Upstream dev here. There is a bug in the ALSA drivers that causes the playback problem you describe. Kernel bug 177571 is the one: https://bugzilla.kernel.org/show_bug.cgi?id=177571. That patch needs to be added to Ubuntu's kernel to fix this.
The relevant patch in the linux kernel 4.8.y tree: http://git.kernel.org/cgit/linux/kernel/git/stable/linux- stable.git/commit/?h=linux-4.8.y&id=0f574c90d7476474d6b4e1d032e75cdf6c722fb3 Upstream bug report: https://sourceforge.net/p/rosegarden/bugs/1537/ Unrelated: The HR Timer issue is a long-standing mystery that upstream doesn't have time to address right now. Use the PCM timers instead if you need better resolution than the system timer. ** Bug watch added: Linux Kernel Bug Tracker #177571 http://bugzilla.kernel.org/show_bug.cgi?id=177571 ** Also affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1637917 Title: rosegarden 16.06 plays only first note, locks up PC when trying to use HR timer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1637917/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
