This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.
Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org. Once this bug is reported upstream, please add the tag: 'kernel-bug- reported-upstream'. [0] https://wiki.ubuntu.com/Bugs/Upstream/kernel -- 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/1362358 Title: uvcvideo doesn't work with USB webcam with linux 3.16 Status in The Linux Kernel: Unknown Status in “linux” package in Ubuntu: Triaged Bug description: uvcvideo doesn't work with linux 3.16 on at least two USB webcams. guvcvideo shows a black screen and reports "Could not grab image" or "ignoring empty buffer". The camera works fine with Motion or Skype in linux 3.16. guvcvideo works fine with linux 3.15. There is more info at https://bugzilla.kernel.org/show_bug.cgi?id=81611. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-10-generic 3.16.0-10.15 ProcVersionSignature: Ubuntu 3.16.0-10.15-generic 3.16.1 Uname: Linux 3.16.0-10-generic x86_64 ApportVersion: 2.14.6-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: rocko 1894 F.... pulseaudio CurrentDesktop: Unity Date: Wed Aug 27 17:26:27 2014 HibernationDevice: RESUME=UUID=e586cc1f-5429-445e-b3fa-d15a1f5b54a0 InstallationDate: Installed on 2014-08-22 (5 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140821) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lsusb: Bus 001 Device 002: ID 0408:2fb1 Quanta Computer, Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-10-generic root=UUID=fa1da5bc-d7d9-40bf-9d26-ad7bcf1ab6bc ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-10-generic N/A linux-backports-modules-3.16.0-10-generic N/A linux-firmware 1.132 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1362358/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp