Hello Christopher, I've already tested the final v3.13 kernel and the "sporadic working issue" does still exists. Same behavior than in the previouse kernel versions. I also created a bug report at the kernel bugzilla some time ago, no reaction until now. [0]
[0] https://bugzilla.kernel.org/show_bug.cgi?id=68731 ** Bug watch added: Linux Kernel Bug Tracker #68731 http://bugzilla.kernel.org/show_bug.cgi?id=68731 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1237296 Title: 168c:0036 [Acer Aspire E1-572] ath9k QCA9565/AR9565/QCWB335 Bluetooth works sporadic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1237296/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs