Hans109h, the next step is to fully commit bisect from kernel 3.16 to 4.2 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions is not fully commit bisecting. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: needs-bisect ** Description changed: - Same problem as - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1313981. Given the - time and kernel development that has occurred since I reported that bug, - I thought i would start a new bug report. - - Upon upgrading to Ubuntu Gnome 15.10 with kernel 4.2 I am once again - unable to access my serial port. - - I have tested the mainline kernel, v4.3-rc6-unstable and the bug is - still present. + Upon upgrading from 14.10 to Ubuntu Gnome 15.10 with kernel 4.2 I am + once again unable to access my serial port. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-16-generic 4.2.0-16.19 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/pcmC1D0c', '/dev/snd/controlC1', '/dev/snd/by-path', '/dev/snd/hwC0D3', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Sat Oct 24 22:50:11 2015 HibernationDevice: RESUME=UUID=61ccfbf9-f4d0-4989-8d82-be0dd1500450 InstallationDate: Installed on 2014-11-30 (328 days ago) InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: System manufacturer System Product Name ProcEnviron: - TERM=xterm-256color - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=e0e80586-764e-42bf-8659-c5da430f1d1e ro crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: - linux-restricted-modules-4.2.0-16-generic N/A - linux-backports-modules-4.2.0-16-generic N/A - linux-firmware 1.149 + linux-restricted-modules-4.2.0-16-generic N/A + linux-backports-modules-4.2.0-16-generic N/A + linux-firmware 1.149 RfKill: - 0: phy0: Wireless LAN - Soft blocked: yes - Hard blocked: no + 0: phy0: Wireless LAN + Soft blocked: yes + Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to wily on 2015-10-24 (0 days ago) dmi.bios.date: 08/13/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2104 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: P8Z77-V dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2104:bd08/13/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-V:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer ** 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/1509751 Title: Kernel disabling serial port ttyS0 again Status in linux package in Ubuntu: Incomplete Bug description: Upon upgrading from 14.10 to Ubuntu Gnome 15.10 with kernel 4.2 I am once again unable to access my serial port. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-16-generic 4.2.0-16.19 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/pcmC1D0c', '/dev/snd/controlC1', '/dev/snd/by-path', '/dev/snd/hwC0D3', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Sat Oct 24 22:50:11 2015 HibernationDevice: RESUME=UUID=61ccfbf9-f4d0-4989-8d82-be0dd1500450 InstallationDate: Installed on 2014-11-30 (328 days ago) InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: System manufacturer System Product Name ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic root=UUID=e0e80586-764e-42bf-8659-c5da430f1d1e ro crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.2.0-16-generic N/A linux-backports-modules-4.2.0-16-generic N/A linux-firmware 1.149 RfKill: 0: phy0: Wireless LAN Soft blocked: yes Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to wily on 2015-10-24 (0 days ago) dmi.bios.date: 08/13/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2104 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: P8Z77-V dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2104:bd08/13/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-V:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1509751/+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