Screen blinking occasionally on Ryzen 4000 laptop

I’m not sure if it’s the right section to post, but still.

I have an issue with the screen since kernel 5.6.x.
Sometimes it blinks, it looks like a rapid switching off and on every 2-4 seconds.

When it happens, I just do something that could turn the screen off (screen locking, switching refresh rate, etc.) But it could take up to 3 iterations, moreover, it’s obviously just a weird workaround.

Also, on 5.8 kernel it could not restore previous backlight brightness state. It is still saved in GNOME, but without touching brightness setting it stays on some default value from UEFI or something in the way. It doesn’t happen on 5.7, though.

And, of course, my inxi -Fxxxz:

System:    Kernel: 5.8.2-1-MANJARO x86_64 bits: 64 compiler: N/A Desktop: GNOME 3.36.5 tk: GTK 3.24.22 wm: gnome-shell 
           dm: GDM 3.36.3 Distro: Manjaro Linux 
Machine:   Type: Laptop System: ASUSTeK product: TUF Gaming FA506IV_FX506IV v: 1.0 serial: <filter> 
           Mobo: ASUSTeK model: FA506IV v: 1.0 serial: <filter> UEFI: American Megatrends v: FA506IV.309 date: 07/02/2020 
Battery:   ID-1: BAT1 charge: 88.5 Wh condition: 88.5/90.2 Wh (98%) volts: 5.4/15.9 model: ASUS A32-K55 type: Li-ion 
           serial: N/A status: Full 
CPU:       Topology: 8-Core model: AMD Ryzen 7 4800H with Radeon Graphics bits: 64 type: MT MCP arch: Zen rev: 1 
           L2 cache: 4096 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 92670 
           Speed: 1431 MHz min/max: 1400/2900 MHz boost: enabled Core speeds (MHz): 1: 2230 2: 1959 3: 1397 4: 1397 5: 1467 
           6: 1397 7: 1427 8: 1395 9: 1604 10: 1607 11: 1710 12: 1658 13: 1595 14: 1734 15: 1398 16: 1397 
Graphics:  Device-1: NVIDIA TU106M [GeForce RTX 2060 Mobile] vendor: ASUSTeK driver: nvidia v: 450.66 bus ID: 01:00.0 
           chip ID: 10de:1f15 
           Device-2: Advanced Micro Devices [AMD/ATI] Renoir vendor: ASUSTeK driver: amdgpu v: kernel bus ID: 05:00.0 
           chip ID: 1002:1636 
           Device-3: IMC Networks USB2.0 HD UVC WebCam type: USB driver: uvcvideo bus ID: 3-4:2 chip ID: 13d3:56a2 
           serial: <filter> 
           Display: x11 server: X.Org 1.20.8 compositor: gnome-shell driver: ati,modesetting,nvidia unloaded: nouveau 
           alternate: amdgpu,fbdev,nv,vesa resolution: 1920x1080~144Hz s-dpi: 96 
           OpenGL: renderer: AMD RENOIR (DRM 3.38.0 5.8.2-1-MANJARO LLVM 10.0.1) v: 4.6 Mesa 20.1.6 direct render: Yes 
Audio:     Device-1: Advanced Micro Devices [AMD/ATI] vendor: ASUSTeK driver: snd_hda_intel v: kernel bus ID: 05:00.1 
           chip ID: 1002:1637 
           Device-2: Advanced Micro Devices [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor driver: snd_rn_pci_acp3x 
           v: kernel bus ID: 05:00.5 chip ID: 1022:15e2 
           Device-3: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel 
           bus ID: 05:00.6 chip ID: 1022:15e3 
           Sound Server: ALSA v: k5.8.2-1-MANJARO 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: ASUSTeK driver: r8169 v: kernel port: e000 
           bus ID: 02:00.0 chip ID: 10ec:8168 
           IF: enp2s0 state: down mac: <filter> 
           Device-2: Realtek RTL8822CE 802.11ac PCIe Wireless Network Adapter vendor: AzureWave driver: rtw_8822ce v: N/A 
           port: d000 bus ID: 03:00.0 chip ID: 10ec:c822 
           IF: wlp3s0 state: up mac: <filter> 
Drives:    Local Storage: total: 1.38 TiB used: 392.04 GiB (27.8%) 
           ID-1: /dev/nvme0n1 vendor: Kingston model: OM8PCP3512F-AB size: 476.94 GiB speed: 31.6 Gb/s lanes: 4 
           serial: <filter> rev: ECFK52.3 scheme: GPT 
           ID-2: /dev/sda type: USB vendor: Toshiba model: MQ04UBF100 size: 931.51 GiB rotation: 5400 rpm serial: <filter> 
           scheme: MBR 
Partition: ID-1: / size: 290.98 GiB used: 133.97 GiB (46.0%) fs: ext4 dev: /dev/nvme0n1p3 
Swap:      ID-1: swap-1 type: partition size: 20.00 GiB used: 0 KiB (0.0%) priority: -2 dev: /dev/nvme0n1p2 
Sensors:   System Temperatures: cpu: 64.1 C mobo: N/A gpu: amdgpu temp: 56 C 
           Fan Speeds (RPM): N/A 
Info:      Processes: 405 Uptime: 4h 24m Memory: 15.13 GiB used: 6.43 GiB (42.5%) Init: systemd v: 246 Compilers: gcc: 10.1.0 
           clang: 10.0.1 Packages: 1487 pacman: 1482 snap: 5 Shell: Zsh v: 5.8 running in: gnome-terminal inxi: 3.1.05

I’d be glad for any tips.

Check the compositor options and change it to opengl3.1
About brightness, I have the same problem since kernel 5.7, I still can change it from keyboard but I made an script to change it to my likes from the start up, tell me if you interest in it and I’ll pass it on to you

Backlight Problem might be this:

Hello, where can I find Mutter options?
And about script – I’d like to see it.

The thing is systemd-backlight service fails to start (as far as I can see it in boot logs.) I’m not sure if this script is applicable for my case.

It should help with this issue you described:

What do you mean? I just don’t get it.

Nevermind, my fault. I did not read properly.