** Attachment added: "journalctrl when unplugging monitor" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1555434/+attachment/4598801/+files/unplugfail
-- 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/1555434 Title: Black screen/system lockup on 4.4.0-11 Status in linux package in Ubuntu: Incomplete Bug description: https://lists.ubuntu.com/archives/ubuntu-devel- discuss/2016-March/016281.html references xenial freezing when plugging in a 2nd monitor on a 2015 macbook pro. I'm seeing similar freezes when _unplugging_ the 2nd monitor -- the screen turns black and everything is unresponsive. Not sure that it happens every time, but have noticed it multiple times today (first time booting with 4.4.0-11), and have not seen it before today (yesterday was booting 4.4.0-10 and the freeze did not occur). ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-11-generic 4.4.0-11.26 ProcVersionSignature: Ubuntu 4.4.0-11.26-generic 4.4.4 Uname: Linux 4.4.0-11-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jbarnett 2270 F.... pulseaudio /dev/snd/controlC1: jbarnett 2270 F.... pulseaudio CurrentDesktop: GNOME Date: Wed Mar 9 20:31:07 2016 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=dd225ec0-47f4-49d8-a51c-a2547f8eb945 InstallationDate: Installed on 2015-08-21 (201 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150819) MachineType: Apple Inc. MacBookPro11,4 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=/vmlinuz-4.4.0-11-generic.efi.signed root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-11-generic N/A linux-backports-modules-4.4.0-11-generic N/A linux-firmware 1.156 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-02-16 (22 days ago) dmi.bios.date: 06/05/2015 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP114.88Z.0172.B04.1506051511 dmi.board.name: Mac-06F11FD93F0323C5 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro11,4 dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-06F11FD93F0323C5 dmi.modalias: dmi:bvnAppleInc.:bvrMBP114.88Z.0172.B04.1506051511:bd06/05/2015:svnAppleInc.:pnMacBookPro11,4:pvr1.0:rvnAppleInc.:rnMac-06F11FD93F0323C5:rvrMacBookPro11,4:cvnAppleInc.:ct9:cvrMac-06F11FD93F0323C5: dmi.product.name: MacBookPro11,4 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1555434/+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