Hi all !
So here’s my issue. I use a KVM switch to switch my monitors from my macbook to my desktop.
When I switch back from my macbook I get a black screen and need to hard reset the desktop. I tried a lot of different OS recently and none had this issue. I also used manjaro before without this issue.
I have no clue where to look 
inxi
System:
Kernel: 5.15.25-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.2.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.15-x86_64
root=UUID=b9d01d7a-cd5a-4e65-96aa-cd4cc49dbaa2 rw quiet splash apparmor=1
security=apparmor udev.log_priority=3
Desktop: GNOME 41.4 tk: GTK 3.24.31 wm: gnome-shell dm: GDM 41.3
Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Desktop System: ASUS product: N/A v: N/A serial: <superuser required>
Mobo: ASUSTeK model: TUF GAMING B550-PLUS v: Rev X.0x
serial: <superuser required> UEFI: American Megatrends v: 1216
date: 11/24/2020
Battery:
Message: No system battery data found. Is one present?
Memory:
RAM: total: 15.6 GiB used: 2.25 GiB (14.4%)
RAM Report:
permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: model: AMD Ryzen 5 3600XT 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: 4003 high: 4022 min/max: 2200/4879 boost: enabled
scaling: driver: acpi-cpufreq governor: schedutil cores: 1: 4001 2: 4017
3: 4022 4: 3995 5: 4003 6: 3975 7: 3996 8: 3994 9: 4000 10: 4010 11: 4021
12: 4009 bogomips: 96045
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 rapl 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: XFX Pine driver: amdgpu v: kernel pcie: gen: 4 speed: 16 GT/s
lanes: 16 ports: active: DP-1,DP-2 empty: DP-3,HDMI-A-1 bus-ID: 0c:00.0
chip-ID: 1002:731f class-ID: 0300
Device-2: Logitech C922 Pro Stream Webcam type: USB
driver: snd-usb-audio,uvcvideo bus-ID: 3-1.2.1:4 chip-ID: 046d:085c
class-ID: 0102 serial: <filter>
Display: wayland server: X.org v: 1.21.1.3 with: Xwayland v: 22.1.0
compositor: gnome-shell driver: X: loaded: amdgpu,ati
unloaded: modesetting,radeon alternate: fbdev,vesa gpu: amdgpu
display-ID: 0
Monitor-1: DP-1 model: ASUS VP28U serial: <filter> built: 2018
res: 3840x2160 dpi: 157 gamma: 1.2 size: 621x341mm (24.4x13.4")
diag: 708mm (27.9") ratio: 16:9 modes: max: 3840x2160 min: 640x350
Monitor-2: DP-2 model: Lenovo LEN P27h-10 serial: <filter> built: 2020
res: 2560x1440 dpi: 109 gamma: 1.2 size: 597x336mm (23.5x13.2")
diag: 685mm (27") ratio: 16:9 modes: max: 2560x1440 min: 720x400
OpenGL: renderer: AMD Radeon RX 5600 XT (NAVI10 DRM 3.42.0
5.15.25-1-MANJARO LLVM 13.0.1)
v: 4.6 Mesa 21.3.7 direct render: Yes
Audio:
Device-1: AMD Navi 10 HDMI Audio driver: snd_hda_intel v: kernel pcie:
gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 0c:00.1 chip-ID: 1002:ab38
class-ID: 0403
Device-2: AMD Starship/Matisse HD Audio vendor: ASUSTeK
driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16
bus-ID: 0e:00.4 chip-ID: 1022:1487 class-ID: 0403
Device-3: Logitech C922 Pro Stream Webcam type: USB
driver: snd-usb-audio,uvcvideo bus-ID: 3-1.2.1:4 chip-ID: 046d:085c
class-ID: 0102 serial: <filter>
Sound Server-1: ALSA v: k5.15.25-1-MANJARO running: yes
Sound Server-2: JACK v: 1.9.20 running: no
Sound Server-3: PulseAudio v: 15.0 running: yes
Sound Server-4: PipeWire v: 0.3.47 running: yes
Network:
Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel pcie: gen: 2
speed: 5 GT/s lanes: 1 bus-ID: 06:00.0 chip-ID: 8086:2723 class-ID: 0280
IF: wlp6s0 state: up mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
Device-2: Realtek RTL8125 2.5GbE vendor: ASUSTeK driver: r8169 v: kernel
pcie: gen: 2 speed: 5 GT/s lanes: 1 port: f000 bus-ID: 09:00.0
chip-ID: 10ec:8125 class-ID: 0200
IF: enp9s0 state: down mac: <filter>
WAN IP: <filter>
Bluetooth:
Device-1: Intel AX200 Bluetooth type: USB driver: btusb v: 0.8
bus-ID: 1-7.4:4 chip-ID: 8087:0029 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: 1.14 TiB used: 573.1 GiB (49.0%)
SMART Message: Required tool smartctl not installed. Check --recommends
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Crucial model: CT1000P5SSD8
size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
lanes: 4 type: SSD serial: <filter> rev: P4CR311 temp: 40.9 C scheme: GPT
ID-2: /dev/sda maj-min: 8:0 vendor: SanDisk model: X400 M.2 2280 256GB
size: 238.47 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
type: SSD serial: <filter> rev: 0012 scheme: GPT
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 107.42 GiB size: 105.18 GiB (97.91%)
used: 16.14 GiB (15.3%) fs: ext4 dev: /dev/sda6 maj-min: 8:6 label: N/A
uuid: b9d01d7a-cd5a-4e65-96aa-cd4cc49dbaa2
ID-2: /boot/efi raw-size: 100 MiB size: 96 MiB (96.00%)
used: 34.1 MiB (35.6%) fs: vfat dev: /dev/sda2 maj-min: 8:2 label: N/A
uuid: 40B9-CF03
ID-3: /mnt/data raw-size: 931.5 GiB size: 931.5 GiB (100.00%)
used: 556.93 GiB (59.8%) fs: ntfs dev: /dev/nvme0n1p2 maj-min: 259:2
label: Data uuid: AE58ABEE58ABB40D
Swap:
Alert: No swap data was found.
