> If you need modeset=1 for wayland, then why is there any effort to support nvidia and wayland under gnome, since it won't work (or are only optimus systems affected by this?)
I don't understand the question, sorry. The statement "it won't work" is wrong. Wayland does work. This bug is about Xorg, not Wayland. > So it looks like a gdm3 bug. Yes I understand that's how it looks, but we have established the root cause of this bug is in the Nvidia driver. Maybe we will be able to work around it with some gdm3 change, but that's not where the root cause of the problem is. Other display managers are managing to work around the Nvidia driver bug here because they run as root. gdm3 does not run as root because it is trying to be more secure and avoid running as root. Calling this a gdm3 bug is probably wrong. I can reproduce the bug without gdm3. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-375 in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1 results in no 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
