apport information ** Tags added: apport-collected
** Description changed: Problem was discovered on Dell 6400 laptop (32-bit) after upgrading Ubuntu 14.04 to 16.40. Launching Cheese with Live! Cam Connect HD VF0750 webcam *sometimes* (randomly) gives no video, only black image. No errors are reported on GUI, console and syslog. You can start Cheese again and it might start video, but sometimes not, randomly. In case when there is no image, opening Settings and changing resolution makes video appear! Tried to downgrade libv4l-0, libv4lconvert0 to 14.04 version (1.0.1 I believe) but it did not helped. Upgrading to Linux 4.8 (from hwe package) did not helped either. On other laptop with Ubuntu 14.04 (with same 4.4 kernel from hwe package) there is no issues as such, so I assume it's bug with Cheese itself. Interestingly, on yet other laptop (Asus N551JM) with Kubuntu 16.04 Cheese does not show video on launch always (tested with many restarts of Cheese app). If I change resolution in Settings, it does start to show video thought. That computer is faster than Dell 6400 one, so I'm guessing it could be some kind race condition..? I cannot reproduce this issue with Camorama for example, it seems it always starts video successfully for this webcam. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: cheese 3.18.1-2ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30 Uname: Linux 4.4.0-53-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 Date: Sat Dec 17 21:15:27 2016 InstallationDate: Installed on 2015-06-25 (541 days ago) InstallationMedia: Kubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150219.1) MachineType: ASUSTeK COMPUTER INC. N551JM ProcEnviron: LANGUAGE=lt TERM=screen-256color PATH=(custom, no user) LANG=lt_LT.UTF-8 SHELL=/bin/bash RelatedPackageVersions: cheese 3.18.1-2ubuntu3 cheese-common 3.18.1-2ubuntu3 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-07-30 (139 days ago) dmi.bios.date: 02/13/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: N551JM.205 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: N551JM dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN551JM.205:bd02/13/2015:svnASUSTeKCOMPUTERINC.:pnN551JM:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN551JM:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: N551JM dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. + --- + ApportVersion: 2.20.1-0ubuntu2.4 + Architecture: i386 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC1: petras 2060 F.... pulseaudio + /dev/snd/controlC0: petras 2060 F.... pulseaudio + CurrentDesktop: Unity + DistroRelease: Ubuntu 16.04 + InstallationDate: Installed on 2011-11-23 (1851 days ago) + InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) + MachineType: Dell Inc. MM061 + Package: linux (not installed) + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-30-generic root=UUID=b57d1858-e7f3-42a3-a7ef-5e7ab8dd5ae4 ro quiet splash vt.handoff=7 + ProcVersionSignature: Ubuntu 4.8.0-30.32~16.04.1-generic 4.8.6 + RelatedPackageVersions: + linux-restricted-modules-4.8.0-30-generic N/A + linux-backports-modules-4.8.0-30-generic N/A + linux-firmware 1.157.6 + RfKill: + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no + Tags: xenial + Uname: Linux 4.8.0-30-generic i686 + UpgradeStatus: Upgraded to xenial on 2016-11-19 (28 days ago) + UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare uucp + _MarkForUpload: True + dmi.bios.date: 06/09/2006 + dmi.bios.vendor: Dell Inc. + dmi.bios.version: A06 + dmi.board.name: 0KD882 + dmi.board.vendor: Dell Inc. + dmi.chassis.type: 8 + dmi.chassis.vendor: Dell Inc. + dmi.modalias: dmi:bvnDellInc.:bvrA06:bd06/09/2006:svnDellInc.:pnMM061:pvr:rvnDellInc.:rn0KD882:rvr:cvnDellInc.:ct8:cvr: + dmi.product.name: MM061 + dmi.sys.vendor: Dell Inc. ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1650796/+attachment/4793140/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1650796 Title: Black image (no video) with Live! Cam Connect HD VF0750 with some exceptions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1650796/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
