Hello again 
I’m sorry for getting back on this so late, I just didn’t have time to play with this.
I followed both of your advises, this is what I’ve figured out:
@El_Brujo GDM actually does start on its own if I switch to TTY1.
This is the GDM status directly after boot:
systemctl status gdm.service
● gdm.service - GNOME Display Manager
Loaded: loaded (/usr/lib/systemd/system/gdm.service; enabled; vendor preset: disabled)
Active: active (running) since Sat 2021-06-05 11:39:21 CEST; 1min 38s ago
Process: 659 ExecStartPre=/usr/lib/gdm-wait-for-drm (code=exited, status=0/SUCCESS)
Main PID: 663 (gdm)
Tasks: 3 (limit: 9395)
Memory: 5.5M
CGroup: /system.slice/gdm.service
└─663 /usr/bin/gdm
lip 05 11:39:21 paula-pc systemd[1]: Starting GNOME Display Manager...
lip 05 11:39:21 paula-pc systemd[1]: Started GNOME Display Manager.
lip 05 11:39:23 paula-pc gdm[663]: Gdm: Child process -938 was already dead.
And the status from the journalctl:
journalctl --boot --priority=err
-- Journal begins at Mon 2021-04-05 14:04:00 CEST, ends at Sat 2021-06-05 11:55:42 CEST. --
lip 05 11:39:19 paula-pc kernel: platform MSFT0101:00: failed to claim resource 1: [mem 0xfed40000-0xfed40fff]
lip 05 11:39:19 paula-pc kernel: acpi MSFT0101:00: platform device creation failed: -16
lip 05 11:39:19 paula-pc kernel:
lip 05 11:39:21 paula-pc kernel: snd_hda_codec_hdmi hdaudioC0D2: Monitor plugged-in, Failed to power up codec ret=[-13]
lip 05 11:40:40 paula-pc gdm-password][3750]: gkr-pam: unable to locate daemon control file
My system info:
inxi --admin --verbosity=7 --filter --no-host --width
System:
Kernel: 5.10.36-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64
root=UUID=725e3735-3cc9-4a92-a81b-aafd1235dbbb rw quiet splash apparmor=1
security=apparmor resume=UUID=3d0ac009-bc34-4620-b189-355b16b62087
udev.log_priority=3
Desktop: GNOME 3.38.4 tk: GTK 3.24.29 wm: gnome-shell dm: GDM 40.0
Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Laptop System: Acer product: Aspire V5-591G v: V1.04 serial: <filter>
Mobo: Acer model: Usopp_SLS v: V1.04 serial: <filter> UEFI-[Legacy]: Insyde
v: 1.04 date: 10/27/2015
Battery:
ID-1: BAT1 charge: 29.2 Wh (100.0%) condition: 29.2/55.9 Wh (52.3%)
volts: 12.9 min: 11.1 model: SANYO AL15B32 type: Li-ion serial: <filter>
status: Full
ID-2: hidpp_battery_0 charge: N/A condition: N/A volts: 3.8 min: N/A
model: Logitech G502 LIGHTSPEED Wireless Gaming Mouse type: N/A
serial: <filter> status: Discharging
Memory:
RAM: total: 7.67 GiB used: 2.63 GiB (34.4%)
RAM Report: permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: Quad Core model: Intel Core i7-6700HQ bits: 64 type: MT MCP
arch: Skylake-S family: 6 model-id: 5E (94) stepping: 3 microcode: E2 cache:
L2: 6 MiB bogomips: 41621
Speed: 800 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 800 2: 800 3: 800
4: 800 5: 800 6: 800 7: 800 8: 800
Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon art
avx avx2 bmi1 bmi2 bts clflush clflushopt cmov constant_tsc cpuid
cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms est
f16c flexpriority flush_l1d fma fpu fsgsbase fxsr hle ht hwp hwp_act_window
hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid invpcid_single lahf_lm lm
mca mce md_clear mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx pae pat
pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts
rdrand rdseed rdtscp rep_good rtm sdbg sep smap smep ss ssbd sse sse2 sse4_1
sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc tsc_adjust
tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt
xsaves xtopology xtpr
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf
mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
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 generic retpoline, IBPB: conditional,
IBRS_FW, STIBP: conditional, RSB filling
Type: srbds mitigation: Microcode
Type: tsx_async_abort mitigation: Clear CPU buffers; SMT vulnerable
Graphics:
Device-1: Intel HD Graphics 530 vendor: Acer Incorporated ALI driver: i915
v: kernel bus-ID: 00:02.0 chip-ID: 8086:191b class-ID: 0300
Device-2: NVIDIA GM107M [GeForce GTX 950M] vendor: Acer Incorporated ALI
driver: nvidia v: 460.80 alternate: nouveau,nvidia_drm bus-ID: 01:00.0
chip-ID: 10de:139a class-ID: 0302
Device-3: Chicony HD WebCam type: USB driver: uvcvideo bus-ID: 1-9:7
chip-ID: 04f2:b520 class-ID: 0e02
Display: x11 server: X.org 1.20.11 compositor: gnome-shell driver:
loaded: modesetting,nvidia alternate: fbdev,intel,nouveau,nv,vesa
resolution: <missing: xdpyinfo>
OpenGL: renderer: Mesa Intel HD Graphics 530 (SKL GT2) v: 4.6 Mesa 21.0.3
direct render: Yes
Audio:
Device-1: Intel 100 Series/C230 Series Family HD Audio
vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel
bus-ID: 00:1f.3 chip-ID: 8086:a170 class-ID: 0403
Device-2: C-Media Audio Adapter (Unitek Y-247A) type: USB
driver: hid-generic,snd-usb-audio,usbhid bus-ID: 1-5:3 chip-ID: 0d8c:0014
class-ID: 0300
Sound Server-1: ALSA v: k5.10.36-2-MANJARO running: yes
Sound Server-2: JACK v: 0.125.0 running: no
Sound Server-3: PulseAudio v: 14.2 running: yes
Sound Server-4: PipeWire v: 0.3.28 running: yes
Network:
Device-1: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter
vendor: Foxconn driver: ath10k_pci v: kernel port: 4000 bus-ID: 07:00.0
chip-ID: 168c:003e class-ID: 0280
IF: wlp7s0 state: up mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: dynamic noprefixroute scope: global
IP v6: <filter> type: dynamic noprefixroute scope: global
IP v6: <filter> type: noprefixroute scope: link
Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Acer Incorporated ALI driver: r8169 v: kernel port: 3000
bus-ID: 08:00.0 chip-ID: 10ec:8168 class-ID: 0200
IF: enp8s0 state: down mac: <filter>
WAN IP: <filter>
Bluetooth:
Device-1: Foxconn / Hon Hai type: USB driver: btusb v: 0.8 bus-ID: 1-7:5
chip-ID: 0489:e09f class-ID: e001
Report: rfkill ID: hci0 rfk-id: 3 state: up address: see --recommends
Logical:
Message: No logical block device data found.
