Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc3-wily ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Tags added: kernel-da-key ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1520774 Title: btrfs kernel panic in 4.2.0-18-generic Status in linux package in Ubuntu: Incomplete Bug description: lsb_release -rd Description: Ubuntu 15.10 Release: 15.10 apt-cache policy linux-image-generic linux-image-generic: Installiert: 4.2.0.18.20 Installationskandidat: 4.2.0.18.20 Versionstabelle: *** 4.2.0.18.20 0 500 http://de.archive.ubuntu.com/ubuntu/ wily-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu/ wily-security/main amd64 Packages 100 /var/lib/dpkg/status 4.2.0.16.18 0 500 http://de.archive.ubuntu.com/ubuntu/ wily/main amd64 Packages ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-18-generic 4.2.0-18.22 ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3 Uname: Linux 4.2.0-18-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Sat Nov 28 13:27:37 2015 HibernationDevice: RESUME=UUID=980993fc-6c0b-4081-b7db-803bf1c95cb9 InstallationDate: Installed on 2015-09-10 (79 days ago) InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: Dell Inc. PowerEdge 2950 ProcEnviron: TERM=xterm SHELL=/bin/bash PATH=(custom, no user) LANG=de_DE.UTF-8 XDG_RUNTIME_DIR=<set> ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-18-generic root=UUID=5fc5358f-103a-409e-9d07-2489c35ddf66 ro rootflags=subvol=@ RelatedPackageVersions: linux-restricted-modules-4.2.0-18-generic N/A linux-backports-modules-4.2.0-18-generic N/A linux-firmware 1.149.2 RfKill: SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: Upgraded to wily on 2015-11-04 (23 days ago) dmi.bios.date: 10/30/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.7.0 dmi.board.name: 0H603H dmi.board.vendor: Dell Inc. dmi.board.version: A06 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.7.0:bd10/30/2010:svnDellInc.:pnPowerEdge2950:pvr:rvnDellInc.:rn0H603H:rvrA06:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge 2950 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1520774/+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
