I have the same issue on Ubuntu 17.04 with Nvidia 375.66. Using two 1920x1200 display connected to Thinkpad Docking Station 230W with Displayport. Then I'm using the default monitor in Thinkpad P51, 1920x1080p.
In Ubuntu I have hard time getting all three displays to work, once they work I can't adjust any display settings (e.g. moving one monitor to the right side of another), without everything chrashing and I have to restart lightdm in terminal view. However I'm capable of getting triple monitor setup correct in i3wm, and then using arandr as setup, but my laptop monitor (which is not set as primary), kinda works like an extension to my primary monitor, the workspaces works fine on all three monitors but when I'm opening e.g. rofi or dmenu on my laptop it stretches over all screens (dmenu doesn't even open), but when I go to one of the two connected monitors it works just fine. If you need any files please tell. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers-361 in Ubuntu. https://bugs.launchpad.net/bugs/1615734 Title: Multiple monitors broken Status in nvidia-graphics-drivers-361 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-367 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-375 package in Ubuntu: Confirmed Bug description: I have a Lenovo P50 with Nvidia Optimus (Quadro M1000M), installed with Ubuntu 16.04 and the recommended Nvidia drivers (361.42). I added two external monitors connected to DP sockets in the docking station. I would like to have display shift to those two monitors when the laptop is docked. One monitor has native resolution of 1680x1050 and the other is 1920x1080. The laptop native resolution is 1920x1080. Expected result: laptop monitor shut off, two external monitors running in native resolution, display shared on both monitors (not mirrored). Process: I configured the display using the "Displays" applet in the unity control center. However, pressing "Apply" when changing a specific display setting (such as resolution, location of screen relative to others, turning on/off), results in a long period of darkness, usually followed by display falling back to mirroring of all 3 monitors, using a similar-size screen (either low on all or high on all with the low-res monitor using panning). The applet remains frozen for some time, with the dialog "Is the display ok" open but unresponsive. Later I realized this is because there is another dialog of "Cannot set screen CRTCXXX" hidden under the two above windows, which needs to by ok-ed first. Extra: I also tried setting the display manually with 'xrandr', which lead to a similar result as above - with the "cannot set screen" dialog, and falling back to mirroring. This convinced me that the problem is probably with the nvidia driver and not the higher plumbing. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: nvidia-361 361.42-0ubuntu2 ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15 Uname: Linux 4.4.0-34-generic x86_64 NonfreeKernelModules: symap_custom_dkms_x86_64 nvidia_uvm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: Unity Date: Mon Aug 22 19:14:55 2016 InstallationDate: Installed on 2016-07-17 (36 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) SourcePackage: nvidia-graphics-drivers-361 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-361/+bug/1615734/+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
