Arch Linux

dacull

Member

Registered: 2009-09-23

Posts: 2

usb hdd not working on usb 2.0 pci card

Prior to installing arch I had this problem intermitently under ubuntu but managed to work around it by simply waiting until after the system booted up to plug in the hard drive.  But now under arch I can't seem to mount the hdd when plugged into the usb ports on the pci card under any circumstances.  It works fine plugged into the onboard usb 1.x ports.

dmesg gives the following when I plug it into the pci card port:

usb 1-2: new high speed USB device using ehci_hcd and address 8
usb 1-2: configuration #1 chosen from 1 choice
scsi10 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 8
usb-storage: waiting for device to settle before scanning
scsi 10:0:0:0: Direct-Access     Seagate  FreeAgent        102D PQ: 0 ANSI: 4
sd 10:0:0:0: Attached scsi generic sg5 type 0
usb-storage: device scan complete
sd 10:0:0:0: [sde] 2930277168 512-byte hardware sectors: (1.50 TB/1.36 TiB)
sd 10:0:0:0: [sde] Write Protect is off
sd 10:0:0:0: [sde] Mode Sense: 1c 00 00 00
sd 10:0:0:0: [sde] Assuming drive cache: write through
sd 10:0:0:0: [sde] Assuming drive cache: write through
 sde:<6>usb 1-2: reset high speed USB device using ehci_hcd and address 8
usb 1-2: reset high speed USB device using ehci_hcd and address 8
usb 1-2: reset high speed USB device using ehci_hcd and address 8
usb 1-2: reset high speed USB device using ehci_hcd and address 8
usb 1-2: reset high speed USB device using ehci_hcd and address 8
usb 1-2: reset high speed USB device using ehci_hcd and address 8
sd 10:0:0:0: [sde] Unhandled error code
sd 10:0:0:0: [sde] Result: hostbyte=0x07 driverbyte=0x00
end_request: I/O error, dev sde, sector 0
__ratelimit: 21 callbacks suppressed
Buffer I/O error on device sde, logical block 0

attempting to mount it returns:

mount /dev/disk/by-uuid/98d011f0-9138-4126-bc3a-3ce7c05b3867
mount: special device /dev/disk/by-uuid/98d011f0-9138-4126-bc3a-3ce7c05b3867 does not exist

dmesg output when plugged into onboard usb port:

usb 4-2: new full speed USB device using uhci_hcd and address 3
usb 4-2: not running at top speed; connect to a high speed hub
usb 4-2: configuration #1 chosen from 1 choice
scsi11 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
scsi 11:0:0:0: Direct-Access     Seagate  FreeAgent        102D PQ: 0 ANSI: 4
sd 11:0:0:0: Attached scsi generic sg5 type 0
usb-storage: device scan complete
sd 11:0:0:0: [sde] 2930277168 512-byte hardware sectors: (1.50 TB/1.36 TiB)
sd 11:0:0:0: [sde] Write Protect is off
sd 11:0:0:0: [sde] Mode Sense: 1c 00 00 00
sd 11:0:0:0: [sde] Assuming drive cache: write through
sd 11:0:0:0: [sde] Assuming drive cache: write through
 sde: sde1 sde2
sd 11:0:0:0: [sde] Attached SCSI disk

and it mounts and works flawlessly (except for the obvious problem of limited speed)

I'm stumped, any idea whats going on here?

dacull

Member

Registered: 2009-09-23

Posts: 2

Re: usb hdd not working on usb 2.0 pci card

Ok, bringing this back from the dead beacuse the problem has suddenly returned after "magically" fixing it's self for the last few months.  Everything seems to be exactly back how it was before, the usb card works, the drive works, they just don't quite work together.