Hi ,
I just want to share that because maybe another guy is on the same issue .
Sysinfo :
bios 1.0 at Q1900DC-ITX , config OMV3 and 4 GB of ram.
Storage : 4 HD 4 TB raid 5 and raid 1 with 2 old HD of some gb
Im not sure what happened, but I think it was related to automatic updates on OMV3 and some firmware mess with my old bios (in fact the one from factor) .
Just a shor briefing :
When I was playing some videos with my libreelec raspi3 config it began to drop sound an get freezes, it went worse and when I issued some command with I/O that got stuck, for example a 2000 lines of /var/log/messages got stucked after showing a few lines when I did :
cat /var/log/messages
But not when I did :
cat /var/log/messages | grep -i something
It also got stucked with a ls and things like that.
Nothing relevant at messages, syslog, kern.log, dmesg, nothing with raids and everything fine.
Finally I found an old post from a guy (2015 or 2016) saying he had freezes with the asrock Q1900DC-ITX at linux and he solved via bios update.
Not sure what happened, now it seems to work flawlessly again after updating to 1.60 BIOS