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Hello! I am running Arch on a ThinkPad x1 Carbon with Intel 620 integrated graphics. lightdm fails to start on system boot, causing systemctl to hang at either "Started Accounts Service" or "Reached Target Graphical Interface." However, if I switch to another tty and execute
sudo systemctl restart lightdmthen lightdm will start normally with no apparent issues. Also, if I induce a delay to systemctl by going out of range from my default WiFi network (which causes it to spend extra time searching for the network), then systemctl will be able to start lightdm normally.
Here is /var/log/lightdm/lightdm.log.old (since I've restarted systemctl manually, /var/log/lightdm/lightdm.log just logs a successful session):
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.30.0, UID=0 PID=617
[+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG: Registered seat module local
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ‘gio-vfs’
[+0.00s] DEBUG: Monitoring logind for seats
[+0.00s] DEBUG: New seat added from logind: seat0
[+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.00s] DEBUG: Seat seat0 has property CanMultiSession=no
[+0.00s] DEBUG: Seat seat0: Starting
[+0.00s] DEBUG: Seat seat0: Creating greeter session
[+0.00s] DEBUG: Seat seat0: Creating display server of type x
[+0.00s] DEBUG: Could not run plymouth --ping: Failed to execute child process “plymouth” (No such file or directory)
[+0.00s] DEBUG: Using VT 7
[+0.00s] DEBUG: Seat seat0: Starting local X display on VT 7
[+0.00s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+0.00s] DEBUG: XServer 0: Writing X server authority to /run/lightdm/root/:0
[+0.00s] DEBUG: XServer 0: Launching X Server
[+0.01s] DEBUG: Launching process 623: /usr/bin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.01s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+0.01s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.01s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+0.01s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.01s] DEBUG: User /org/freedesktop/Accounts/User1000 added
[+0.33s] DEBUG: Process 623 terminated with signal 6
[+0.33s] DEBUG: XServer 0: X server stopped
[+0.33s] DEBUG: Releasing VT 7
[+0.33s] DEBUG: XServer 0: Removing X server authority /run/lightdm/root/:0
[+0.33s] DEBUG: Seat seat0: Display server stopped
[+0.33s] DEBUG: Seat seat0: Stopping session
[+0.33s] DEBUG: Seat seat0: Session stopped
[+0.33s] DEBUG: Seat seat0: Stopping display server, no sessions require it
[+0.33s] DEBUG: Seat seat0: Stopping; greeter display server failed to start
[+0.33s] DEBUG: Seat seat0: Stopping
[+0.33s] DEBUG: Seat seat0: Stopped
[+0.33s] DEBUG: Required seat has stopped
[+0.33s] DEBUG: Stopping display manager
[+0.33s] DEBUG: Display manager stopped
[+0.33s] DEBUG: Stopping daemon
[+0.33s] DEBUG: Exiting with return value 1Here is /var/log/Xorg.0.log.old:
[ 10.679]
X.Org X Server 1.20.9
X Protocol Version 11, Revision 0
[ 10.679] Build Operating System: Linux Arch Linux
[ 10.679] Current Operating System: Linux nthink 5.9.8-arch1-1 #1 SMP PREEMPT Tue, 10 Nov 2020 22:44:11 +0000 x86_64
[ 10.679] Kernel command line: \\vmlinuz-linux root=/dev/nvme0n1p5 rw add_efi_memmap initrd=\intel-ucode.img initrd=\initramfs-linux.img
[ 10.679] Build Date: 16 November 2020 12:26:46PM
[ 10.679]
[ 10.679] Current version of pixman: 0.40.0
[ 10.679] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 10.679] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 10.680] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Dec 30 12:22:53 2020
[ 10.680] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 10.680] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 10.680] (==) No Layout section. Using the first Screen section.
[ 10.680] (==) No screen section available. Using defaults.
[ 10.680] (**) |-->Screen "Default Screen Section" (0)
[ 10.680] (**) | |-->Monitor "<default monitor>"
[ 10.681] (==) No device specified for screen "Default Screen Section".
Using the first device section listed.
