Estou executando o Ubuntu 17.10 com o Gnome 3 Desktop no Microsoft Azure e uso o xrdp para se conectar. A caixa funciona muito bem, até eu clicar em 'bloqueio de tela', que irá acionar abaixo do erro e irá repetir e repetir novamente em /var/log/syslog
Eu encontro Can't initialize KMS backend no meu arquivo de log. então o que é KMS ?
Aqui estão alguns destaques do log de erros
Apr 7 14:45:18 ubuntu1710 /usr/lib/gdm3/gdm-x-session[26236]: (EE)
Apr 7 14:45:18 ubuntu1710 /usr/lib/gdm3/gdm-x-session[26236]: Fatal server error:
Apr 7 14:45:18 ubuntu1710 systemd[1]: Stopping User Manager for UID 121...
Apr 7 14:45:18 ubuntu1710 /usr/lib/gdm3/gdm-x-session[26236]: (EE) no screens found(EE)
Apr 7 14:45:18 ubuntu1710 /usr/lib/gdm3/gdm-x-session[26236]: (EE)
Apr 7 14:45:18 ubuntu1710 /usr/lib/gdm3/gdm-x-session[26236]: Please consult the The X.Org Foundation support
Apr 7 14:45:18 ubuntu1710 /usr/lib/gdm3/gdm-x-session[26236]: #011 at http://wiki.x.org
Apr 7 14:45:18 ubuntu1710 /usr/lib/gdm3/gdm-x-session[26236]: for help.
Apr 7 14:45:18 ubuntu1710 dbus-daemon[26251]: Activating service name='org.gnome.ScreenSaver'
Apr 7 14:45:18 ubuntu1710 org.gnome.ScreenSaver[26251]: Unable to init server: Could not connect: Connection refused
Apr 7 14:45:18 ubuntu1710 gnome-screensav[26259]: Cannot open display:
Apr 7 14:45:18 ubuntu1710 systemd[1]: Started User Manager for UID 121.
Apr 7 14:45:18 ubuntu1710 systemd[26243]: Started D-Bus User Message Bus.
Apr 7 14:45:18 ubuntu1710 dbus-daemon[26251]: Activating service name='org.gnome.ScreenSaver'
Apr 7 14:45:18 ubuntu1710 org.gnome.ScreenSaver[26251]: Unable to init server: Could not connect: Connection refused
Apr 7 14:45:18 ubuntu1710 gnome-screensav[26259]: Cannot open display:
Apr 7 14:45:18 ubuntu1710 dbus-daemon[26251]: Activated service 'org.gnome.ScreenSaver' failed: Process org.gnome.ScreenSaver exited with status 1
Apr 7 14:45:18 ubuntu1710 gnome-session[26253]: gnome-session-binary[26253]: CRITICAL: Unable to create a DBus proxy for GnomeScreensaver: Error calling StartServiceByName for org.gnome.ScreenSaver: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.gnome.ScreenSaver exited with status 1
Apr 7 14:45:18 ubuntu1710 gnome-session-binary[26253]: CRITICAL: Unable to create a DBus proxy for GnomeScreensaver: Error calling StartServiceByName for org.gnome.ScreenSaver: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.gnome.ScreenSaver exited with status 1
Apr 7 14:45:18 ubuntu1710 gnome-shell[26261]: Can't initialize KMS backend: could not find drm kms device
Apr 7 14:45:18 ubuntu1710 gnome-session[26253]: gnome-session-binary[26253]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
Apr 7 14:45:18 ubuntu1710 gnome-session-binary[26253]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
Apr 7 14:45:18 ubuntu1710 gnome-session-binary[26253]: Unrecoverable failure in required component org.gnome.Shell.desktop
Apr 7 14:45:18 ubuntu1710 gdm3: GdmDisplay: display lasted 0.376557 seconds
Apr 7 14:45:18 ubuntu1710 gdm3: Child process -26249 was already dead.
Apr 7 14:45:18 ubuntu1710 gdm3: Child process 26240 was already dead.
Apr 7 14:45:18 ubuntu1710 systemd[1]: Stopping User Manager for UID 121...
