Recompiled the kernel, added the alias Kai told me to, but still get the disconnects ( not that often, but they are still there )
logs: Aug 17 09:50:49 tim-lap-143 kernel: [37886.482732] usb 1-1: device (047f:c036): applying quirk alias 047f:02f7 Aug 17 09:50:49 tim-lap-143 kernel: [37886.523911] usb 1-1: 2:1: cannot get freq at ep 0x1 Aug 17 09:50:49 tim-lap-143 kernel: [37886.533237] usb 1-1: Warning! Unlikely big volume range (=8192), cval->res is probably wrong. Aug 17 09:50:49 tim-lap-143 kernel: [37886.533240] usb 1-1: [11] FU [Sidetone Playback Volume] ch = 1, val = 0/8192/1 Aug 17 09:50:49 tim-lap-143 kernel: [37886.816489] input: Plantronics Plantronics C520-M as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:047F:C036.000E/input/input31 Aug 17 09:50:49 tim-lap-143 kernel: [37886.879106] plantronics 0003:047F:C036.000E: input,hiddev0,hidraw4: USB HID v1.11 Device [Plantronics Plantronics C520-M] on usb-0000:00:14.0-1/input3 Aug 17 09:50:49 tim-lap-143 kernel: [37886.916337] usb 1-1: 2:1: cannot get freq at ep 0x1 Aug 17 09:50:49 tim-lap-143 kernel: [37886.923375] usb 1-1: 1:1: cannot get freq at ep 0x81 Aug 17 09:50:49 tim-lap-143 rtkit-daemon[2591]: Supervising 3 threads of 1 processes of 1 users. Aug 17 09:50:49 tim-lap-143 rtkit-daemon[2591]: Successfully made thread 22206 of process 2590 (n/a) owned by '1783642315' RT at priority 5. Aug 17 09:50:49 tim-lap-143 rtkit-daemon[2591]: Supervising 4 threads of 1 processes of 1 users. Aug 17 09:50:49 tim-lap-143 rtkit-daemon[2591]: Supervising 4 threads of 1 processes of 1 users. Aug 17 09:50:49 tim-lap-143 rtkit-daemon[2591]: Successfully made thread 22207 of process 2590 (n/a) owned by '1783642315' RT at priority 5. Aug 17 09:50:49 tim-lap-143 rtkit-daemon[2591]: Supervising 5 threads of 1 processes of 1 users. Aug 17 09:50:54 tim-lap-143 pulseaudio[2590]: [alsa-sink-USB Audio] alsa-util.c: Got POLLNVAL from ALSA Aug 17 09:50:54 tim-lap-143 pulseaudio[2590]: [alsa-sink-USB Audio] alsa-util.c: Could not recover from POLLERR|POLLNVAL|POLLHUP with snd_pcm_prepare(): No such device Aug 17 09:50:54 tim-lap-143 acpid: input device has been disconnected, fd 22 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1709282 Title: Plantronics Blackwire C520-M - Cannot get freq at ep 0x1, 0x81 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1709282/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
