2015-02-02 18:27 GMT+01:00 Ralf Mardorf <ralf.mardorf@rocketmail.com>:
Most likely it's a user issue,
I confess I did many times system upgrade without taking into account the advice given here: https://wiki.archlinux.org/index.php/General_recommendations <quoted> it is imperative to keep up to date with changes in Arch Linux that require manual intervention before upgrading your system. Subscribe to the arch-announce mailing list or check the front page Arch news every time before you update. etc.. </quote>
Backup your current install and make a clean new install. Replace the default kernel with https://www.archlinux.org/packages/core/x86_64/linux-lts/ or with linux-rt-lts from the Arch Audio repository or from AUR, since it's 3.10..., don't worry about the Rt-patch, when instlling it just for testing purpose.
I did so. I have now a fresh install of Arch linux with kernel 3.14.31-1-lts . -- Regards from Pal