Apr 7 14:45:18 ubuntu1710 gdm3: Unable to kill session worker process
Abaixo está o log completo
/usr/lib/gdm3/gdm-x-session[26236]: X.Org X Server 1.19.5
/usr/lib/gdm3/gdm-x-session[26236]: Release Date: 2017-10-12
/usr/lib/gdm3/gdm-x-session[26236]: X Protocol Version 11, Revision 0
/usr/lib/gdm3/gdm-x-session[26236]: Build Operating System: Linux 4.4.0-97-generic x86_64 Ubuntu
/usr/lib/gdm3/gdm-x-session[26236]: Current Operating System: Linux ubuntu1710 4.13.0-38-generic #43-Ubuntu SMP Wed Mar 14 15:20:44 UTC 2018 x86_64
/usr/lib/gdm3/gdm-x-session[26236]: Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.13.0-38-generic root=UUID=5eda347a-0f69-460e-bebc-e2f1700a6ff3 ro console=tty1 console=ttyS0 earlyprintk=ttyS0 rootdelay=300
/usr/lib/gdm3/gdm-x-session[26236]: Build Date: 15 October 2017 05:51:19PM
/usr/lib/gdm3/gdm-x-session[26236]: xorg-server 2:1.19.5-0ubuntu2 (For technical support please see http://www.ubuntu.com/support)
/usr/lib/gdm3/gdm-x-session[26236]: Current version of pixman: 0.34.0
/usr/lib/gdm3/gdm-x-session[26236]: #011Before reporting problems, check http://wiki.x.org
/usr/lib/gdm3/gdm-x-session[26236]: #011to make sure that you have the latest version.
/usr/lib/gdm3/gdm-x-session[26236]: Markers: (--) probed, (**) from config file, (==) default setting,
/usr/lib/gdm3/gdm-x-session[26236]: #011(++) from command line, (!!) notice, (II) informational,
/usr/lib/gdm3/gdm-x-session[26236]: #011(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
/usr/lib/gdm3/gdm-x-session[26236]: (==) Log file: "/var/lib/gdm3/.local/share/xorg/Xorg.0.log", Time: Sat Apr 7 14:45:18 2018
/usr/lib/gdm3/gdm-x-session[26236]: (==) Using system config directory "/usr/share/X11/xorg.conf.d"
/usr/lib/gdm3/gdm-x-session[26236]: (==) No Layout section. Using the first Screen section.
/usr/lib/gdm3/gdm-x-session[26236]: (==) No screen section available. Using defaults.
/usr/lib/gdm3/gdm-x-session[26236]: (**) |-->Screen "Default Screen Section" (0)
/usr/lib/gdm3/gdm-x-session[26236]: (**) | |-->Monitor "<default monitor>"
/usr/lib/gdm3/gdm-x-session[26236]: (==) No monitor specified for screen "Default Screen Section".
/usr/lib/gdm3/gdm-x-session[26236]: #011Using a default monitor configuration.
/usr/lib/gdm3/gdm-x-session[26236]: (==) Automatically adding devices
/usr/lib/gdm3/gdm-x-session[26236]: (==) Automatically enabling devices
/usr/lib/gdm3/gdm-x-session[26236]: (==) Automatically adding GPU devices
/usr/lib/gdm3/gdm-x-session[26236]: (==) Automatically binding GPU devices
/usr/lib/gdm3/gdm-x-session[26236]: (==) Max clients allowed: 256, resource mask: 0x1fffff
/usr/lib/gdm3/gdm-x-session[26236]: (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
/usr/lib/gdm3/gdm-x-session[26236]: #011Entry deleted from font path.
/usr/lib/gdm3/gdm-x-session[26236]: (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
/usr/lib/gdm3/gdm-x-session[26236]: #011Entry deleted from font path.
/usr/lib/gdm3/gdm-x-session[26236]: (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
/usr/lib/gdm3/gdm-x-session[26236]: #011Entry deleted from font path.
/usr/lib/gdm3/gdm-x-session[26236]: (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
/usr/lib/gdm3/gdm-x-session[26236]: #011Entry deleted from font path.
/usr/lib/gdm3/gdm-x-session[26236]: (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
/usr/lib/gdm3/gdm-x-session[26236]: #011Entry deleted from font path.
/usr/lib/gdm3/gdm-x-session[26236]: (==) FontPath set to:
/usr/lib/gdm3/gdm-x-session[26236]: #011/usr/share/fonts/X11/misc,
/usr/lib/gdm3/gdm-x-session[26236]: #011/usr/share/fonts/X11/Type1,
/usr/lib/gdm3/gdm-x-session[26236]: #011built-ins
/usr/lib/gdm3/gdm-x-session[26236]: (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
/usr/lib/gdm3/gdm-x-session[26236]: (II) The server relies on udev to provide the list of input devices.
