I have looked into this issue. This page has some of the info that you are seeking .. http://www2.one-eyed-alien.net/~mdharm/linux-usb/ as well as . http://www.linux-usb.org/ Im sorry I dont know enough about it myself to give you adiquite help other than resourcing those 2 pages. Im sorry, I hope they help you
Emerson On Wed, 2003-02-05 at 18:41, [EMAIL PROTECTED] wrote: > Longtime gentoo user, confused about what I'm seeing with usb-storage. > > What works: > I currently have a usb camera card reader that accepts cf/sm. I have a handful of cf >cards, each of which I can access as /dev/sdb1 and mount via fstab. I can swap them >out all day long and not have a problem. > > What doesn't work: > I have a usb2 hba and usb2 external harddrive enclosure with swappable drive trays >(very nice!) ... watching /var/log/messages, when I plug the unit in I get a usb >event but no /dev assignment. If I have hotplug running first, I get a /dev >assignment and can access the disk as normal. However, if plugged in prior to hotplug >running, the only way I can currently get the /dev assignment is a reboot, followed >by hotplug then plugging the device in. > > And worse: > Whether or not hotplug is running, if the device is removed (cable unplugged), the >drives swapped and the device re-added, the computer still reports the same harddrive >attached. It actually reports the same drive attached even when unplugged. The end >result is this: once the second drive is in place, any attempt to access it results >in a hang. The system doesn't hang, but the shell does and requires a reboot to clear. > > These symptoms appear with both monolithic and modular kernels. I'm running gentoo >1.2 with all software at latest ebuild levels, kernel 2.4.20 with latest xfs merged. >Kernel options include usb, uhci/ehci/sg/sd, etc. > > Any clues? A RTFM is warmly welcomed if you tell me WHAT to read. I don't know if >hotplug is even necessary for this, as I've never needed it for my cf/sm reader. > > Thanks for ANY help! > > > -- > [EMAIL PROTECTED] mailing list > -- [EMAIL PROTECTED] mailing list
