Cinnamon 20.3 (Edge version). Screen freezes, music plays on, mouse's cursor moves - but no interaction.

    'inxi -F && dmesg | grep -i error'
    
    Use of uninitialized value $working in substitution (s///) at /usr/bin/inxi line 18559.
    System:    Host: Linux-2 Kernel: 5.13.0-30-generic x86_64 bits: 64 Desktop: Cinnamon 5.2.7 Distro: Linux Mint 20.3 Una 
    Machine:   Type: Desktop System: Micro-Star product: MS-7D08 v: 2.0 serial: N/A 
               Mobo: Micro-Star model: MAG Z590 TORPEDO (MS-7D08) v: 2.0 serial: 07D0822_L51E017345 UEFI: American Megatrends LLC. 
               v: A.40 date: 01/13/2022 
    CPU:       Topology: 6-Core model: 11th Gen Intel Core i5-11600K bits: 64 type: MT MCP L2 cache: 12.0 MiB 
               Speed: 4600 MHz min/max: 800/4900 MHz Core speeds (MHz): 1: 4604 2: 4725 3: 4669 4: 4600 5: 4814 6: 4600 7: 4676 
               8: 4786 9: 4600 10: 4586 11: 4891 12: 4887 
    Graphics:  Device-1: Intel driver: i915 v: kernel 
               Display: server: X.Org 1.20.13 driver: modesetting unloaded: fbdev,vesa resolution: 3840x2160~60Hz 
               OpenGL: renderer: Mesa Intel Graphics (RKL GT1) v: 4.6 Mesa 21.2.6 
    Audio:     Device-1: Intel driver: snd_hda_intel 
               Sound Server: ALSA v: k5.13.0-30-generic 
    Network:   Device-1: Intel Ethernet I219-V driver: N/A 
               Device-2: Intel driver: igc 
               IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: d8:bb:c1:56:a9:6b 
    Drives:    Local Storage: total: 14.55 TiB used: 3.32 TiB (22.8%) 
               ID-1: /dev/sda vendor: Seagate model: ST8000VN004-2M2101 size: 7.28 TiB 
               ID-2: /dev/sdb vendor: Seagate model: ST8000VN004-2M2101 size: 7.28 TiB 
    Partition: ID-1: / size: 36.42 GiB used: 10.78 GiB (29.6%) fs: ext4 dev: /dev/sda3 
               ID-2: /home size: 36.42 GiB used: 10.84 GiB (29.8%) fs: ext4 dev: /dev/sda4 
               ID-3: swap-1 size: 5.59 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda2 
    Sensors:   System Temperatures: cpu: 27.8 C mobo: N/A 
               Fan Speeds (RPM): N/A 
    Info:      Processes: 342 Uptime: 8m Memory: 31.17 GiB used: 2.28 GiB (7.3%) Shell: bash inxi: 3.0.38 
    [    0.402545] pcieport 0000:00:1c.5: DPC: error containment capabilities: Int Msg #0, RPExt+ PoisonedTLP+ SwTrigger+ RP PIO Log 4, DL_ActiveErr+
    [    0.633881] RAS: Correctable Errors collector initialized.
    [    1.009536] e1000e: probe of 0000:00:1f.6 failed with error -5
    [    6.372303] EXT4-fs (sda3): re-mounted. Opts: errors=remount-ro. Quota mode: none.
    [   10.565345] snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...

Issue
Screen's image freezes, music still plays on and I can move mouse's cursor but can't do anything with it.

Keyboard shorcuts do not work: Audio: volume, mute, new song..., Tty: Alt-Ctrl-F1, ...

Alt-Ctrl-Backspace, to kill Cinnamon, doesn't work either (works when there is no freeze).

Steps to reproduce

Has happened 2 times. First time I had invoked 'firefox'. Second time I was editing an html document with 'libreoffice'.

Expected behaviour

No freezing.

Other information
This is a new system that I have been using for just 3 weeks. The 2 freezes have happened after I updated the kernel (17/02/2022) from 5.13.0-28 to 5.13.0-30.

The only way to exit from the freeze was to 'Alt-PrtScr s' + 'Alt-PrtScr o'. Note: 'Alt-PrtScr o' caused, in booth freezes, a Reboot instead of a Power Off.

The included files are attached after freeze 2. Date time (today 25 Feb 2022) was frozen at 'Friday February, 11:03'.

.xsession-errors.old.log
kern.log
syslog.log
Xorg.0.log.old.log

Start by reviewing the attached kern.log, syslog.log, Xorg.0.log.old.log, and .xsession-errors.old.log, comparing the freezes with the reported kernel versions 5.13.0-28 and 5.13.0-30. Investigate whether the logs identify a Cinnamon, graphics, kernel, or hardware cause; done means isolating a reproducible cause and verifying that the freeze no longer occurs.