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Old 07-12-2005, 02:42 AM   #1
nicola1013
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Registered: Dec 2004
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USB external harddrive works with uhci but not ehci


I bought a Seagate 160 GB USB 2.0 external hard drive. I've got an IBM R40 Thinkpad running Suse 9.3 kernel 2.6.11.4-21.7-default. When I plug in my USB drive, I get these error messages in /var/log/messages and dmesg:

usb 4-3: new high speed USB device using ehci_hcd and address 2
usb 4-3: device not accepting address 2, error -71
usb 4-3: new high speed USB device using ehci_hcd and address 3
usb 4-3: device not accepting address 3, error -71

Now, if I type in "modprobe -r ehci-hcd", then computer is happy.

Jul 12 03:34:34 linux kernel: usb 2-1: new full speed USB device using uhci_hcd and address 2
Jul 12 03:34:34 linux kernel: scsi0 : SCSI emulation for USB Mass Storage devices
Jul 12 03:34:34 linux kernel: usb-storage: device found at 2
Jul 12 03:34:34 linux kernel: usb-storage: waiting for device to settle before scanning
Jul 12 03:34:39 linux kernel: Vendor: ST316002 Model: 3A Rev: 0 0
Jul 12 03:34:39 linux kernel: Type: Direct-Access ANSI SCSI revision: 00
Jul 12 03:34:39 linux kernel: SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB)
Jul 12 03:34:39 linux kernel: sda: assuming drive cache: write through
Jul 12 03:34:39 linux kernel: SCSI device sda: 312581808 512-byte hdwr sectors (160042 MB)
Jul 12 03:34:39 linux kernel: sda: assuming drive cache: write through
Jul 12 03:34:39 linux kernel: sda: sda1
Jul 12 03:34:39 linux kernel: Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Jul 12 03:34:39 linux kernel: Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0
Jul 12 03:34:39 linux kernel: usb-storage: device scan complete
Jul 12 03:34:39 linux /etc/hotplug.d/block/50-hwscan.hotplug[7969]: new block device /block/sda
Jul 12 03:34:39 linux /etc/hotplug.d/block/50-hwscan.hotplug[8011]: new block device /block/sda/sda1
Jul 12 03:34:40 linux kernel: subfs 0.9
Jul 12 03:34:40 linux hal-subfs-mount[8026]: registered at resmgrd and called(0) /bin/mount -t subfs -o fs=floppyfss,sync,procuid,nosuid,nodev,exec /dev/sda1 "/media/SEAGATE"

However, from I vaguely gather, I don't want to be using uhci because it only runs at "full speed" and ehci runs at "high speed."

Does anyone know how to get this working with ehci?
 
Old 07-13-2005, 02:23 PM   #2
sgl
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Registered: Dec 2004
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You're right - it's working in USB 1.1, but not 2.0.

Could be a hardware problem, driver problem, etc.

Join the linux-usb-users list, and post. Or, have you tried that already? That would be the best place to get an answer from an expert.

Steve
 
Old 07-16-2005, 09:25 AM   #3
nicola1013
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I'm going to go ahead and put Windows on my laptop so I can update firmware and stuff. Sad. But thank you for the reply.
 
  


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