The issue persists with kernel 4.6-rc4. However it disappears (fixed?) with the intel nightly drivers as of April 16th 2016 (from http://kernel.ubuntu.com/~kernel-ppa/mainline/drm- intel-nightly/2016-04-16-wily/ ).
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1566759 Title: Full system lockup after attaching external monitor Status in xorg package in Ubuntu: New Bug description: Running on a recently acquired Lenovo Yoga 260. How to reproduce: 1. plug external screen 2. activate/configure monitor (either using GUI or xrandr) 3. set relative position of ext monitor to something else than the default (e.g. above or below) 4. move cursor from laptop screen to external screen 5. move cursor back from extrernal screen to laptop screen At this point a full system freeze occurs. Cannot switch to console, no kernel error (crashkernel does not activate), no trace in dmesg/Xorg.log etc. Even remote ssh sessions onto the computer freeze, so no extra information can be gathered this way. The lock-up does not occur if any of the steps above are omitted: - no issue if the external monitor is not activated - no issue if the relative position is not changed - no issue if the mouse cursor stays on the laptop screen where it was initially - no issue if the mouse cursor iis moved from the laptop screen to the external screen and stays there **Also the issue does not occur if the external monitor is already plugged before boot, and the resolution and position is only set once upon Xorg start-up**. In other words it is possible to use an external monitor as long as 1) it is plugged before boot 2) the Xorg conf contains explicit entries to set the resolution and position. The issue can be reproduced reliably on both a fresh 15.10 install, any stock Ubuntu kernel, and the mainline PPA kernels (up to and including the latest 4.6-rc2). Also reproduces reliably with both the base intel drivers shipped with 15.10 and those provided by Intel's linux-installer. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 Uname: Linux 4.6.0-040600rc2-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Wed Apr 6 11:31:13 2016 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu ExtraDebuggingInterest: Yes GpuHangFrequency: Continuously GpuHangReproducibility: Yes, I can easily reproduce it GpuHangStarted: Since before I upgraded GraphicsCard: Intel Corporation Sky Lake Integrated Graphics [8086:1916] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:2237] InstallationDate: Installed on 2016-03-13 (23 days ago) InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: LENOVO 20FD0004US ProcEnviron: TERM=screen PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/usr/bin/zsh ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.6.0-040600rc2-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash intel_idle.max_cstate=1 crashkernel=384M-:200M SourcePackage: xorg Symptom: display Title: Xorg freeze UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/05/2015 dmi.bios.vendor: LENOVO dmi.bios.version: N1GET34W (1.11 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FD0004US dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1GET34W(1.11):bd11/05/2015:svnLENOVO:pn20FD0004US:pvrThinkPadYoga260:rvnLENOVO:rn20FD0004US:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20FD0004US dmi.product.version: ThinkPad Yoga 260 dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.65+git20151026.c745e541-0ubuntu0ricotz~wily version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.4-1intel1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.4-1intel1 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.99+git20150521.d64a13eb-0ubuntu0ricotz version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20151202.da9ad388-0ubuntu0sarvatt version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11+git20150926.1ff13a92-0ubuntu0sarvatt xserver.bootTime: Wed Apr 6 11:25:42 2016 xserver.configfile: None xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.17.2-1ubuntu9.1 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1566759/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp