Lightdm not running correctly

Support
,
1

Hello my lightdm seems to be crashing everytime I start my Pc.
It hangs on boot either after “[OK] started CUPS Scheduler” or at some other point.
I remember the last change I made to my system that could affect something like this was activating Freesync and NoTear.
Also I am running Dual Boot with windows 10 (windows 10 is on another drive though it seems that the Bootloader might be on the same drive as manjaro)

Data I found out is below
If you need more data please ask.

[please be aware I am typing the errors per hand since I cannot acces the desktop and writing a forum post through console is not a thing I am capable of doing nor do I know how to get the copy and pasted stuff out of my pc onto another device]
After ctrl+alt+f3 ‘’‘journalctl --catalog --priority=3 --boot=0’’’ gives me

{date and stuff + name} systemd[1]: Failed to start Light Display Manager.
Subject: A start job for unit lightdm.service has failed
Defined-By: systemd
Support: {manjaro support site url}

A start job for unit lightdm.service has finished with a failure.

The job identifier is 946 and the job result is failed.
{date and stuff + name} systemd-udev[404]: could not read from '/sys/module/amd64_edac/initstate': No such device

sudo lightdm --test-mode --debug
gives this output (cant copy and paste it from there sadly so here is a picture hope it works)

photo_2022-03-19_16-00-13 (2)
photo_2022-03-19_16-00-13 (2)993×561 167 KB

my inxi --admin --verbosity=7 --filter --width (though some data might be old since I am copying this from another older forum post of mine)

