Similar behavior on a Dell Latitude 5470 w/ Intel/AMD Dual graphics with Mint 18.1. Suspend didn't work with the standard kernel (Display dark, total freeze) but 4.5.2 helped. However Plugging in or out the VGA Cable makes it freeze.
Yesterday updated to Kernel 4.8.0-42-generic x86_64 but still freezes when (un-)plugging VGA. A tail on syslog with a kerlen Oops (via ssh before it died) is attached together with output of "inxi -Fxz" ** Attachment added: "kernel oops and inxi output" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559308/+attachment/4844045/+files/dell_kernel_freeze_ubu.txt -- 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/1559308 Title: Plugging HDMI screen in causes system hang Status in linux package in Ubuntu: Fix Released Bug description: I have a 4K UHD laptop screen and am running Ubuntu Gnome 16.04 Beta1 using 4.4.0-13-generic and the Nouveau drivers. If I plug in an external HDMI monitor (FHD) either into either HDMI port (there's one on the machine and there's one available via a usb 3.1 extra adaptor) then the whole system hangs, completely unresponsive and needing a hard reboot. Before hanging the 2nd display gets an image as expected, but the laptop's screen flashes randomly, sometimes you see weird artifacts. Then the hang comes. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xserver-xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-13.29-generic 4.4.5 Uname: Linux 4.4.0-13-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: GNOME Date: Fri Mar 18 20:43:42 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Skylake Integrated Graphics [8086:191b] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Dell Skylake Integrated Graphics [1028:06e4] Subsystem: Dell GM107M [GeForce GTX 960M] [1028:06e4] InstallationDate: Installed on 2016-03-15 (3 days ago) InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160225.1) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f3:21d5 Elan Microelectronics Corp. Bus 001 Device 002: ID 0a5c:6410 Broadcom Corp. Bus 001 Device 004: ID 0c45:6713 Microdia Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 15 9550 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-13-generic.efi.signed root=UUID=b026feed-8801-44f4-9f3f-c245f4a1f25e ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/25/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 01.01.19 dmi.board.name: 0N7TVV dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr01.01.19:bd01/25/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 15 9550 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.1.2-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.1.2-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.1-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.6.1-1ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160218-1ubuntu3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Fri Mar 18 17:28:07 2016 xserver.configfile: default xserver.errors: Failed to load module "nvidia" (module does not exist, 0) Failed to load module "nvidia" (module does not exist, 0) Unknown chipset: NV117 SynPS/2 Synaptics TouchPad: Read error 19 xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 5182 vendor SHP xserver.version: 2:1.18.1-1ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559308/+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