arm CPUs get "FATAL: cannot locate cpu MHz in /proc/cpuinfo"

[Roger Allen]

Trying to run the Supercollider http://supercollider.github.io/ sound synthesis program on an ARM-based NVIDIA Jetson TK1, I received this error. I also received this when I tried jack_simple_client

FATAL: cannot locate cpu MHz in /proc/cpuinfo

This is from the Jack Library.
$ apt-cache policy libjack-jackd2-0:armhf
libjack-jackd2-0:
  Installed: 1.9.9.5+20130622git7de15e7a-1ubuntu1
  Candidate: 1.9.9.5+20130622git7de15e7a-1ubuntu1
  Version table:
 *** 1.9.9.5+20130622git7de15e7a-1ubuntu1 0
        500 http://ports.ubuntu.com/ubuntu-ports/ trusty/main armhf Packages
        100 /var/lib/dpkg/status
(updated in 2013)

The issue is fixed in the latest source by this checkin: (from March, 2014)
https://github.com/jackaudio/jack2/commit/d425d8035b761b4a362c538c41eca874ff4995f0

I have found this latest source works for me if I compile and install jack by hand. So, I think updating the libjack-jackd2-0:armhf library would be desirable. Until then, all ARM-based systems can't use jack.

Also see https://bugs.launchpad.net/ubuntu/+source/audacity/+bug/1347914 for a similar report for the program Audacity.

Additional details

$ lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04

$ uname -a
Linux muggy 3.10.24-gf455cd4-dirty #3 SMP PREEMPT Tue Jul 22 12:20:38 PDT 2014 armv7l armv7l armv7l GNU/Linux

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Roger Allen (rogerallen)]

I've created a gist describing how to work around this.

https://gist.github.com/rogerallen/0346a1812deda2a380da