[ 10.681] (**) | |-->Device "Intel Graphics"
[ 10.681] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 10.681] (==) Automatically adding devices
[ 10.681] (==) Automatically enabling devices
[ 10.681] (==) Automatically adding GPU devices
[ 10.681] (==) Automatically binding GPU devices
[ 10.681] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 10.681] (WW) The directory "/usr/share/fonts/Type1" does not exist.
[ 10.681] Entry deleted from font path.
[ 10.681] (==) FontPath set to:
/usr/share/fonts/misc,
/usr/share/fonts/TTF,
/usr/share/fonts/OTF,
/usr/share/fonts/100dpi,
/usr/share/fonts/75dpi
[ 10.681] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 10.681] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 10.681] (II) Module ABI versions:
[ 10.681] X.Org ANSI C Emulation: 0.4
[ 10.681] X.Org Video Driver: 24.1
[ 10.681] X.Org XInput driver : 24.1
[ 10.681] X.Org Server Extension : 10.0
[ 10.683] (++) using VT number 7
[ 10.683] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 10.685] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 10.685] (II) Platform probe for /sys/devices/pci0000:00/0000:00:02.0/drm/card0
[ 10.702] (EE)
[ 10.702] (EE) Backtrace:
[ 10.702] (EE) 0: /usr/lib/Xorg (xorg_backtrace+0x53) [0x559f0d711bd3]
[ 10.702] (EE) 1: /usr/lib/Xorg (0x559f0d5cb000+0x151a15) [0x559f0d71ca15]
[ 10.702] (EE) 2: /usr/lib/libc.so.6 (0x7f45bd72f000+0x3d6a0) [0x7f45bd76c6a0]
[ 10.703] (EE) 3: /usr/lib/Xorg (xf86BusProbe+0x1c2) [0x559f0d726e32]
[ 10.703] (EE) 4: /usr/lib/Xorg (InitOutput+0xeaa) [0x559f0d73844a]
[ 10.703] (EE) 5: /usr/lib/Xorg (0x559f0d5cb000+0x39426) [0x559f0d604426]
[ 10.703] (EE) 6: /usr/lib/libc.so.6 (__libc_start_main+0xf2) [0x7f45bd757152]
[ 10.703] (EE) 7: /usr/lib/Xorg (_start+0x2e) [0x559f0d6055ae]
[ 10.703] (EE)
[ 10.703] (EE) Segmentation fault at address 0x0
[ 10.703] (EE)
Fatal server error:
[ 10.703] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 10.703] (EE)
[ 10.703] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 10.703] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 10.703] (EE)
[ 10.704] (EE) Server terminated with error (1). Closing log file.Here is my /etc/x11/xorg.conf.d/20-intel.conf:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "Backlight" "intel_backlight"
EndSectionSo far, I have unsuccessfully attempted the following:
Reinstall xf86-video-intel and lightdm.
Add
logind-check-graphical=trueto the [LightDM] section of /etc/lightdm/lightdm.conf. lightdm started correctly the first time I rebooted after making this change, but has failed every time since.
Try using lightdm-webkit2-greeter instead of lightdm-gtk-greeter. Behavior is identical as far as I can tell.
Change /etc/x11/xorg.conf.d/20-intel.conf to add the line
Option "AccelMethod" "uxa"At a glance, this produced identical results, except that the frame rate of lightdm-webkit2-greeter dropped to about 5-10 FPS.
Check for the issue described in the ArchWiki LightDM page under "Boot hangs on OK - Reached target Graphical Interface." /etc/nsswitch.conf does not contain "ldap" anywhere in the file, and I do not recall editing it.
Thank you for your help! If there is any other information I can provide, please let me know.
Last edited by Nolbin (2020-12-30 22:27:13)
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X.Org X Server 1.20.9Can you reproduce the issue on a fully updated system?
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X.Org X Server 1.20.9Can you reproduce the issue on a fully updated system?
Interestingly, that fixed it! I'd previously (weeks ago) tried a full system update to no avail, but after doing it now I can no longer reproduce the issue. Thank you!
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