Hi! Finally I also upgraded to Kubuntu 14.04, and have also still the crackles. Since it is a very old Laptop, there are only USB 2.0 connectors, so for sure no USB-3.0 problem...
And: running on the same laptop daphile (which is a headless player based on Gentoo) works fine, without any problems. Wondering why it's fine with that one, but not Kubuntu... So, let's see if I can help anything... Here's my lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 003: ID 0451:8200 Texas Instruments, Inc. Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub So, the 5th is the DAC, a Audiolab 8200CD. (no other USB devices connected) dmesg gives a lot of outputs, so only ones that differ while playback are: [19545.228188] 3:2:1: cannot get freq at ep 0x1 [19545.231204] 3:2:1: cannot get freq at ep 0x1 [19549.621200] delay: estimated 265, actual 44 (all other lines are similar to: [19550.940214] status interrupt: 80 02) Since I am also more a user then a linux pro: what prompts might be useful to narrow the problem down? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1136110 Title: USB Audio Codec choppy playback To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1136110/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
