mar...@duskware.de (Martin Husemann) writes: >This all makes sense to me, but from a users perspective I would expect >it to all work automatically if I plug the USB connector in.
There are only some USB drives that actually attach in a stopped state, and it depends on the user if he wants to spin up the drive automatically. Another class of devices are card readers that appear "offline" when no card is inserted. Most drives for 'removable media' probably behave that way. My only non-removable-media USB device that may start offline is a M.2 enclosure, and only when USB power is not sufficient. I, as a user, would expect that drives are started once I use them and not necessarily when I connect them. Our wedge discovery logic makes this difficult. >Just force PQUIRK_START for all usb attached sd* ? In former times, drives had a jumper to tell if they should start (immediately, or even with a delay). Would be better than any forced quirk. The requirement to start the drive is also independent from using USB. You can have a RAID controller that starts with volumes (and the underlying disks) offline. So if the solution is to force all drives to start, then you need to do that. Maybe not with that quirk as the early start command isn't necessarily correct (and no idea if an iPod requires it at that time). The alternative is to redesign how (and mostly when) wedge discovery works.
