Comment 2 for bug 625380

It's self-assembled computer.
Asus *P5K SE* SOCKET 775 ATX FSB1333 P35 (ICH9).

The card reader is an internal USB: this exact model
http://www.usbwholesale.com/16%20in1%20card%20reader%20internal.htm

> is the system un-mounting the entire card reader device?
Looks like. What's worse is that it can't mount it again even after shutdown.
You have to manually cut off the energy for few seconds!!
(this may be ACPI-related or USB +5V standby)

> ps. i think unmount just unmounts while safely remove drive waits for any read/write operations to complete before unmount
Well umount is already "safe" and it contains "sync; sync" inside itself already ...