I'd like to perform a kernel bisect to figure out which commit caused this regression. We need to identify the earliest kernel that did not exhibit the bug and the first kernel that did exhibit the bug.
Can you test the following kernels and post back? v4.4 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-wily/ If v4.4 final exhibits the bug, we should move on to testing some of the v4.4 release candidates. v4.4-rc4: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc4-wily/ If v4.4-rc4 does not exhibit the bug then test v4.4-rc6: v4.4-rc6: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc6-wily/ If v4.4-rc4 does exhibit the bug then test v4.4-rc2: v4.4-rc2: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc2-wily/ If all of the 4.4 kernels do in fact have the bug, then we should test the 4.3 final kernel. It is available from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.3-wily/ Thanks in advance! ** Tags added: performing-bisect ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Importance: Undecided => High ** Changed in: linux (Ubuntu Xenial) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu Xenial) Status: New => In Progress ** Changed in: linux (Ubuntu) Status: Confirmed => In Progress -- 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/1609242 Title: Kernel 4.4x results in blackscreen - Intel Ivybridge Status in linux package in Ubuntu: In Progress Status in linux source package in Xenial: In Progress Bug description: When I install Ubuntu 16.04 on my computer the screen goes blank at login. I can blindly login and it boots but I cannot use the display (external monitor through HDMI). I've looked online for an answer to this issue but could not find a solution. However, many people report this issue in forums with the 4.4x kernel. On my main computer, I upgraded from 14.04 to 16.04.1. On this computer I was able to switch back to the 3.13 kernel which *does work*. On the same computer, if I use a 16.04 live CD, it does the same thing. The screen goes blank. UEFI may be part of the issue as well. I have it disabled in bios (set to legacy mode) but when I first boot, it seems to go into UEFI mode first and then, after rebooting with <ctrl><alt><delete> it shows me the list of kernels. I can select the kernel from there but if I use a 4.4x kernel, it blanks out at encryption passphrase screen. There are also people with similar issues on AskUbuntu. Here's some basic HW info. If you require more, please ask. sudo lshw | head zbox description: Notebook product: ZBOX-ID18 (NA) vendor: ZOTAC version: XX serial: GXXXX211XXXXX width: 64 bits capabilities: smbios-2.7 dmi-2.7 vsyscall32 configuration: boot=normal chassis=notebook family=NA sku=NA uuid=00020003-0004-0005-0006-000700080009 *-core sudo lshw -C display *-display description: VGA compatible controller product: 3rd Gen Core processor Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:45 memory:f7800000-f7bfffff memory:e0000000-efffffff ioport:f000(size=64) lsb_release -rd Description: Ubuntu 16.04.1 LTS Release: 16.04 --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: rmezger 5536 F.... pulseaudio DistroRelease: Ubuntu 16.04 HibernationDevice: #RESUME=UUID=edaa55c6-eb56-43fb-8004-495948b72b38 InstallationDate: Installed on 2014-07-23 (743 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140313) MachineType: ZOTAC ZBOX-ID18 Package: linux (not installed) ProcEnviron: LANGUAGE=en_US TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-92-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash ProcVersionSignature: Ubuntu 3.13.0-92.139-generic 3.13.11-ckt39 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.13.0-92-generic N/A linux-backports-modules-3.13.0-92-generic N/A linux-firmware 1.157.2 RfKill: StagingDrivers: rts5139 Tags: xenial staging Uname: Linux 3.13.0-92-generic x86_64 UpgradeStatus: Upgraded to xenial on 2016-07-31 (3 days ago) UserGroups: _MarkForUpload: True dmi.bios.date: 03/13/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: B211P011 dmi.board.asset.tag: NA dmi.board.name: ZBOX-ID18 dmi.board.vendor: ZOTAC dmi.board.version: XX dmi.chassis.asset.tag: NA dmi.chassis.type: 10 dmi.chassis.vendor: NA dmi.chassis.version: NA dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrB211P011:bd03/13/2014:svnZOTAC:pnZBOX-ID18:pvrXX:rvnZOTAC:rnZBOX-ID18:rvrXX:cvnNA:ct10:cvrNA: dmi.product.name: ZBOX-ID18 dmi.product.version: XX dmi.sys.vendor: ZOTAC To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1609242/+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
