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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1709282 Title: Plantronics Blackwire C520-M - Cannot get freq at ep 0x1, 0x81 Status in linux package in Ubuntu: Confirmed Bug description: Very similar to this: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622763 == the Problem == Listening to sound on a vmware machine, hosted by Ubuntu, the devices freezes, and cannot listen to sound anymore, i have to connect/disconnect the device. After i disconnect i get the logs: Aug 8 13:52:05 tim-lap-143 kernel: [112278.344893] usb 1-1: 1:1: cannot get freq at ep 0x81 Aug 8 13:52:05 tim-lap-143 kernel: [112278.347094] usb 1-1: 2:1: cannot get freq at ep 0x1 Aug 8 13:52:05 tim-lap-143 kernel: [112278.358786] usb 1-1: Warning! Unlikely big volume range (=8192), cval->res is probably wrong. Aug 8 13:52:05 tim-lap-143 kernel: [112278.358787] usb 1-1: [11] FU [Sidetone Playback Volume] ch = 1, val = 0/8192/1 Aug 8 13:52:05 tim-lap-143 kernel: [112278.641980] input: Plantronics Plantronics C520-M as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.3/0003:047F:C036.000F/input/input32 Aug 8 13:52:05 tim-lap-143 kernel: [112278.702298] plantronics 0003:047F:C036.000F: input,hiddev0,hidraw2: USB HID v1.11 Device [Plantronics Plantronics C520-M] on usb-0000:00:14.0-1/input3 Aug 8 13:52:05 tim-lap-143 kernel: [112278.747708] usb 1-1: 2:1: cannot get freq at ep 0x1 Aug 8 13:52:16 tim-lap-143 kernel: [112289.406154] usb 1-1: reset full-speed USB device number 19 using xhci_hcd Aug 8 13:52:16 tim-lap-143 kernel: [112289.906146] usb 1-1: reset full-speed USB device number 19 using xhci_hcd = The solution == It is simple, add this USB ID to the sound/usb/quirks.c:snd_usb_get_sample_rate_quirk function. version signature: Ubuntu 4.10.0-28.32-generic 4.10.17 Thanks! --- ApportVersion: 2.20.4-0ubuntu4.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0c: mihai.cin...@3pillar.corp 2208 F...m pulseaudio /dev/snd/controlC0: mihai.cin...@3pillar.corp 2208 F.... pulseaudio DistroRelease: Ubuntu 17.04 HibernationDevice: RESUME=UUID=d363a75c-d8a4-467d-a576-a46b3c317861 InstallationDate: Installed on 2017-06-22 (47 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) MachineType: Dell Inc. Precision 3510 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-28-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash i915.enable_guc_loading=1 i915.enable_guc_submission=1 intel_pstate=skylake_hwp i915.enable_psr=1 i915.disable_power_well=0 i915.enable_rc6=0 vt.handoff=7 ProcVersionSignature: Ubuntu 4.10.0-28.32-generic 4.10.17 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.10.0-28-generic N/A linux-backports-modules-4.10.0-28-generic N/A linux-firmware 1.164.1 Tags: zesty Uname: Linux 4.10.0-28-generic x86_64 UpgradeStatus: Upgraded to zesty on 2017-07-21 (18 days ago) UserGroups: WifiSyslog: _MarkForUpload: True dmi.bios.date: 05/12/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.14.4 dmi.board.name: 00D283 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.14.4:bd05/12/2017:svnDellInc.:pnPrecision3510:pvr:rvnDellInc.:rn00D283:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Precision 3510 dmi.sys.vendor: Dell Inc. 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