USB 2.0 two external hard drives

[jnixon]

I'm running the 2.6.11-gentoo kernel. Running UDEV.
I have 2 80gig hard drives.
Both drives work in windows.
Only one will work in linux.

The first one I plugged in will work. By work I mean, the drive will be attached to /dev/sdb.
If I plug in the second drive, the /dev/sdb is gone.

It won’t even attach the second drive to /dev/sdb by its self.

I need both drives to work at the same time.

Any suggestions????

[ekutay]

Don't you have any log messages?
_________________
-- erol

[jnixon]

Update:

Apr 29 09:58:18 linuxwww kernel: scsi16 : SCSI emulation for USB Mass Storage devices
Apr 29 09:58:18 linuxwww kernel: usb-storage: device found at 45
Apr 29 09:58:18 linuxwww kernel: usb-storage: waiting for device to settle before scanning
Apr 29 09:58:23 linuxwww kernel: Vendor: Maxtor 6 Model: Y080L0 Rev: YAR4
Apr 29 09:58:23 linuxwww kernel: Type: Direct-Access ANSI SCSI revision: 00
Apr 29 09:58:23 linuxwww kernel: SCSI device sdb: 160086528 512-byte hdwr sectors (81964 MB)
Apr 29 09:58:23 linuxwww kernel: sdb: assuming drive cache: write through
Apr 29 09:58:23 linuxwww kernel: SCSI device sdb: 160086528 512-byte hdwr sectors (81964 MB)
Apr 29 09:58:23 linuxwww kernel: sdb: assuming drive cache: write through
Apr 29 09:58:23 linuxwww kernel: sdb: sdb2 < sdb5 >
Apr 29 09:58:23 linuxwww kernel: Attached scsi disk sdb at scsi16, channel 0, id 0, lun 0
Apr 29 09:58:23 linuxwww kernel: Attached scsi generic sg1 at scsi16, channel 0, id 0, lun 0, type 0
Apr 29 09:58:23 linuxwww kernel: usb-storage: device scan complete
Apr 29 09:59:07 linuxwww kernel: usb 1-6: new high speed USB device using ehci_hcd and address 46
Apr 29 09:59:07 linuxwww kernel: usb 1-6: device descriptor read/64, error -71
Apr 29 09:59:07 linuxwww kernel: usb 1-6: device descriptor read/64, error -71
Apr 29 09:59:07 linuxwww kernel: usb 1-6: new high speed USB device using ehci_hcd and address 47
Apr 29 09:59:07 linuxwww kernel: usb 1-6: device descriptor read/64, error -71

lsusb
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 045: ID 0d49:3100 Maxtor
Bus 001 Device 001: ID 0000:0000

[ekutay]

Could be a kernel bug, would you mind to compile in CONFIG_USB_STORAGE_DEBUG and try again?
Maybe the output will fit into dmesg...
_________________
-- erol

[jnixon]

Sure, this is on a live server so I will post the output on monday afternoon.