These cameras have a bug in them which appears to the storage driver as a
series of on-the-wire bit errors. The usb-storage driver winds up
rejecting the status report from the camera as garbled because of this, and
so all commands fail.
I can tell you the one-line modification to the kernel source that will
work around this, but the fix isn't going to be merged into the kernel
because it's indistinguisable from a real-world cabling problem.
Let me know if you want the fix.
Matt
On Sun, Nov 04, 2001 at 01:20:46PM +0100, Rolf Groppe wrote:
> I tried to connect a camera C-1 to my system. This camera ist detected
> as storage device and the module usb-storage is loaded. In /proc/scsi I
> find a subdirectory usb-storage-0 and when changing in this subdirectory
> I see a file named 1 with the following content:
>
> Host scsi1: usb-storage
> Vendor: OLYMPUS
> Product: C-1
> Serial Number: 169107740
> Protocol: Transparent SCSI
> Transport: Bulk
> GUID: 07b401020000000169107740
> Attached: 1
>
> But there is no entry for the camera in /proc/scsi/scsi and I'm not
> able to mount it as a SCSI device. Why that ? When I remove the
> usb-storage module and then start vmware with W2K the camera will be
> detected as a removable harddrive.
> I don't know how to use this camera under linux.
>
> Some data that might be useful:
> System: AMD Athlon 1 GHz, 768 MB RAM
> OS: Linux Kernel 2.4.13
>
> Output of /proc/bus/usb/devices:
> T: Bus=02 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-alt Root Hub
> S: SerialNumber=d800
> 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=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
> B: Alloc= 11/900 us ( 1%), #Int= 1, #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-alt Root Hub
> S: SerialNumber=d400
> 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=01 Cnt=01 Dev#= 2 Spd=12 MxCh= 5
> D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
> P: Vendor=0611 ProdID=0001 Rev= 0.00
> C:* #Ifs= 1 Cfg#= 1 Atr=60 MxPwr=100mA
> I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
> E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl=255ms
> T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
> D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
> P: Vendor=0611 ProdID=0002 Rev= 0.00
> C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
> I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=hid
> E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms
> T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#= 4 Spd=12 MxCh= 0
> D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
> P: Vendor=07b4 ProdID=0102 Rev=10.62
> C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA
> I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
> E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
> E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
>
> Maybe someone has a good idea for me.
>
> Greetings
> Rolf
>
>
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--
Matthew Dharm Home: [EMAIL PROTECTED]
Maintainer, Linux USB Mass Storage Driver
Hey, has anyone seen the Microsoft sales guy? It's his feeding time...
-- Mike
User Friendly, 4/17/1998
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