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 Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1672033 Title: Xorg does not work in rootless mode on nvidia proprietary drivers (GNOME) Status in NVIDIA Drivers Ubuntu: New Status in mutter package in Ubuntu: New Status in xorg package in Ubuntu: New Bug description: There are two bug reports in LP: #1559576, LP: #1632322 and also LP: #1666664, where GDM does not start on proprietary nvidia drivers. As it turned out, the reason for that was Xorg starting in rootless mode and apparently not initializing everything properly, which was causing gnome-shell/libmutter to crash. Installing xserver-xorg-legacy did partially fix those issues. Enabling modesetting for nvidia driver however still causes the problem. Here are some parts from log: Xorg startup: Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (--) Log file renamed from "/var/lib/gdm3/.local/share/xorg/Xorg.pid-2027.log" to "/var/lib/gdm3/.local/share/xorg/Xorg.0.log" Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: X.Org X Server 1.18.4 Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: Release Date: 2016-07-19 Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: X Protocol Version 11, Revision 0 Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: Build Operating System: Linux 4.4.0-53-generic x86_64 Ubuntu glx loaded: Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) LoadModule: "glx" Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/libglx.so Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) Module glx: vendor="NVIDIA Corporation" Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: compiled for 4.0.2, module version = 1.0.0 Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: Module class: X.Org Server Extension Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) NVIDIA GLX Module 375.39 Tue Jan 31 19:37:12 PST 2017 nvidia loaded: Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) LoadModule: "nvidia" Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) Module nvidia: vendor="NVIDIA Corporation" Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: compiled for 4.0.2, module version = 1.0.0 Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: Module class: X.Org Video Driver modesetting loaded: Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) LoadModule: "modesetting" Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) Module modesetting: vendor="X.Org Foundation" Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: compiled for 1.18.4, module version = 1.18.4 Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: Module class: X.Org Video Driver Mär 11 00:43:18 arvlin /usr/lib/gdm3/gdm-x-session[2025]: ABI class: X.Org Video Driver, version 20.0 gnome-shell fails to run: Mär 11 00:43:20 arvlin kernel: gnome-shell[2067]: segfault at 28 ip 00007fedba8da7c4 sp 00007ffd2fb5f5a0 error 4 in libmutter-0.so.0.0.0[7fedba893000+12f000] xorg stops: Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) UnloadModule: "libinput" Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) systemd-logind: releasing fd for 13:66 Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) UnloadModule: "libinput" Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) systemd-logind: releasing fd for 13:67 Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) UnloadModule: "libinput" Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) systemd-logind: releasing fd for 13:64 Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) UnloadModule: "libinput" Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) systemd-logind: releasing fd for 13:65 Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) NVIDIA(GPU-0): Deleting GPU-0 Mär 11 00:43:21 arvlin /usr/lib/gdm3/gdm-x-session[2025]: (II) Server terminated successfully (0). Closing log file. Mär 11 00:43:21 arvlin gdm-launch-environment][2009]: pam_unix(gdm-launch-environment:session): session closed for user gdm To manage notifications about this bug go to: https://bugs.launchpad.net/nvidia-drivers-ubuntu/+bug/1672033/+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
