debiman wrote:maybe it has something to do with the ntfs usb drive?
is it connected through an external usb hub?
have you tried without the hub, or maybe even remove the usb drive from its enclosure & use it as an internal drive (this probably won't work with a laptop)?
I tried plugging it in all the USB ports of the motherboard, even the front ones, but it doesn't change anything.
It's a portable drive, so I can't remove the enclosure.
I tried again reverting the kernel to the previous ones, 4.9.110-3+deb9u6 and 4.9.110-3+deb9u2, and it still doesn't crash.
debiman wrote:whatdoes udisksctl power-off do?
what if you don't power the drive down?
'udisksctl power-off' turns off the USB drive light and makes it stop spinning, but this happens even if I use any kind of eject/safe remove from the file manager, or gnome-disk-utility as well. If I just unmount it without powering it off, there's no crash.
debiman wrote:also, isn't the point of udisks that you don't need superuser privileges to mount/unmount drives?
Actually, I needed sudo only on the TTY (I don't know why, I logged in with the same user). If I use the command while being logged in on Mate, there's no need for it, but the system crashes anyway.
I guess I should just revert to the old kernel and re-check this when a new one comes out.