Alan Stern wrote:
On Thu, 10 Jan 2008, Sean Darcy wrote:
But it's all fixed - probably by sunspots.
I unplugged the MyBook and moved it over to a laptop. That worked under
Fedora. Then I took it back to the original desktop, and that worked!!
Jan 10 14:02:57 testbox kernel: usb 3-1: new full speed USB device using
uhci_hcd and address 2
Jan 10 14:03:10 testbox kernel: usb 3-1: new full speed USB device using
uhci_hcd and address 3
Jan 10 14:03:10 testbox kernel: usb 3-1: configuration #1 chosen from 1
choice
Jan 10 14:03:10 testbox kernel: Initializing USB Mass Storage driver...
Jan 10 14:03:10 testbox kernel: scsi6 : SCSI emulation for USB Mass
Storage devices
Jan 10 14:03:10 testbox kernel: usbcore: registered new interface driver
usb-storage
Jan 10 14:03:10 testbox kernel: USB Mass Storage support registered.
Jan 10 14:03:15 testbox kernel: scsi 6:0:0:0: Direct-Access WD
4000YS External 101a PQ: 0 ANSI: 4
..............
I think the key was unplugging the device. My bet is that when it's been
powered up for some period of time, it no longer makes whatever usb
noises it should make when the cable is connected.
So now it Works For Me. Note is always did work under Windows. Perhaps
there's some usb signal that restarts the handshake from a device like
this that goes to sleep?
I wouldn't be so quick to assume it's working right. Notice in the
messages above: "full speed". You don't want to operate a 500 GB drive
at full speed.
This doesn't explain why the drive failed to work at full speed in your
earlier test, though. Whatever the reason, you should verify that it
really does work at high speed.
Alan Stern
I didn't have ehci_hcd loaded. Now it shows high speed:
............
Jan 11 18:53:22 testbox kernel: usb 1-3: new high speed USB device using
ehci_hcd and address 2
Jan 11 18:53:22 testbox kernel: usb 1-3: configuration #1 chosen from 1
choice
Jan 11 18:53:22 testbox kernel: scsi8 : SCSI emulation for USB Mass
Storage devices
Jan 11 18:53:27 testbox kernel: scsi 8:0:0:0: Direct-Access WD
4000YS External 101a PQ: 0 ANSI: 4
........
But how do you "verify" high speed? hdparm?
sean
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