Mon Sep 20 11:11:22 PDT 2010

I downloaded the driver NVIDIA-Linux-x86_64-256.53.run

I hope this is right...

Then what are the steps now? Should I uninstall the nouveau driver
(how do I do that?) and then run this file?


2010/9/20 Bernardo Barros <bernardobarros2 at gmail.com>:
> Maybe the problem I am having with the rt-kernel is because of the
> nouveau driver? I tried to find the nvidia driver just to test, but I
> was afraid because I did not find my exact card model on the website
> (Quadro FX 880M).
> I have a very very similar model (Thinkpad w510), but I think they
> have different graphics cards.
> Is that safe to install the akmod-nvidia pakage to try it out?
> 2010/9/18 Fernando Lopez-Lezcano <nando at ccrma.stanford.edu>:
>> On Sat, 2010-09-18 at 16:53 -0700, Jeff Sandys wrote:
>>> >> Date: Thu, 16 Sep 2010 11:22:27 -0700
>>> >> From: Fernando Lopez-Lezcano <nando at ccrma.Stanford.EDU>
>>> >> Subject: [PlanetCCRMA] fc13: alsa-tools, jconvolver
>>> >>
>>> >> Also... I released a version of akmod-nvidia (arghhh) in the
>>> >> planetcore-testing repository that appears to compile the glue module
>>> >> cleanly on rt kernels. Only tested _once_ in a new laptop[*], appears to
>>> >> work but as you already know no support is possible at all for binary
>>> >> drivers. I do see an rt related warning because of the nvidia driver but
>>> >> video appears to work anyway (don't know for how long :-).
>>> >>
>>> >> [*] while nouveau works fine and gives a nice graphical startup and a
>>> >> nice display after boot, the latencies it induces are really really bad.
>>> >> Hopefully it will evolve into better latencies...
>>> How can you tell (scientifically) what nouveau's impact is on latency?
>> Nothing scientific about it. I installed fc13 on a new t510 lenovo with
>> discrete graphics (and I got that one because if you configure with the
>> Intel integrated graphics which I would have preferred then you can't
>> get the best resolution display, arghh) - coult not install fc12 as it
>> would not do the right thing and the display was blank.
>> Anyway, jack was very unreliable with the integrated audio and once I
>> connected the RME Multiface I saw the exact same behavior. Lots of xruns
>> just moving the cursor from window to window. Then I remembered reading
>> about latency vs. nouveau and I installed the nvidia driver much to my
>> distaste (nouveau seemed to be working just fine other than that). The
>> xruns just went away and that was the only change so I presume the
>> problem was nouveau.
>>> I'm running 16ms (3x256 at 48000) latency on my new laptop using
>>> nouveau with fedora 13.  This is about the same as on my old laptop
>>> using f12 and the nvidia akmod from rpmfusion.
>> Glad to hear that it is working on some other hardware. There is hope...
>> I run 2x128 with the RME for my realtime pieces.
>>> I've seen some comments about audio latency issues with nouveau
>>> and akmod-nvidia, and I know that nouveau and akmod-nvidia clash.
>>> If nouveau is causing really bad audio latency, it should be reported.
>> I'll try to, but it will have to wait for a couple of weeks (trip coming
>> up with the usual craziness of trying to finish up things before
>> leaving[*]).
>>> Thanks for building the akmod for nvidia, and I hope your changes get
>>> merged into rpmfusion.  I have been using the akmod since f10 with
>>> no problems.  Except I had some problems with it on f13 on my new
>>> laptop, so I switched to nouveau, and after I cleaned out all the
>>> nvidia stuff it works fine.
>> Good!
>> -- Fernando
>> [*] nothing's easy, on the new laptop I'm using fc13 and the version of
>> evolution that comes with it is not happy with all my email data - for
>> some reason it refuses to show the INBOX of my main account, everything
>> else is fine, so now I'm trying to move to thunderbird (something I've
>> been meaning to do for a while).
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