/usr/lib/gdm3/gdm-x-session[26236]: #011If no devices become available, reconfigure udev or disable AutoAddDevices.
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loader magic: 0x559e8cb06020
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module ABI versions:
/usr/lib/gdm3/gdm-x-session[26236]: #011X.Org ANSI C Emulation: 0.4
/usr/lib/gdm3/gdm-x-session[26236]: #011X.Org Video Driver: 23.0
/usr/lib/gdm3/gdm-x-session[26236]: #011X.Org XInput driver : 24.1
/usr/lib/gdm3/gdm-x-session[26236]: #011X.Org Server Extension : 10.0
/usr/lib/gdm3/gdm-x-session[26236]: (++) using VT number 1
/usr/lib/gdm3/gdm-x-session[26236]: (II) systemd-logind: took control of session /org/freedesktop/login1/session/c1109
/usr/lib/gdm3/gdm-x-session[26236]: (--) PCI:*(0:0:8:0) 1414:5353:0000:0000 rev 0, Mem @ 0xf8000000/67108864, BIOS @ 0x????????/131072
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "glx"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module glx: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.5, module version = 1.0.0
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Server Extension, version 10.0
/usr/lib/gdm3/gdm-x-session[26236]: (==) Matched modesetting as autoconfigured driver 0
/usr/lib/gdm3/gdm-x-session[26236]: (==) Matched fbdev as autoconfigured driver 1
/usr/lib/gdm3/gdm-x-session[26236]: (==) Matched vesa as autoconfigured driver 2
/usr/lib/gdm3/gdm-x-session[26236]: (==) Assigned the driver to the xf86ConfigLayout
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "modesetting"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module modesetting: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.5, module version = 1.19.5
/usr/lib/gdm3/gdm-x-session[26236]: #011Module class: X.Org Video Driver
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "fbdev"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module fbdev: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.3, module version = 0.4.4
/usr/lib/gdm3/gdm-x-session[26236]: #011Module class: X.Org Video Driver
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "vesa"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module vesa: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.3, module version = 2.3.4
/usr/lib/gdm3/gdm-x-session[26236]: #011Module class: X.Org Video Driver
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (II) modesetting: Driver for Modesetting Kernel Drivers: kms
/usr/lib/gdm3/gdm-x-session[26236]: (II) FBDEV: driver for framebuffer: fbdev
/usr/lib/gdm3/gdm-x-session[26236]: (II) VESA: driver for VESA chipsets: vesa
/usr/lib/gdm3/gdm-x-session[26236]: xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/dri/card0: No such file or directory
/usr/lib/gdm3/gdm-x-session[26236]: (WW) Falling back to old probe method for modesetting
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/dri/card0: No such file or directory
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading sub module "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module fbdevhw: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.5, module version = 0.0.2
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/fb0: Permission denied
/usr/lib/gdm3/gdm-x-session[26236]: (WW) Falling back to old probe method for fbdev
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading sub module "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module fbdevhw: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.5, module version = 0.0.2
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/fb0: Permission denied
/usr/lib/gdm3/gdm-x-session[26236]: vesa: Ignoring device with a bound kernel driver
/usr/lib/gdm3/gdm-x-session[26236]: (WW) Falling back to old probe method for vesa
/usr/lib/gdm3/gdm-x-session[26236]: (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Screen 0 deleted because of no matching config section.
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "modesetting"
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Screen 0 deleted because of no matching config section.
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "fbdev"
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadSubModule: "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Screen 0 deleted because of no matching config section.
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "vesa"
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Device(s) detected, but none match those in the config file.