Kernel: 5.13.19-2-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
   parameters: BOOT_IMAGE=/boot/vmlinuz-5.13-x86_64
   root=UUID=0bc33de2-959d-433a-8788-244c33b2697f rw quiet apparmor=1
   security=apparmor udev.log_priority=3
 Desktop: Xfce 4.16.0 tk: Gtk 3.24.29 info: xfce4-panel wm: xfwm 4.16.1
   vt: 7 dm: LightDM 1.30.0 Distro: Manjaro Linux base: Arch Linux
Machine:
 Type: Desktop Mobo: ASUSTeK model: PRIME X570-P v: Rev X.0x
   serial: <superuser required> UEFI: American Megatrends v: 4021
   date: 08/09/2021
Battery:
 Message: No system battery data found. Is one present?
Memory:
 RAM: total: 15.54 GiB used: 2.21 GiB (14.2%)
 RAM Report:
   permissions: Unable to run dmidecode. Root privileges required.
CPU:
 Info: model: AMD Ryzen 5 3600 bits: 64 type: MT MCP arch: Zen 2
   family: 0x17 (23) model-id: 0x71 (113) stepping: 0 microcode: 0x8701021
 Topology: cpus: 1x cores: 6 tpc: 2 threads: 12 smt: enabled cache:
   L1: 384 KiB desc: d-6x32 KiB; i-6x32 KiB L2: 3 MiB desc: 6x512 KiB
   L3: 32 MiB desc: 2x16 MiB
 Speed (MHz): avg: 2467 high: 3717 min/max: 2200/4208 boost: enabled
   scaling: driver: acpi-cpufreq governor: schedutil cores: 1: 2911 2: 2057
   3: 2054 4: 2199 5: 2200 6: 2199 7: 3613 8: 3717 9: 2057 10: 2202 11: 2199
   12: 2200 bogomips: 86440
 Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1
   bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy
   constant_tsc cpb cpuid cqm cqm_llc cqm_mbm_local cqm_mbm_total
   cqm_occup_llc cr8_legacy cx16 cx8 de decodeassists extapic extd_apicid
   f16c flushbyasid fma fpu fsgsbase fxsr fxsr_opt ht hw_pstate ibpb ibs
   irperf lahf_lm lbrv lm mba mca mce misalignsse mmx mmxext monitor movbe
   msr mtrr mwaitx nonstop_tsc nopl npt nrip_save nx osvw overflow_recov pae
   pat pausefilter pclmulqdq pdpe1gb perfctr_core perfctr_llc perfctr_nb
   pfthreshold pge pni popcnt pse pse36 rdpid rdpru rdrand rdseed rdt_a
   rdtscp rep_good sep sev sev_es sha_ni skinit smap smca sme smep ssbd sse
   sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor svm svm_lock syscall tce
   topoext tsc tsc_scale umip v_spec_ctrl v_vmsave_vmload vgif vmcb_clean vme
   vmmcall wbnoinvd wdt xgetbv1 xsave xsavec xsaveerptr xsaveopt xsaves
 Vulnerabilities:
 Type: itlb_multihit status: Not affected
 Type: l1tf status: Not affected
 Type: mds status: Not affected
 Type: meltdown status: Not affected
 Type: spec_store_bypass
   mitigation: Speculative Store Bypass disabled via prctl and seccomp
 Type: spectre_v1
   mitigation: usercopy/swapgs barriers and __user pointer sanitization
 Type: spectre_v2 mitigation: Full AMD retpoline, IBPB: conditional, STIBP:
   conditional, RSB filling
 Type: srbds status: Not affected
 Type: tsx_async_abort status: Not affected
Graphics:
 Device-1: AMD Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT]
   vendor: Sapphire Limited driver: amdgpu v: kernel bus-ID: 0a:00.0
   chip-ID: 1002:731f class-ID: 0300
 Display: x11 server: X.Org 1.21.1.2 compositor: xfwm4 v: 4.16.1 driver:
   loaded: amdgpu display-ID: :0.0 screens: 1
 Screen-1: 0 s-res: 2560x1440 s-dpi: 96 s-size: 677x381mm (26.7x15.0")
   s-diag: 777mm (30.6")
 Monitor-1: DisplayPort-0 res: 2560x1440 dpi: 109
   size: 597x336mm (23.5x13.2") diag: 685mm (27")
 OpenGL: renderer: AMD Radeon RX 5700 XT (NAVI10 DRM 3.41.0
   5.13.19-2-MANJARO LLVM 13.0.0)
   v: 4.6 Mesa 21.2.5 direct render: Yes
Audio:
 Device-1: AMD Navi 10 HDMI Audio driver: snd_hda_intel v: kernel
   bus-ID: 0a:00.1 chip-ID: 1002:ab38 class-ID: 0403
 Device-2: AMD Starship/Matisse HD Audio vendor: ASUSTeK
   driver: snd_hda_intel v: kernel bus-ID: 0c:00.4 chip-ID: 1022:1487
   class-ID: 0403
 Sound Server-1: ALSA v: k5.13.19-2-MANJARO running: yes
 Sound Server-2: JACK v: 1.9.19 running: no
 Sound Server-3: PulseAudio v: 15.0 running: yes
 Sound Server-4: PipeWire v: 0.3.40 running: no
Network:
 Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
   vendor: ASUSTeK PRIME B450M-A driver: r8169 v: kernel port: f000
   bus-ID: 04:00.0 chip-ID: 10ec:8168 class-ID: 0200
 IF: enp4s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
 IP v4: <filter> type: dynamic noprefixroute scope: global
   broadcast: <filter>
 IP v6: <filter> type: dynamic noprefixroute scope: global
 IP v6: <filter> type: noprefixroute scope: link
 WAN IP: <filter>
Bluetooth:
 Message: No bluetooth data found.
Logical:
 Message: No logical block device data found.
RAID:
 Message: No RAID data found.
Drives:
 Local Storage: total: 3.18 TiB used: 56.07 GiB (1.7%)
 SMART Message: Required tool smartctl not installed. Check --recommends
 ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 970 EVO 500GB
   size: 465.76 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
   lanes: 4 type: SSD serial: <filter> rev: 2B2QEXE7 temp: 30.9 C scheme: GPT
 ID-2: /dev/sda maj-min: 8:0 vendor: Western Digital
   model: WD20EZRZ-00Z5HB0 size: 1.82 TiB block-size: physical: 4096 B
   logical: 512 B speed: 6.0 Gb/s type: HDD rpm: 5400 serial: <filter>
   rev: 0A80 scheme: GPT
 ID-3: /dev/sdb maj-min: 8:16 vendor: Samsung model: SSD 860 QVO 1TB
   size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
   type: SSD serial: <filter> rev: 2B6Q scheme: GPT
 Message: No optical or floppy data found.
Partition:
 ID-1: / raw-size: 465.47 GiB size: 457.09 GiB (98.20%)
   used: 49.16 GiB (10.8%) fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2
   label: N/A uuid: 0bc33de2-959d-433a-8788-244c33b2697f
 ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
   used: 25.5 MiB (8.5%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
   label: NO_LABEL uuid: 6D5F-3BC0
 ID-3: /mnt/Fast Library raw-size: 915.89 GiB size: 900.51 GiB (98.32%)
   used: 6.88 GiB (0.8%) fs: ext4 dev: /dev/sdb1 maj-min: 8:17
   label: Fast Library uuid: 6a9f3a32-0b2d-47db-a750-49ff7315f9f0
 ID-4: /mnt/Slow Archive raw-size: 1.82 TiB size: 1.79 TiB (98.37%)
   used: 28 KiB (0.0%) fs: ext4 dev: /dev/sda1 maj-min: 8:1 label: Slow Archive
   uuid: f3e28752-bf8b-44b3-9ec9-5befd5a00509
Swap:
 Alert: No swap data was found.
Unmounted:
 ID-1: /dev/sdb2 maj-min: 8:18 size: 15.62 GiB fs: swap label: N/A
   uuid: 9a48c4a1-7a4a-4f3a-82b0-888ec862a47d
USB:
 Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 6 rev: 2.0
   speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
 Hub-2: 2-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
   chip-ID: 1d6b:0003 class-ID: 0900
 Hub-3: 3-0:1 info: Hi-speed hub with single TT ports: 6 rev: 2.0
   speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
 Device-1: 3-3:2 info: tshort Dactyl-Manuform (5x6) type: Keyboard,HID
   driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s
   power: 500mA chip-ID: 444d:3536 class-ID: 0300
 Device-2: 3-4:3 info: Logitech G502 Proteus Spectrum Optical Mouse
   type: Mouse,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
   speed: 12 Mb/s power: 300mA chip-ID: 046d:c332 class-ID: 0300
   serial: <filter>
 Device-3: 3-6:4 info: ASUSTek AURA LED Controller type: HID
   driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 16mA
   chip-ID: 0b05:18f3 class-ID: 0300 serial: <filter>
 Hub-4: 4-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
   chip-ID: 1d6b:0003 class-ID: 0900
 Hub-5: 5-0:1 info: Hi-speed hub with single TT ports: 4 rev: 2.0
   speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
 Device-1: 5-2:2 info: Prusa Original Prusa i3 MK3
   type: Abstract (modem),CDC-Data driver: cdc_acm interfaces: 2 rev: 2.0
   speed: 12 Mb/s power: 100mA chip-ID: 2c99:0002 class-ID: 0a00
   serial: <filter>
 Hub-6: 6-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
   chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
 System Temperatures: cpu: 37.2 C mobo: N/A gpu: amdgpu temp: 42.0 C
   mem: 40.0 C
 Fan Speeds (RPM): N/A gpu: amdgpu fan: 0
Info:
 Processes: 298 Uptime: 27m wakeups: 0 Init: systemd v: 249 tool: systemctl
 Compilers: gcc: 11.1.0 Packages: 1263 pacman: 1254 lib: 394 flatpak: 5
 snap: 4 Shell: Bash v: 5.1.12 running-in: xfce4-terminal inxi: 3.3.11
2

