Screen display glitches

Since the last xorg/wayland update (or very recently):

[2021-04-19T17:19:10-0400] [ALPM] upgraded xorg-xwayland (21.1.0-1 -> 21.1.1-1)

I’m getting memory corruptions in the display/picture.

Not big blocks, but many short horizontal lines, flicker all over the display, every few seconds.

Laptop, Lenovo 14. XFCE desktop.

A dragged window is really bad, almost 50% corruption.

My first thought - how can I downgrade to a previous version?

ie. what total list of packages should I downgrade?

Second - here is my info, if anyone wants to know and ask questions:

# inxi -Fazy
  Kernel: 5.10.34-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64 
  root=UUID=f1ce2124-63bd-49bc-ac87-5b1e887649c9 rw udev.log_priority=3 
  Console: tty pts/0 DM: LightDM 1.30.0 Distro: Manjaro Linux base: Arch Linux 
  Type: Laptop System: LENOVO product: 20SL v: Lenovo ThinkBook 14-IIL 
  serial: <filter> Chassis: type: 10 v: Lenovo ThinkBook 14-IIL 
  serial: <filter> 
  Mobo: LENOVO model: LVAC/LVAD v: SDK0J40697 WIN serial: <filter> 
  UEFI: LENOVO v: DJCN17WW date: 04/15/2020 
  ID-1: BAT1 charge: 42.0 Wh (95.7%) condition: 43.9/45.0 Wh (97.5%) 
  volts: 12.7 min: 11.4 model: SMP L19M3PF1 type: Li-poly serial: <filter> 
  status: Unknown cycles: 53 
  Info: Quad Core model: Intel Core i7-1065G7 socket: U3E1 bits: 64 
  type: MT MCP arch: Ice Lake family: 6 model-id: 7E (126) stepping: 5 
  microcode: A0 cache: L2: 8 MiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 23961 
  Speed: 865 MHz min/max: 400/3900 MHz base/boost: 1300/1500 volts: 0.7 V 
  ext-clock: 100 MHz Core speeds (MHz): 1: 865 2: 1265 3: 1262 4: 1257 5: 1188 
  6: 1265 7: 1264 8: 1255 
  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 
  Device-1: Intel Iris Plus Graphics G7 vendor: Lenovo driver: i915 v: kernel 
  bus-ID: 00:02.0 chip-ID: 8086:8a52 class-ID: 0300 
  Device-2: Acer Integrated Camera type: USB driver: uvcvideo bus-ID: 3-6:5 
  chip-ID: 5986:2130 class-ID: 0e02 
  Display: server: 1.20.11 compositor: compiz v: driver: 
  loaded: intel unloaded: modesetting alternate: fbdev,vesa tty: 80x24 
  Message: Advanced graphics data unavailable in console for root. 
  Device-1: Intel Smart Sound Audio vendor: Lenovo driver: snd_hda_intel 
  v: kernel alternate: snd_sof_pci bus-ID: 00:1f.3 chip-ID: 8086:34c8 
  class-ID: 0403 
  Sound Server-1: ALSA v: k5.10.34-1-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 
  Device-1: Intel Killer Wi-Fi 6 AX1650i 160MHz Wireless Network Adapter 
  driver: iwlwifi v: kernel port: 3000 bus-ID: 00:14.3 chip-ID: 8086:34f0 
  class-ID: 0280 
  IF: wifi0 state: up mac: <filter> 
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Lenovo driver: r8169 v: kernel port: 2000 bus-ID: 01:00.0 
  chip-ID: 10ec:8168 class-ID: 0200 
  IF: net0 state: down mac: <filter> 
  Device-1: Intel Bluetooth 9460/9560 Jefferson Peak (JfP) type: USB 
  driver: btusb v: 0.8 bus-ID: 3-10:7 chip-ID: 8087:0aaa class-ID: e001 
  Report: rfkill ID: hci0 rfk-id: 3 state: down bt-service: enabled,running 
  rfk-block: hardware: no software: yes address: see --recommends 
  Local Storage: total: 953.87 GiB used: 296.03 GiB (31.0%) 
  SMART Message: Required tool smartctl not installed. Check --recommends 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung model: SSD 970 PRO 1TB 
  size: 953.87 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s 
  lanes: 4 rotation: SSD serial: <filter> rev: 1B2QEXP7 temp: 33.9 C 
  scheme: GPT 
  ID-1: / raw-size: 50 GiB size: 48.97 GiB (97.93%) used: 36.86 GiB (75.3%) 
  fs: ext4 block-size: 4096 B dev: /dev/nvme0n1p2 maj-min: 259:2 
  ID-2: /boot/efi raw-size: 512 MiB size: 511 MiB (99.80%) 
  used: 280 KiB (0.1%) fs: vfat block-size: 512 B dev: /dev/nvme0n1p1 
  maj-min: 259:1 
  Alert: No swap data was found. 
  System Temperatures: cpu: 40.0 C mobo: N/A 
  Fan Speeds (RPM): N/A 
  Processes: 230 Uptime: 3h 59m wakeups: 1 Memory: 15.16 GiB 
  used: 3.24 GiB (21.4%) Init: systemd v: 247 tool: systemctl Compilers: 
  gcc: 10.2.0 Packages: pacman: 1453 lib: 431 flatpak: 0 Shell: Bash (su) 
  v: 5.1.4 running-in: tty pts/0 inxi: 3.3.04 


I should have said - this is on the external display, HDMI, 4K, 60Hz.

And seams to go through phases, where it happens, and then it’s OK.