penalvch, thx for your reply. tested with 3.15.0-031500rc6-generic amd64. problem persists.
Response: http://www.spinics.net/lists/linux-usb/msg108362.html http://marc.info/?l=linux-usb&m=140110305107599&w=2 ** Description changed: My logitech c920 usb webcam doesn't work when connected to my usb 3.0 host controller (Etron EJ168a).When i connect my usb 3.0 stick to the same port it's recognized and also works - just not the webcam. disabling usb 3.0 legacy mode (xhci) in my bios doesn't change anything, it's still used instead of ehci. - Upstream URL http://www.spinics.net/lists/linux-usb/msg107696.html . + Upstream URL http://www.spinics.net/lists/linux-usb/msg108362.html . dmesg | grep usb usb 3-1: Not enough bandwidth for altsetting 3 3:3:3: usb_set_interface failed (-22) dmesg | grep xhci xhci_hcd 0000:06:00.0: ERROR: unexpected command completion code 0x11. WORKAROUND: When connected to a usb 2.0 port it works perfectly. --- ApportVersion: 2.14.1-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC3: truthy 1586 F.... pulseaudio /dev/snd/controlC2: truthy 1586 F.... pulseaudio /dev/snd/pcmC2D0p: truthy 1586 F...m pulseaudio /dev/snd/controlC0: truthy 1586 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=646b5559-d036-471d-9f6e-29068cf6172b InstallationDate: Installed on 2012-11-29 (531 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. NonfreeKernelModules: wl nvidia Package: linux (not installed) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=5adf789b-4753-49d0-bae6-91dae8cc3701 ro splash ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127.2 Tags: trusty Uname: Linux 3.13.0-24-generic x86_64 UpgradeStatus: Upgraded to trusty on 2014-05-09 (5 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/29/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.30 dmi.board.name: Z68 Pro3 Gen3 dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.30:bd06/29/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ68Pro3Gen3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. ** Tags removed: kernel-bug-exists-upstream-3.15-rc5 ** Tags added: kernel-bug-exists-upstream-3.15-rc6 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- 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/1319443 Title: 046d:082d Logitech c920 usb webcam not working when plugged into USB 3.0 port Status in “linux” package in Ubuntu: Confirmed Bug description: My logitech c920 usb webcam doesn't work when connected to my usb 3.0 host controller (Etron EJ168a).When i connect my usb 3.0 stick to the same port it's recognized and also works - just not the webcam. disabling usb 3.0 legacy mode (xhci) in my bios doesn't change anything, it's still used instead of ehci. Upstream URL http://www.spinics.net/lists/linux-usb/msg108362.html . dmesg | grep usb usb 3-1: Not enough bandwidth for altsetting 3 3:3:3: usb_set_interface failed (-22) dmesg | grep xhci xhci_hcd 0000:06:00.0: ERROR: unexpected command completion code 0x11. WORKAROUND: When connected to a usb 2.0 port it works perfectly. --- ApportVersion: 2.14.1-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC3: truthy 1586 F.... pulseaudio /dev/snd/controlC2: truthy 1586 F.... pulseaudio /dev/snd/pcmC2D0p: truthy 1586 F...m pulseaudio /dev/snd/controlC0: truthy 1586 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=646b5559-d036-471d-9f6e-29068cf6172b InstallationDate: Installed on 2012-11-29 (531 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. NonfreeKernelModules: wl nvidia Package: linux (not installed) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=5adf789b-4753-49d0-bae6-91dae8cc3701 ro splash ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127.2 Tags: trusty Uname: Linux 3.13.0-24-generic x86_64 UpgradeStatus: Upgraded to trusty on 2014-05-09 (5 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/29/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.30 dmi.board.name: Z68 Pro3 Gen3 dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.30:bd06/29/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ68Pro3Gen3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. 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