Jeremy Soller's fix to edit Xwrapper seems to be good. The edits to the gdm service cause a crash to happen on boot.
Currently using an HP Laptop with an Intel CPU and Nvidia GPU that I believe is Optimus. I have the proprietary Nvidia driver running on nvidia-driver-430 as of this comment's date. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-418 in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1, gdm3 and optimus laptop results in no external monitors detected by Xorg Status in gdm3 package in Ubuntu: Opinion Status in nvidia-graphics-drivers-375 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-418 package in Ubuntu: Confirmed Bug description: Context: 17.10 development packages, nvidia binary driver 375, modeset=1 for the nvidia driver. ubuntu desktop (gnome shell), fresh install ThinkPad W520 in Nvidia Optimus bios mode. Nvidia profile. Result: no external monitors are detected. xrandr does not even list them as disconnected (normally it would list five external disconnected monitors) lsmod shows that nvidia driver is loaded and the modesetting is working at some level because there is no tearing on the laptop panel Note: modeset=1 is the only way to get flicker-free graphics on the laptop panel. modeset=1 is not the default setting but it is highly desirable. It works if lightdm is used which is why I have reported this against gdm3 My sessions in this configuration have mostly crashed after a few minutes with a gdm3 fail whale message in syslog but nothing else looks interesting. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+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
