[PlanetCCRMA] fc13: alsa-tools, jconvolver

Fernando Lopez-Lezcano nando at ccrma.Stanford.EDU
Mon Sep 20 11:33:49 PDT 2010

On 09/20/2010 11:11 AM, Bernardo Barros wrote:
> 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?

You could try enabling the planetcore-testing repository and installing 
akmod-nvidia. That will take care of pretty much everything, including 
adding parameters to the kernel boot line that do the righ thing with 
the nouveau driver. The kernel module will hopefully be compiled on your 
next boot. Make sure you have the kernel-rtPAE-devel or kernel-rt-devel 
packages installed before doing any of this...

-- Fernando

> 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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