Hello, I found this issue has something to do with the "Enable Switchable Graphics" option in the BIOS If Enabled, it will make another graphical controller (Intel) available. And this issue would happen.
If disabled, there will be only one nVidia video there, and this won't happen. Verified on 201305-13527, 14.04.1 (3.13.0-44) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1378744 Title: nVidia GK106GLM [Quadro K2100M] [10de:11fc] Connect to HDMI / DP port with open-source driver will cause Xorg crash Status in Accelerated Xorg driver for nVidia cards: Confirmed Status in linux package in Ubuntu: Incomplete Status in xserver-xorg-video-nouveau package in Ubuntu: New Bug description: CID: 201305-13527 Dell Precision M4800 Xorg would crash and restart (you will see the login screen again and again) when the HDMI / DP cable is connected to the system. Steps: 1. Install 14.04 + update (3.13.0-36), boot to desktop 2. Connect a HDMI / DP cable Expected result: * The external monitor should work Actual result: * The external monitor screen is black, and the Xorg crashed -> black screen on this laptop -> login screen shows up -> black screen... repeat. WORKAROUND: * Install the proprietary nvidia driver I'm not sure if this should be consider as a blocker. But hey, we need to certified this I+N system with the proprietary driver, I think it's OK to not to call this a blocker. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-36-generic 3.13.0-36.63 ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6 Uname: Linux 3.13.0-36-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 7071 F.... pulseaudio ubuntu 7529 F.... pulseaudio /dev/snd/controlC1: ubuntu 7071 F.... pulseaudio ubuntu 7529 F.... pulseaudio CRDA: country TW: (2402 - 2472 @ 40), (3, 27) (5270 - 5330 @ 40), (3, 17), DFS (5735 - 5815 @ 40), (3, 30) CurrentDesktop: Unity Date: Wed Oct 8 06:20:44 2014 HibernationDevice: RESUME=UUID=46ed949d-eff8-48e9-b337-6425f480cf12 InstallationDate: Installed on 2014-10-08 (0 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Dell Inc. Precision M4800 ProcFB: 0 inteldrmfb 1 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-36-generic.efi.signed root=UUID=e7f55d08-44a4-447e-8fc6-563864d60df4 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-36-generic N/A linux-backports-modules-3.13.0-36-generic N/A linux-firmware 1.127.7 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/02/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A06 dmi.board.name: 0FVDR2 dmi.board.vendor: Dell Inc. dmi.board.version: X02 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA06:bd01/02/2014:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn0FVDR2:rvrX02:cvnDellInc.:ct9:cvr: dmi.product.name: Precision M4800 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1378744/+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
