linuxaudio.org

On Thu, November 1, 2012 4:28 am, Ralf Mardorf wrote:

quoted text
> Changing file permissions didn't solve it.

Shouldn't have to, should be in group audio by default.
>

quoted text
> Trying RTC timer...

> RtcTimer::setTimerFreq(): cannot set freq 1024 on /dev/rtc: Permission

> denied precise timer not available, check file permissions and allowed

> RTC freq (/sys/class/rtc/rtc0/max_user_freq) Trying ALSA timer...

> AlsaTimer::initTimer(): best available ALSA timer: system timer

> got timer = 72

>

> Muse 2.0.1 Ubuntu Quantal amd64

>

> Any hints are welcome!

edit /etc/rc.local and add a line before the exit like:

echo 3072 >/sys/class/rtc/rtc0/max_user_freq
Also, may not be needed here but recommended for other apps, edit the last

line of /etc/sysctl.d/50-ubuntustudio.conf to uncomment:

dev.hpet.max-user-freq=3072
We have been testing this and had been unable to see any difference with

it enabled or not in MIDI jitter etc. I am not sure if there are downsides

to setting these (more cpu usage for example), but personally I would give

up cpu usage for better sound.
Please let me know if this helps and I will make it the default.
--

Len Ovens

www.OvenWerks.net
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