I bought a new and possibly unsupported device, "mpathy 3310", a
CompactFlash-based mp3 player with USB connection. I was told that it's
a USB storage device, "like all other such players and jukeboxes". But I
couldn't make my linux kernel 2.4.18 (stable Debian 3.0) work with it. I
have all scsi, usbcore, usb-uhci, usb-storage modules loaded (I
recompiled the kernel with *all* usb devices supported). usbmgr is
running, I added information about the new device (i.e. its
vendor/product numbers and the module name 'usb-storage') to
/etc/usbmgr/config file as appropriate. I get messages about
hot-plugging a new storage device, but then there are various failure
messages in kern.log and daemon.log, and the scsi subsystem hangs when I
try sg3utils such as sg_scan -i or sginfo -l or even 'cat /dev/sg0'. All
of this just hangs. fdisk /dev/sda or other devices says "no device".
The USB system and/or the scsi system seems unstable after I plug and
unplug the device a few times. I am unable to 'rmmod usb-storage'
(command hangs).
How do I diagnoze this problem further? I can provide lots of log
messages of the kind "scsi command failed", "auto-sense failure", etc.
coming from usb-storage into kern.log.
cat /proc/bus/usb/devices gives:
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB UHCI Root Hub
S: SerialNumber=8400
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=090a ProdID=1100 Rev= 1.00
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 60mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=08(stor.) Sub=01 Prot=01 Driver=(none)
E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
E: Ad=83(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
cat /proc/scsi/scsi gives:
Attached devices:
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: Model: Rev:
Type: <NULL> ANSI SCSI revision: ffffffff
however, /proc/scsi contains files /proc/scsi/usb-storage-0/0 and
/proc/scsi/usb-storage-1/1,
cat usb-storage-0/0 file gives
Host scsi0: usb-storage
Vendor: Unknown
Product: Unknown
Serial Number: None
Protocol: Reduced Block Commands (RBC)
Transport: Control/Bulk
GUID: 090a11000000000000000000
Attached: Yes
but /proc/scsi/usb-storage-1/1 is empty.
this is the problem: it tries to attach a scsi host but fails, then it
tries to attach a second scsi host and also kind of fails.
/proc/scsi/scsi gives only one host (scsi1) and not scsi0. Note that I
have no other scsi hosts or cards.
I'd appreciate any help.
--
Serge
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