Re: Installing realtime kernel - gentoo ERRORs loading realtime module

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Marc-Olivier Barre wrote:


well... I just went ahead and added the line:
session     required       pam_limits.so

in /etc/pam.d/xdm, login and gdm


Good. Did you check what the /var/log/auth.log file says after you've
logged in ? there could be some hints there.

Hmm... no /var/log/auth.log file. This security stuff is new to me. Can you tell me where I can force
pam (I assume that's who's writing the log) to write this log?  I'll google.



Which didn't seem to make a difference to my other problem.
Note that booting produces no errors. My audio device driver loads fine
and initializes. Everything seems fine, except

1. Audio plays back very slowly. Video files play at various speeds
(fast then slow then fast, etc.)


That video thing is weird, though I'm not sure it's realtime related

I don't either, I think it is clock related. The video is following the audio and the video player can't set the audio device clock. Thus, I think it's related to setting the audio device's clock.


2. Running qjackctl  I receive the warning that real-time scheduling is
not permed and then I continuously receive delay errors:

Try running ulimit -l in a terminal to see if you get the same value
you've set in the /etc/security/limits.conf ( "-l" gives the memlock
parameter). If not, then the limits.conf file is not being taken into
account at login time.

Yep, it's the same. That's good.


Any help on: pointers on getting real-time to work AND for applications to set the clock
of the audio device is much appreciated!

Before starting jack, you need to set the sample rate to what you
want.
Right, that's why it worked when I set it to 44.1k (which was my default)

if you can do it with alsamixer, it means that it can be saved
and reloaded at boot time using alsactl.

Yeah... I've done that. But, still I would like to be able to have external apps set the clock, right?

I supposed there is an init
script in gentoo that does it automatically at boot time (have a look
in /etc/init.d or /etc/rc.d/init.d, there should be a script called
"alsa" something)

yeah, it's /etc/init.d/alsasound in gentoo.

I appreciate your input, thanks!

brad

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