/usr/lib/gdm3/gdm-x-session[26236]: (==) Matched modesetting as autoconfigured driver 0
/usr/lib/gdm3/gdm-x-session[26236]: (==) Matched fbdev as autoconfigured driver 1
/usr/lib/gdm3/gdm-x-session[26236]: (==) Matched vesa as autoconfigured driver 2
/usr/lib/gdm3/gdm-x-session[26236]: (==) Assigned the driver to the xf86ConfigLayout
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "modesetting"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module modesetting: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.5, module version = 1.19.5
/usr/lib/gdm3/gdm-x-session[26236]: #011Module class: X.Org Video Driver
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "modesetting"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Unloading modesetting
/usr/lib/gdm3/gdm-x-session[26236]: (II) Failed to load module "modesetting" (already loaded, 21918)
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "fbdev"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module fbdev: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.3, module version = 0.4.4
/usr/lib/gdm3/gdm-x-session[26236]: #011Module class: X.Org Video Driver
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "fbdev"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Unloading fbdev
/usr/lib/gdm3/gdm-x-session[26236]: (II) Failed to load module "fbdev" (already loaded, 21918)
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "vesa"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module vesa: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.3, module version = 2.3.4
/usr/lib/gdm3/gdm-x-session[26236]: #011Module class: X.Org Video Driver
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "vesa"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Unloading vesa
/usr/lib/gdm3/gdm-x-session[26236]: (II) Failed to load module "vesa" (already loaded, 21918)
/usr/lib/gdm3/gdm-x-session[26236]: (II) modesetting: Driver for Modesetting Kernel Drivers: kms
/usr/lib/gdm3/gdm-x-session[26236]: (II) FBDEV: driver for framebuffer: fbdev
/usr/lib/gdm3/gdm-x-session[26236]: (II) VESA: driver for VESA chipsets: vesa
/usr/lib/gdm3/gdm-x-session[26236]: xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/dri/card0: No such file or directory
/usr/lib/gdm3/gdm-x-session[26236]: (WW) Falling back to old probe method for modesetting
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/dri/card0: No such file or directory
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading sub module "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module fbdevhw: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.5, module version = 0.0.2
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/fb0: Permission denied
/usr/lib/gdm3/gdm-x-session[26236]: (WW) Falling back to old probe method for fbdev
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading sub module "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) LoadModule: "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
/usr/lib/gdm3/gdm-x-session[26236]: (II) Module fbdevhw: vendor="X.Org Foundation"
/usr/lib/gdm3/gdm-x-session[26236]: #011compiled for 1.19.5, module version = 0.0.2
/usr/lib/gdm3/gdm-x-session[26236]: #011ABI class: X.Org Video Driver, version 23.0
/usr/lib/gdm3/gdm-x-session[26236]: (EE) open /dev/fb0: Permission denied
/usr/lib/gdm3/gdm-x-session[26236]: vesa: Ignoring device with a bound kernel driver
/usr/lib/gdm3/gdm-x-session[26236]: (WW) Falling back to old probe method for vesa
/usr/lib/gdm3/gdm-x-session[26236]: (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Screen 0 deleted because of no matching config section.
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "modesetting"
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Screen 0 deleted because of no matching config section.
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "fbdev"
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadSubModule: "fbdevhw"
/usr/lib/gdm3/gdm-x-session[26236]: message repeated 2 times: [ (II) UnloadSubModule: "fbdevhw"]
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Screen 0 deleted because of no matching config section.
/usr/lib/gdm3/gdm-x-session[26236]: (II) UnloadModule: "vesa"
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Device(s) detected, but none match those in the config file.
/usr/lib/gdm3/gdm-x-session[26236]: (EE)
/usr/lib/gdm3/gdm-x-session[26236]: Fatal server error:
systemd[1]: Stopping User Manager for UID 121...
/usr/lib/gdm3/gdm-x-session[26236]: (EE) no screens found(EE)
/usr/lib/gdm3/gdm-x-session[26236]: (EE)
/usr/lib/gdm3/gdm-x-session[26236]: Please consult the The X.Org Foundation support
/usr/lib/gdm3/gdm-x-session[26236]: #011 at http://wiki.x.org
/usr/lib/gdm3/gdm-x-session[26236]: for help.
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Please also check the log file at "/var/lib/gdm3/.local/share/xorg/Xorg.0.log" for additional information.
/usr/lib/gdm3/gdm-x-session[26236]: (EE)
/usr/lib/gdm3/gdm-x-session[26236]: (EE) Server terminated with error (1). Closing log file.
systemd[26224]: Stopped target Default.
gdm3: Child process -26236 was already dead.
