Here is another observation (my old workaround): - KMS is enabled, gdm starts in wayland mode. Trying to start gnome- shell in Xorg mode fails (gnome-shell/mutter crash).
- Switch to tty (ctrl+alt+f2), login and start: - $ sudo lightdm --test-mode - lightdm is starting, nvidia logo appears for a moment - Switch back to tty once again and kill lightdm (ctrl+c) - Switch back to GDM (ctrl+alt+f1) - Login in gnome-shell Xorg session: everything works fine at this moment. The question is what lightdm does, that gdm doesn't? New messages in logs during xorg startup after executing lightdm are: /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): Valid display device(s) on GPU-0 at PCI:3:0:0 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-0 (boot) /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-1 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-2 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-3 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-4 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-5 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-6 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DFP-7 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DELL U2412M (DFP-0): connected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DELL U2412M (DFP-0): Internal TMDS /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DELL U2412M (DFP-0): 330.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-1: disconnected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-1: Internal TMDS /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-2: disconnected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-2: 1440.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-3: disconnected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-3: Internal TMDS /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-3: 165.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-4: disconnected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-4: Internal DisplayPort /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-4: 1440.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-5: disconnected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-5: Internal TMDS /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-5: 165.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-6: disconnected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-6: Internal DisplayPort /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-6: 1440.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-7: disconnected /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-7: Internal TMDS /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): DFP-7: 165.0 MHz maximum pixel clock /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(GPU-0): /usr/lib/gdm3/gdm-x-session: (==) NVIDIA(0): /usr/lib/gdm3/gdm-x-session: (==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select" /usr/lib/gdm3/gdm-x-session: (==) NVIDIA(0): will be used as the requested mode. /usr/lib/gdm3/gdm-x-session: (==) NVIDIA(0): /usr/lib/gdm3/gdm-x-session: (II) NVIDIA(0): Validated MetaModes: /usr/lib/gdm3/gdm-x-session: (II) NVIDIA(0): "DFP-0:nvidia-auto-select" /usr/lib/gdm3/gdm-x-session: (II) NVIDIA(0): Virtual screen size determined to be 1920 x 1200 /usr/lib/gdm3/gdm-x-session: (--) NVIDIA(0): DPI set to (93, 95); computed from "UseEdidDpi" X config -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1672033 Title: Xorg does not work in rootless mode on nvidia proprietary drivers (GNOME) To manage notifications about this bug go to: https://bugs.launchpad.net/nvidia-drivers-ubuntu/+bug/1672033/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
