Regarding the dmesg output.

On Tuesday, 3 September 2024 19:49:12 AEST Andrew Greig wrote:
> [    2.671616] UBSAN: shift-out-of-bounds in
> /build/linux-3d8Wab/linux-5.15.0/drivers/scsi/aic7xxx/aic7xxx_core.c:5281:31
> [    2.671623] shift exponent -1 is negative

Are you using SCSI disks on an Adaptec controller?  If so this could be 
related to the problem.

https://wiki.ubuntu.com/Kernel/Bugs

In any case this is something to report as a bug to Ubuntu.

[   11.871269] BTRFS info (device sda3): bdev /dev/sda3 errs: wr 0, rd 
0, flush 0, corrupt 3, gen 0
[   78.057485] BTRFS warning (device sda3): checksum verify failed on 
231866368 wanted 0x34378b97 found 0x9bed8a68 level 0
[   79.482363] BTRFS warning (device sda3): checksum verify failed on 
231866368 wanted 0x34378b97 found 0x9bed8a68 level 0

This is the cause of your problem.  Your sda device has corruption and BTRFS 
recognises it and gives an IO error as opposed to Ext4 and other lesser 
filesystems that will just return bad data.

# btrfs fi df /
Data, RAID1: total=718.22GiB, used=668.40GiB
System, RAID1: total=32.00MiB, used=160.00KiB
Metadata, RAID1: total=8.00GiB, used=4.74GiB
GlobalReserve, single: total=512.00MiB, used=0.00B

Above is an example of a system running BTRFS RAID-1, what does it give on 
your system?

# btrfs dev sta /
[/dev/mapper/root0].write_io_errs    0
[/dev/mapper/root0].read_io_errs     0
[/dev/mapper/root0].flush_io_errs    0
[/dev/mapper/root0].corruption_errs  0
[/dev/mapper/root0].generation_errs  0
[/dev/mapper/root1].write_io_errs    0
[/dev/mapper/root1].read_io_errs     0
[/dev/mapper/root1].flush_io_errs    0
[/dev/mapper/root1].corruption_errs  0
[/dev/mapper/root1].generation_errs  0

Above is an example of the command to get the statistics of devices in a BTRFS 
filesystem, you hope for all zeros as in the above example but from the dmesg 
output it looks like sda3 will have a corruption count of at least 5.

After we solve the BTRFS issues (get it into a good RAID-1 state) the next 
issue is fixing the dpkg setup.

Run "sudo rm -f /var/lib/dpkg/info/mutter-common.list" then run
"sudo apt --reinstall install mutter-common" and then after that your system 
should be in a reasonable state.

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