Hi everyone!
Having used other Linux distros for years, I’ve recently distro-hopped to Manjaro (Gnome) for the first time and I’m really happy with it!
There is just one problem:
I can enter standby/suspend but my PC just won’t come back to life again. The lights will turn back on, the keyboard and mouse will light up, but the screen doesn’t get a signal. I then need to reset the PC and reboot. Ofc my current state will be gone. 
The system log ends like this:
Mai 12 10:10:19 my-pc systemd[1]: Removed slice User Slice of UID 120.
Mai 12 10:10:19 my-pc systemd[1]: Reached target Sleep.
Mai 12 10:10:19 my-pc systemd[1]: Starting Suspend…
I’ve tried doing the same with the live system I used for installing the OS and it works just fine.
What can I do to fix this?
I’m sure you’ll need some additional information in order to help, so please don’t hesitate to ask! 
Here’s my inxi sysinfo:
inxi --admin --verbosity=7 --filter --no-host --width ✔
System:
Kernel: 5.12.1-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.12-x86_64
root=UUID=11362820-6d94-48b4-af7d-4078266247d5 rw quiet splash apparmor=1
security=apparmor resume=UUID=806fd4a0-bcdc-4007-90a3-db91ed22304b
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: Mini-pc System: HP product: HP ProDesk 400 G6 Desktop Mini PC v: N/A
serial: <filter> Chassis: type: 35 serial: <filter>
Mobo: HP model: 871A v: KBC Version 09.94.00 serial: <filter> UEFI: HP
v: S23 Ver. 02.04.01 date: 11/05/2020
Memory:
RAM: total: 7.55 GiB used: 2.73 GiB (36.2%)
RAM Report: permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: 6-Core model: Intel Core i5-10500T bits: 64 type: MT MCP
arch: Comet Lake family: 6 model-id: A5 (165) stepping: 3 microcode: E0
cache: L2: 12 MiB bogomips: 55219
Speed: 900 MHz min/max: 800/3800 MHz Core speeds (MHz): 1: 900 2: 900 3: 900
4: 900 5: 900 6: 900 7: 900 8: 900 9: 900 10: 900 11: 900 12: 900
Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_capabilities
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 ht hwp hwp_act_window
hwp_epp hwp_notify ibpb ibrs ibrs_enhanced 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 pts rdrand rdseed rdtscp rep_good sdbg sep smap smep smx 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 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: Enhanced IBRS, IBPB: conditional, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Intel UHD Graphics 630 vendor: Hewlett-Packard driver: i915
v: kernel bus-ID: 00:02.0 chip-ID: 8086:9bc8 class-ID: 0300
Display: wayland server: X.org 1.20.11 compositor: gnome-shell driver:
loaded: intel unloaded: modesetting alternate: fbdev,vesa display-ID: 0
resolution: <missing: xdpyinfo>
OpenGL: renderer: Mesa Intel UHD Graphics 630 (CML GT2) v: 4.6 Mesa 21.0.3
direct render: Yes
Audio:
Device-1: Intel Comet Lake PCH cAVS vendor: Hewlett-Packard
driver: snd_hda_intel v: kernel alternate: snd_soc_skl,snd_sof_pci_intel_cnl
bus-ID: 00:1f.3 chip-ID: 8086:06c8 class-ID: 0403
Sound Server-1: ALSA v: k5.12.1-2-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: 0.3.26 running: no
Network:
Device-1: Intel Comet Lake PCH CNVi WiFi driver: iwlwifi v: kernel
port: 3000 bus-ID: 00:14.3 chip-ID: 8086:06f0 class-ID: 0280
IF: wlp0s20f3 state: down mac: <filter>
Device-2: Intel Ethernet I219-LM vendor: Hewlett-Packard driver: e1000e
v: kernel port: efa0 bus-ID: 00:1f.6 chip-ID: 8086:0d4c class-ID: 0200
IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter>
IP v4: <filter> type: noprefixroute scope: global broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
WAN IP: <filter>
Bluetooth:
Device-1: Intel type: USB driver: btusb v: 0.8 bus-ID: 1-14:4
chip-ID: 8087:0026 class-ID: e001
Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends
Logical:
Message: No logical block device data found.
RAID:
Message: No RAID data found.
Drives:
Local Storage: total: 238.47 GiB used: 126.15 GiB (52.9%)
SMART Message: Required tool smartctl not installed. Check --recommends
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Toshiba model: KBG40ZNV256G KIOXIA
size: 238.47 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
lanes: 4 rotation: SSD serial: <filter> rev: HP00AE00 scheme: GPT
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 229.37 GiB size: 224.71 GiB (97.97%)
used: 126.15 GiB (56.1%) fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2
label: N/A uuid: 11362820-6d94-48b4-af7d-4078266247d5
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 296 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
label: NO_LABEL uuid: 3DAB-99CB
Swap:
Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
ID-1: swap-1 type: partition size: 8.8 GiB used: 0 KiB (0.0%) priority: -2
dev: /dev/nvme0n1p3 maj-min: 259:3 label: N/A
uuid: 806fd4a0-bcdc-4007-90a3-db91ed22304b
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
Device-1: 1-2:2 info: [Maxxter] Optical gaming mouse type: Mouse,Keyboard
driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s
power: 100mA chip-ID: 18f8:0f99 class-ID: 0301
Device-2: 1-3:3 info: Jing-Mold Enterprise USB Keyboard type: Keyboard,Mouse
driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s
power: 100mA chip-ID: 05af:0003 class-ID: 0301
Device-3: 1-14:4 info: Intel type: Bluetooth driver: btusb interfaces: 2
rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 8087:0026 class-ID: e001
Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 10 rev: 3.1
speed: 10 Gb/s chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
System Temperatures: cpu: 29.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info:
Processes: 292 Uptime: 22m wakeups: 1 Init: systemd v: 247 tool: systemctl
Compilers: gcc: 10.2.0 Packages: 1265 pacman: 1251 lib: 340 flatpak: 14
Shell: Zsh v: 5.8 running-in: gnome-terminal inxi: 3.3.04
Any help is appreciated! Thanks in advance!