On Tue, 15 Mar 2005, Kent R. Frazier wrote: > OK. I forgot to mention that this USB controller is a PCI card Ali > chipset USB controller. 6 port 3 front/3back. > > The front ports are what are giving me problems with the zip drive. I am > receiving the "USB disconnect" message when using the back ports. > > I ran a test, plugging my Lexar USB 2.0 multi-card reader into the three > front ports and all three gave me the "USB disconnect" message when I > unplugged it. > > Using the back port(s) is not very convenient because of my computer > placement. Is it safe to plug/unplug a device from the "D" shaped end of > the cable? Leaving the cable plugged into the port and just unplugging > the device. I have extra cables which would allow me to do this.
It's safe to unplug either end of a USB cable. > > > Another detail that may help. When I click on the desktop icon (I'm > > > using GNOME) to unmount the zip drive (which is identified as IOMEGA) I > > > receive the following error message even though the disk auto ejects: > > > > > > Unable to eject media > > > > show more details > > > Eject: unable to open /dev/sda1 > > > > This may or may not be related. Can you unmount it from the command line > > and then mount it again? Or eject it using the icon after unmounting it > > manually? > > I can mount/unmout from the command line (as root). When it is unmounted > the icon disappears. Mounting/unmounting doesn't seem to be any problem, > nor does reading/writing to the disk. Then this is probably a separate issue. Maybe it's a permissions problem. Or maybe the icon approach works okay for unmount step and then fails in the eject step. If you want to experiment some more, you can try "eject /dev/sda" on the command line. > > The command should be "/sbin/rmmod ehci-hcd". > > OK. I tried that and it didn't make any difference. Is the effect > permanent or does it change after a reboot? You can reverse the effect by doing "/sbin/modprobe ehci-hcd". Alan Stern ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
