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Message #02043
[Bug 1353832] Re: arm CPUs get "FATAL: cannot locate cpu MHz in /proc/cpuinfo"
** Also affects: jackd2 (Arch Linux)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1353832
Title:
arm CPUs get "FATAL: cannot locate cpu MHz in /proc/cpuinfo"
Status in jackd2 package in Ubuntu:
Confirmed
Status in jackd2 package in Arch Linux:
New
Bug description:
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
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References