5.13 is EOL. Switch to a supported kernel:

sudo pacman-mirrors --fasttrack 5 && sudo pacman -Syyu 
sudo mhwd-kernel -i linux515

Then reboot into 5.15. Press Esc during boot to get into grub menu > advanced options and boot with 5.15. Double check your running kernel is not 5.13 then remove it:

uname -r #to check kernel version
sudo mhwd-kernel -r linux513
1 Like
3

okay that was one of the old data I am currently running on kernel 5.16 had 5.15 before with same problem thought kernel update might fix it

4

What is the output of systemctl get-default?

Also share the contents of /etc/lightdm/lightdm.conf.

5

systemctl get default returns

graphical.target

Imma just write every line that is not uncommented

[LightDM]
run-directory=/run/lightdm
greeter-session=lightdm-gtk-greeter
[Seat:*]
session-wrapper=/etc/lightdm/Xsession
[XDMCPServer]
[VNCServer]
6

This is meant to be under the [Seat:*] section and not [LightDM] as it is given in the default lightdm configuration file. Maybe that’s why it says [LightDM] contains unknown option greeter-session on line 6th in the picture provided by you. Make this change and reboot.

7

same error in journalctl

here the new output oflightdm --test-mode --debug

greeter (2)
greeter (2)1920×1087 228 KB

8

cat /etc/lightdm/lightdm.conf | grep -v "#"

you did change that to read:

[LightDM]
run-directory=/run/lightdm

[Seat:*]
greeter-session=lightdm-gtk-greeter
session-wrapper=/etc/lightdm/Xsession

[XDMCPServer]

[VNCServer]

?

edit:
grep -v "#" /etc/lightdm/lightdm.conf

would get rid of the unnecessary “cat” and the pipe
in the previously given command
… it just “grep’s” the given file
for lines not starting with: #
/edit

9

Can you try commenting out logind-check-graphical=true under [LightDM] section?

10

yes
thats how it is now

11

I tried didn’t change anything

12

I had some difficulty with editing.

Review again please.

13

yes I figured. One thing my keyboard doesnt have a | key so i just nano’d and checked everything that doesn’t have a # at the start of the line. The grep just makes those lines invisible right?

14

not quite :wink:
The grep (this one …) just lists the lines without a # in front of the line.
It just lists the lines which do not start with: # :wink:

IOW:
it lists the lines which are actually capable of doing anything
which are not commented out …

15

Jeah I that’s what I wanted to say but my brain is not working anymore currently. Had a long day.
Thank you.

But just to be sure the not commented out lines match exactly your thing.
Ive tried adding the

logind-check-graphical=true

though it doesn’t change anything

16

Can you try reverting back these changes?

17

I deleted the 20-amdgpu.conf and the 20-radeon.conf (dont remember the names exactly and now I seem to be able to boot thank you! @ishaanbhimwal

18

now I just have to figure out how to enable those things without killing lightdm in the process

19

systemctl stop lightdm.service

do your thing

systemctl start lightdm.service

afterwards

… or just don’t care
do your edits
and then restart the service

systemctl restart lightdm.service

or reboot

20

Doing it the standard way by creating the config files seemed t work I guess the two seperate config files I had, due to me being stupid, maybe confused the system.