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Message #65005
[Bug 1319443] Re: 046d:082d Logitech c920 usb webcam not working when plugged into USB 3.0 port
I've been asked to enable xhci dynamic debugging (xhci_hcd) with the
latest mainline kernel to provide better information about the problem.
Can you please tell how to do that - which console command I'd have to
input or which files I'd have to alter - I can't seem to get it -
googled around a bit.
And after enabling it - they would need the output of grepping xhci
and/or usb from kern.log right?
** Tags removed: kernel-bug-exists-upstream-3.15-rc7
** Tags added: kernel-bug-exists-upstream-3.15-rc8
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
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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:
Incomplete
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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