Kayleigh, at your earliest convenience, could you please test the latest upstream kernel available from the very top line at the top of the page from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and please do not test the daily folder)? Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow additional upstream developers to examine the issue.
If testing on your main install would be inconvenient, one may: 1) Install Ubuntu to a different partition and then test this there. 2) Backup, or clone the primary install. If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, and Y are the first two numbers of the kernel version, and Z is the release candidate number if it exists. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Once testing of the latest upstream kernel is complete, please mark this report's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Changed in: linux (Ubuntu) Importance: Low => Medium -- 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/1522472 Title: Black screen on boot after updating Trusty Status in linux package in Ubuntu: Incomplete Bug description: Current release: Ubuntu 14.04.3 LTS Current version: v3.13.0.68.74 Expected behavior: System boots to GUI showing chromium-browser What happened: Booted to black screen After updating my linux kernel from v3.13.0.32.38 to v3.13.0.68.74, my system does not boot into the GUI properly anymore. X11 starts up and I have confirmed that I can interact with the screen that should be there via keyboard (using chromium logs, I can confirm that I can open new tabs with CTRL+T), but the screen is completely black. If I restart nodm, X11 restarts and comes up as it should. If I simply switch to the vivid kernel (v3.19.0.33.20) on the same system the problem goes away and the system boots properly every time, as well as the system working fine until I update just the linux-generic package. Other possibly useful information: - Every time the system boots to a black screen, plymouth does not appear while booting nor can I TTY switch to it after booting (instead the TTY it should be on is a black screen with a blinking cursor), which is opposite of the behavior observed when the system boots properly. - Attached Xorg.0.log (produced from a bad boot). --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Jan 15 11:11 seq crw-rw---- 1 root audio 116, 33 Jan 15 11:11 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.1-0ubuntu3.19 Architecture: i386 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=c64ce442-021a-4873-934f-770057560a1d InstallationDate: Installed on 2015-05-21 (238 days ago) InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.3) IwConfig: p3p1 no wireless extensions. lo no wireless extensions. MachineType: To be filled by O.E.M. To be filled by O.E.M. Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-68-generic root=UUID=5dff8d1e-9793-45ca-80fa-24207ce6e69e ro nomdmonddf nomdmonisw ProcVersionSignature: Ubuntu 3.13.0-68.111-generic 3.13.11-ckt27 RelatedPackageVersions: linux-restricted-modules-3.13.0-68-generic N/A linux-backports-modules-3.13.0-68-generic N/A linux-firmware 1.127.19 RfKill: Error: [Errno 2] No such file or directory Tags: trusty Uname: Linux 3.13.0-68-generic i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom lpadmin plugdev sudo _MarkForUpload: True dmi.bios.date: 12/15/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.6.5 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Aptio CRB dmi.board.vendor: AMI Corporation dmi.board.version: A.6 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.6.5:bd12/15/2014:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnAMICorporation:rnAptioCRB:rvrA.6:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: To be filled by O.E.M. 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