With kernel version 4.3.0-040300rc4, the issue stays essentially the same. But the sound output now systematically starts at the BEGINNING of the 2nd time I hit any 'Test' button.
So, there seems to be a slight improvement. ** Tags added: kernel-bug-exists-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1504227 Title: Sound output starts several seconds late using DisplayPort with [AMD/ATI] Tahiti XT HDMI Audio [Radeon HD 7970 Series] [1002:aaa0] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1504227/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
