On Tue, Aug 11, 2020 at 08:34:53PM +0200, Patrik Nilsson wrote: > Hi Greg, > > Can you provide kernel logs? Odds are the disk disconnects itself as it > > takes too much power or something. > udev-kernel logs can be found: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886172 The bug report doesn't seem to contain any dmesg kernel logs showing what happens when the problem occurs. Also, the bug report indicates that you started to do a bisection looking for the kernel version where the problem first appears, but there's no mention of the final result. The bug report also indicates that one of your tests involves copying /dev/zero to a mounted disk device! That is highly likely to crash the kernel regardless of what the hardware does. What happens if you unmount the disk before running the test? Alan Stern
