[Slackbuilds-users] slackware audio

Luis Henrique lmello.009 at gmail.com
Fri Aug 20 19:04:58 UTC 2010

There's a tweak that works with jack and other applications
such as LMMS. Try putting this in your /etc/rc.d/rc.local:

# Set JACK (and friends) to run in realtime mode:
echo "Setting JACK to run in realtime mode..."
setcap cap_ipc_lock,cap_sys_nice=ep /usr/bin/jackd
setcap cap_ipc_lock,cap_sys_nice=ep /usr/bin/qjackctl
setcap cap_ipc_lock,cap_sys_nice=ep /usr/bin/lmms
setcap cap_ipc_lock,cap_sys_nice=ep <application-path>

-- Luis

On 08/20/2010 12:18 PM, Felix Pfeifer wrote:
> Hi all, especially you audio software submitters,
> there is some software on slackbuilds like
> rosegarden, pd or ardour that is often used
> together with a realtime patched linux kernel.
> Do you audio guys use such a kernel to avoid
> audio dropouts? How did you configure your
> slackware box for these softwares, or didn't
> you change any of the default settings? Long
> time i was using fedora and planet ccrma for
> my audio software, but now switched back
> to slackware again and i can't achieve the same
> results. Most of the software i use produces
> audio dropouts on slackware with default settings
> and i have no idea how to tweak it. I didn't want
> to use a patched kernel and i guess somehow
> it should work without, because i saw a guy
> (dan wilcox alias robotcowboy) using pd with an
> unpatched linux kernel and he managed to configure
> his system in a way that allowed him to use audio
> software without dropouts (he didn't run them
> as superuser). Any ideas?
> greetings
> Felix
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