On Fri, Jun 19, 2020 at 8:48 AM Michael <confabulate@kintzios.com> wrote:

> It started thus:
>
> Jun 18 17:52:45 asus kernel: ata1.00: exception Emask 0x0 SAct 0x2 SErr
> 0x0
> action 0x6 frozen
> Jun 18 17:52:45 asus kernel: ata1.00: failed command: WRITE FPDMA QUEUED
> Jun 18 17:52:45 asus kernel: ata1.00: cmd
> 61/20:08:60:f1:90/00:00:02:00:00/40
> tag 1 ncq dma 16384 out\x0a         res
> 40/00:01:00:4f:c2/00:00:00:00:00/00
> Emask 0x4 (timeout)
> <snip>
>

What does smartctl -a /dev/sda report?

Tried replacing the cable?