I have the same error within amdgpu.
After closing and reopeing the notebook top, the display is totally distorted.
The whole screen is covered with white snowflakes

And then i have to change kernel to 5.4.0-91-generic

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System:    Kernel: 5.4.0-91-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 5.0.7 
           wm: muffin dm: LightDM Distro: Linux Mint 20.2 Uma base: Ubuntu 20.04 focal 
Machine:   Type: Laptop System: MECHREVO product: S2 Air Series PF4NU1F v: Standard 
           serial: <filter> 
           Mobo: MECHREVO model: PF4NU1F v: Standard serial: <filter> BIOS: American Megatrends 
           v: N.1.06MRO03 date: 08/04/2020 
Battery:   ID-1: BAT0 charge: 43.3 Wh condition: 43.3/46.7 Wh (93%) volts: 12.8/11.4 
           model: standard serial: <filter> 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: 92626 
           Speed: 2267 MHz min/max: 1400/2900 MHz Core speeds (MHz): 1: 2362 2: 2429 3: 2271 
           4: 2162 5: 4139 6: 4100 7: 3027 8: 2809 9: 2734 10: 2755 11: 2483 12: 2478 13: 3089 
           14: 3086 15: 3834 16: 3775 
Graphics:  Device-1: AMD Renoir vendor: Tongfang Hongkong Limited driver: N/A bus ID: 04:00.0 
           chip ID: 1002:1636 
           Display: x11 server: X.Org 1.20.13 driver: ati,fbdev unloaded: modesetting,radeon,vesa 
           resolution: 1920x1080~77Hz 
           OpenGL: renderer: llvmpipe (LLVM 12.0.0 256 bits) v: 4.5 Mesa 21.0.3 compat-v: 3.1 
           direct render: Yes 
Audio:     Device-1: AMD vendor: Tongfang Hongkong Limited driver: snd_hda_intel v: kernel 
           bus ID: 04:00.1 chip ID: 1002:1637 
           Device-2: AMD Raven/Raven2/FireFlight/Renoir Audio Processor 
           vendor: Tongfang Hongkong Limited driver: N/A bus ID: 04:00.5 chip ID: 1022:15e2 
           Device-3: AMD Family 17h HD Audio vendor: Tongfang Hongkong Limited 
           driver: snd_hda_intel v: kernel bus ID: 04:00.6 chip ID: 1022:15e3 
           Sound Server: ALSA v: k5.4.0-91-generic 
Network:   Device-1: Intel Dual Band Wireless-AC 3168NGW [Stone Peak] driver: iwlwifi v: kernel 
           bus ID: 01:00.0 chip ID: 8086:24fb 
           IF: wlp1s0 state: down mac: <filter> 
           Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
           vendor: Tongfang Hongkong Limited driver: r8169 v: kernel port: f000 bus ID: 02:00.0 
           chip ID: 10ec:8168 
           IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 476.94 GiB used: 23.53 GiB (4.9%) 
           ID-1: /dev/nvme0n1 vendor: A-Data model: IM2P33F8-512GD size: 476.94 GiB 
           speed: 31.6 Gb/s lanes: 4 serial: <filter> 
Partition: ID-1: / size: 183.08 GiB used: 11.35 GiB (6.2%) fs: ext4 dev: /dev/nvme0n1p1 
           ID-2: /home size: 280.61 GiB used: 12.19 GiB (4.3%) fs: ext4 dev: /dev/nvme0n1p2 
           ID-3: swap-1 size: 3.81 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/nvme0n1p3 
Sensors:   System Temperatures: cpu: 65.9 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http: //mirrors.ustc.edu.cn/linuxmint uma main upstream import backport
           2: deb http: //mirrors.huaweicloud.com/repository/ubuntu focal main restricted universe multiverse
           3: deb http: //mirrors.huaweicloud.com/repository/ubuntu focal-updates main restricted universe multiverse
           4: deb http: //mirrors.huaweicloud.com/repository/ubuntu focal-backports main restricted universe multiverse
           5: deb http: //security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
           6: deb http: //archive.canonical.com/ubuntu/ focal partner
Info:      Processes: 327 Uptime: 1h 03m Memory: 15.12 GiB used: 3.09 GiB (20.4%) Init: systemd 
           v: 245 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Client: Unknown python3.8 client 
           inxi: 3.0.38