/usr/lib/gdm3/gdm-x-session[26236]: Unable to run X server
systemd[26224]: Stopped target Basic System.
gdm3: Child process 26220 was already dead.
systemd[26224]: Stopped target Sockets.
gdm3: Unable to kill session worker process
systemd[26224]: Closed Sound System.
systemd[26224]: Stopped target Timers.
systemd[26224]: Stopped target Paths.
systemd[26224]: Closed D-Bus User Message Bus Socket.
systemd[26224]: Reached target Shutdown.
systemd[26224]: Starting Exit the Session...
systemd[26224]: Received SIGRTMIN+24 from PID 26239 (kill).
systemd[1]: Stopped User Manager for UID 121.
systemd[1]: Removed slice User Slice of gdm.
systemd[1]: Created slice User Slice of gdm.
systemd[1]: Starting User Manager for UID 121...
systemd[1]: Started Session c1110 of user gdm.
systemd[26243]: Listening on Sound System.
systemd[26243]: Reached target Timers.
systemd[26243]: Reached target Paths.
systemd[26243]: Starting D-Bus User Message Bus Socket.
systemd[26243]: Listening on D-Bus User Message Bus Socket.
systemd[26243]: Reached target Sockets.
systemd[26243]: Reached target Basic System.
systemd[26243]: Reached target Default.
systemd[26243]: Startup finished in 32ms.
systemd[1]: Started User Manager for UID 121.
systemd[26243]: Started D-Bus User Message Bus.
dbus-daemon[26251]: Activating service name='org.gnome.ScreenSaver'
org.gnome.ScreenSaver[26251]: Unable to init server: Could not connect: Connection refused
gnome-screensav[26259]: Cannot open display:
dbus-daemon[26251]: Activated service 'org.gnome.ScreenSaver' failed: Process org.gnome.ScreenSaver exited with status 1
gnome-session[26253]: gnome-session-binary[26253]: CRITICAL: Unable to create a DBus proxy for GnomeScreensaver: Error calling StartServiceByName for org.gnome.ScreenSaver: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.gnome.ScreenSaver exited with status 1
gnome-session-binary[26253]: CRITICAL: Unable to create a DBus proxy for GnomeScreensaver: Error calling StartServiceByName for org.gnome.ScreenSaver: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.gnome.ScreenSaver exited with status 1
gnome-shell[26261]: Can't initialize KMS backend: could not find drm kms device
gnome-session[26253]: gnome-session-binary[26253]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
gnome-session-binary[26253]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1
gnome-session-binary[26253]: Unrecoverable failure in required component org.gnome.Shell.desktop
gdm3: GdmDisplay: display lasted 0.376557 seconds
gdm3: Child process -26249 was already dead.
gdm3: Child process 26240 was already dead.
systemd[1]: Stopping User Manager for UID 121...
gdm3: Unable to kill session worker process
systemd[26243]: Stopping D-Bus User Message Bus...
systemd[26243]: Stopped target Default.
systemd[26243]: Stopped D-Bus User Message Bus.
systemd[26243]: Stopped target Basic System.
systemd[26243]: Stopped target Timers.
systemd[26243]: Stopped target Paths.
systemd[26243]: Stopped target Sockets.
systemd[26243]: Closed Sound System.
systemd[26243]: Closed D-Bus User Message Bus Socket.
systemd[26243]: Reached target Shutdown.
systemd[26243]: Starting Exit the Session...
systemd[26243]: Received SIGRTMIN+24 from PID 26267 (kill).
systemd[1]: Stopped User Manager for UID 121.
systemd[1]: Removed slice User Slice of gdm.
systemd[1]: Created slice User Slice of gdm.
systemd[1]: Starting User Manager for UID 121...
systemd[1]: Started Session c1111 of user gdm.
systemd[26270]: Starting D-Bus User Message Bus Socket.
systemd[26270]: Reached target Timers.
systemd[26270]: Listening on Sound System.
systemd[26270]: Reached target Paths.
systemd[26270]: Listening on D-Bus User Message Bus Socket.
systemd[26270]: Reached target Sockets.
systemd[26270]: Reached target Basic System.
systemd[26270]: Reached target Default.
systemd[26270]: Startup finished in 34ms.
systemd[1]: Started User Manager for UID 121.
/usr/lib/gdm3/gdm-x-session[26276]: (--) Log file renamed from "/var/lib/gdm3/.local/share/xorg/Xorg.pid-26278.log" to "/var/lib/gdm3/.local/share/xorg/Xorg.0.log"