Unmounted:
ID-1: /dev/nvme0n1p1 maj-min: 259:1 size: 16 MiB fs: <superuser required>
label: N/A uuid: N/A
ID-2: /dev/sda1 maj-min: 8:1 size: 529 MiB fs: ntfs label: Recovery
uuid: D04AB7EC4AB7CD8A
ID-3: /dev/sda3 maj-min: 8:3 size: 16 MiB fs: <superuser required>
label: N/A uuid: N/A
ID-4: /dev/sda4 maj-min: 8:4 size: 129.91 GiB fs: ntfs label: Windows
uuid: 9668BFB368BF908B
ID-5: /dev/sda5 maj-min: 8:5 size: 523 MiB fs: ntfs label: N/A
uuid: FE0ACE610ACE1715
USB:
Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 10 rev: 2.0
speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
Device-1: 1-6:2 info: ASUSTek AURA LED Controller type: HID
driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 16mA
chip-ID: 0b05:1939 class-ID: 0300 serial: <filter>
Hub-2: 1-7:3 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s
power: 100mA chip-ID: 05e3:0610 class-ID: 0900
Device-1: 1-7.4:4 info: Intel AX200 Bluetooth type: Bluetooth
driver: btusb interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA
chip-ID: 8087:0029 class-ID: e001
Hub-3: 2-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
chip-ID: 1d6b:0003 class-ID: 0900
Hub-4: 3-0:1 info: Hi-speed hub with single TT ports: 4 rev: 2.0
speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
Hub-5: 3-1:2 info: Terminus Hub ports: 4 rev: 2.0 speed: 480 Mb/s
power: 100mA chip-ID: 1a40:0101 class-ID: 0900
Hub-6: 3-1.2:3 info: Terminus Hub ports: 4 rev: 2.0 speed: 480 Mb/s
power: 100mA chip-ID: 1a40:0101 class-ID: 0900
Device-1: 3-1.2.1:4 info: Logitech C922 Pro Stream Webcam
type: Video,Audio driver: snd-usb-audio,uvcvideo interfaces: 4 rev: 2.0
speed: 480 Mb/s power: 500mA chip-ID: 046d:085c class-ID: 0102
serial: <filter>
Device-2: 3-1.2.2:5 info: Elan Micro Gaming KB type: Keyboard
driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s
power: 100mA chip-ID: 04f3:152e class-ID: 0301
Device-3: 3-1.2.3:6 info: Logitech G502 SE HERO Gaming Mouse
type: Mouse,HID driver: hid-generic,usbhid interfaces: 2 rev: 2.0
speed: 12 Mb/s power: 300mA chip-ID: 046d:c08b class-ID: 0300
serial: <filter>
Hub-7: 4-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
System Temperatures: cpu: N/A mobo: N/A gpu: amdgpu temp: 58.0 C mem: 56.0 C
Fan Speeds (RPM): N/A gpu: amdgpu fan: 0
Info:
Processes: 384 Uptime: 4m wakeups: 0 Init: systemd v: 250 tool: systemctl
Compilers: gcc: 11.2.0 clang: 13.0.1 Packages: 1158 pacman: 1153 lib: 311
flatpak: 5 Shell: Zsh v: 5.8.1 running-in: gnome-terminal inxi: 3.3.13
xrandr
Screen 0: minimum 16 x 16, current 5120 x 1440, maximum 32767 x 32767
XWAYLAND0 connected primary 2560x1440+2560+0 (normal left inverted right x axis y axis) 620mm x 340mm
2560x1440 59.91*+
1920x1440 59.90
1600x1200 59.87
1440x1080 59.87
1400x1050 59.86
1280x1024 59.89
1280x960 59.94
1152x864 59.78
1024x768 59.68
800x600 59.86
640x480 59.38
320x240 59.52
1920x1200 59.88
1680x1050 59.95
1440x900 59.89
1280x800 59.81
720x480 59.71
640x400 59.20
320x200 58.96
2048x1152 59.90
1920x1080 59.88
1600x900 59.95
1368x768 59.88
1280x720 59.86
1024x576 59.90
864x486 59.92
720x400 59.55
640x350 59.77
XWAYLAND1 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 600mm x 340mm
2560x1440 59.91*+
1920x1440 59.90
1600x1200 59.87
1440x1080 59.87
1400x1050 59.86
1280x1024 59.76
1280x960 59.94
1152x864 59.78
1024x768 59.68
800x600 59.86
640x480 59.38
320x240 59.52
1920x1200 59.88
1680x1050 59.85
1440x900 59.89
1280x800 59.81
720x480 59.71
640x400 59.20
320x200 58.96
2048x1152 59.90
1920x1080 59.88
1600x900 59.82
1368x768 59.88
1280x720 59.86
1024x576 59.90
864x486 59.45
720x400 59.55
640x350 59.77