Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 stable 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'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v4.4.25 -- 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/1629880 Title: Ubuntu won't launch after the Ubuntu, with Linux 4.4.0-39 generic update Status in linux package in Ubuntu: Confirmed Status in linux source package in Xenial: Confirmed Bug description: I am running Linux Ubuntu 16.04 LTS, and I've discussed in a thread at 'Ask Ubuntu: System update almost broke the system' about the Kernel Bug — as suggested by a local user boddhi.zazen — that I experienced as I was running my system updates. The problem occurs with "Ubuntu, with Linux 4.4.0-39 generic", although I am still able to access Ubuntu with the older "Ubuntu, with Linux 4.4.0-38 generic" via "+Advanced options for Ubuntu". Here's what happened: 1. I first ran the upgrade procedures through terminal as usual: sudo apt-get update, sudo apt-get upgrade, sudo apt-get autoremove, and sudo apt-get autoremove 2. However, I was told that "4 not upgraded", so I decided to run Software Updater as well, and there was indeed updates available concerning "Ubuntu base". I installed those successfully, and decided to proceed with restart my system. After the restart, my system doesn't start though. Instead, I receive the following error message: <-- THE BEGINNING, NOT PART OF THE ERROR MESSAGE --> [ 1.452270] genirq: Flags mismatch irq 0. 00000080 (nvme0q0) vs. 00015a00 (timer) [ 1.452551] iounmap: bad address ffffc90001b88000 Scanning for Btrfs filesystems Gave up waiting for root device. Common problems: - Boot args (cat /proc/cmdline) - Check rootdelay= (did the system wait for the right device?) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) ALERT! UUID=a5ccaf22-ffde-44c2-8c59-84a851f9fd90 does not exist. Dropping to shell! BusyBox v1.222.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) <-- THE END, NOT PART OF THE ERROR MESSAGE --> I was able to recover my system through the "+Advanced options for Ubuntu", which I opened after. There I had total of nine choices, three options for each version. I first tried the "recovery version" of the latest one, but it didn't work. After that, I tried the "generic version" of the second latest, and — thank God — that one managed to recover my system! I believe the package is called linux- image-4.4.0-39-generic ("Ubuntu, with Linux 4.4.0-38 generic" in the menu") ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: ubuntu-release-upgrader-core 1:16.04.16 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CrashDB: ubuntu Date: Mon Oct 3 16:19:33 2016 PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: release-upgrade UpgradeStatus: No upgrade log present (probably fresh install) VarLogDistupgradeTermlog: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1629880/+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
