On Tue, 2014-08-19 at 06:37 -0400, Alan McKay wrote:
> On Tue, Aug 19, 2014 at 5:23 AM, Ralf Mardorf
> <ralf.mardorf@xxxxxxxxxxxxxx> wrote:
> > So you didn't forget to add the user to the group "audio" ("realtime" or
> > whatever it's called for Ubuntu Studio and you also set up PAM?
>
> Hmmm, neither. Adding me to group audio makes sense, but what's with PAM?
> What do I have to do there? I can't find anything obvious with
> google.
To /etc/security/limits.conf or /etc/security/limits.d/audio.conf add:
@audio - rtprio 99
@audio - memlock unlimited
some prefer to give less rtprio, perhaps you'll prefer
@audio - rtprio 95
@audio - memlock unlimited
IIRC on older machines graphics, mouse, keyboard could become
unresponsive with prio set to 99. "nice" values are useless for rt.
You should use the rtirq script too. OTOH, somebody already mentioned,
that for using Audacity there's no need for a PREEMPT or PREEMPT RT
kernel.
http://www.rncbc.org/jack/
Be careful when using a rtirq package from official Ubuntu repositories,
nobody seems to test if the script fits to the provided kernel, IOW
sometimes the provided version doesn't work, simply run the script with
the status option, then you'll see if it works and don't forget to set
up the config for the script, OTOH the default likely will be ok for
your setup.
rtc0 should get the highest prio, followed by your sound device.
--
"I Know Where Your Cat Lives visualizes public photos of cats on a world
map using coordinates embedded in their metadata.
[snip]
"I Know Where Your Cat Lives" iknowwhereyourcatlives.com is a data
experiment that visualizes a sample of 1 million public pics of cats on
a world map, locating them by the latitude and longitude coordinates
embedded in their metadata. The cats were accessed via publicly
available APIs provided by popular photo sharing websites. The photos
were then run through various clustering algorithms using a
supercomputer at Florida State University in order to represent the
enormity of the data source.
[snip]
" -
https://www.kickstarter.com/projects/1910822604/i-know-where-your-cat-lives
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