RAID:
Message: No RAID data found.
Drives:
Local Storage: total: 1.14 TiB used: 132.1 GiB (11.3%)
SMART Message: Required tool smartctl not installed. Check --recommends
ID-1: /dev/sda maj-min: 8:0 vendor: Toshiba model: THNSNJ256G8NU
size: 238.47 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
rotation: SSD serial: <filter> rev: 0101 scheme: MBR
ID-2: /dev/sdb maj-min: 8:16 vendor: Western Digital model: WD10JPVX-22JC3T0
size: 931.51 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
rotation: 5400 rpm serial: <filter> rev: 1A01 scheme: MBR
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 230.47 GiB size: 225.79 GiB (97.97%)
used: 27.98 GiB (12.4%) fs: ext4 dev: /dev/sda2 maj-min: 8:2 label: N/A
uuid: 725e3735-3cc9-4a92-a81b-aafd1235dbbb
ID-2: /home raw-size: 931.51 GiB size: 915.81 GiB (98.31%)
used: 104.11 GiB (11.4%) fs: ext4 dev: /dev/sdb1 maj-min: 8:17 label: N/A
uuid: 0f0dc157-29d0-41d9-9477-2b3938fcbcc0
Swap:
Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
ID-1: swap-1 type: partition size: 8 GiB used: 0 KiB (0.0%) priority: -2
dev: /dev/sda1 maj-min: 8:1 label: N/A
uuid: 3d0ac009-bc34-4620-b189-355b16b62087
Unmounted:
Message: No unmounted partitions found.
USB:
Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 16 rev: 2.0
speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
Hub-2: 1-1:2 info: Genesys Logic Hub ports: 4 rev: 2.1 speed: 480 Mb/s
power: 100mA chip-ID: 05e3:0610 class-ID: 0900
Hub-3: 1-1.1:4 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s
power: 100mA chip-ID: 05e3:0608 class-ID: 0900
Hub-4: 1-1.1.1:6 info: ASIX AX68004 ports: 7 rev: 1.0 speed: 12 Mb/s
power: 100mA chip-ID: 0b95:6804 class-ID: 0900
Device-1: 1-1.1.1.1:8 info: Logitech USB Receiver type: Keyboard,Mouse,HID
driver: logitech-djreceiver,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s
power: 98mA chip-ID: 046d:c539 class-ID: 0300
Device-2: 1-1.1.1.2:10
info: Logitech G915 TKL LIGHTSPEED Wireless RGB Mechanical Gaming Keyboard
type: Keyboard,Mouse,HID driver: hid-generic,usbhid interfaces: 3 rev: 2.0
speed: 12 Mb/s power: 100mA chip-ID: 046d:c343 class-ID: 0300
serial: <filter>
Device-3: 1-5:3 info: C-Media Audio Adapter (Unitek Y-247A) type: Audio,HID
driver: hid-generic,snd-usb-audio,usbhid interfaces: 4 rev: 1.1
speed: 12 Mb/s power: 100mA chip-ID: 0d8c:0014 class-ID: 0300
Device-4: 1-7:5 info: Foxconn / Hon Hai type: Bluetooth driver: btusb
interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 0489:e09f
class-ID: e001
Device-5: 1-9:7 info: Chicony HD WebCam type: Video driver: uvcvideo
interfaces: 2 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 04f2:b520
class-ID: 0e02
Device-6: 1-10:9 info: Realtek RTS5129 Card Reader Controller
type: <vendor specific> driver: rtsx_usb,rtsx_usb_ms,rtsx_usb_sdmmc
interfaces: 1 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 0bda:0129
class-ID: ff00 serial: <filter>
Hub-5: 2-0:1 info: Full speed (or root) Hub ports: 8 rev: 3.0 speed: 5 Gb/s
chip-ID: 1d6b:0003 class-ID: 0900
Hub-6: 2-6:2 info: Genesys Logic hub ports: 4 rev: 3.0 speed: 5 Gb/s
chip-ID: 05e3:0616 class-ID: 0900
Sensors:
System Temperatures: cpu: 52.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info:
Processes: 286 Uptime: 13m wakeups: 8 Init: systemd v: 247 tool: systemctl
Compilers: gcc: 10.2.0 Packages: 1447 pacman: 1433 lib: 428 flatpak: 0
snap: 14 Shell: Zsh v: 5.8 running-in: gnome-terminal inxi: 3.3.04
I will take a look at the other topics meanwhile… hopefully there is a solution without messing with Kernel though 
Thanks a lot!
