Hi there,
I just joint the list and I have a question about my DVD burner. I tried several kernels and hardware with the following success (??):
1. If I replace the DVD burner by a harddisk everything works (on all testet hardware & kernels)
The usb-storage protocol is different (8020i/DVD, SCSI/HD), that may well be a factor.
2. Everything works under USB 1.1 (on all tested hardware and kernel) 3. USB 2.0 does work in kernel 2.4.19 (hardware of a friend). But not in kernel 2.4.22, 2.4.22-ac4,2.4.23-rc4,2.4.23-rc5,2.6.0test9-11 (all tested hardware).
Therefore I conjecture that the problem is in the ehci-hcd module...
Not necessarily. Almost all cases we've seen recently have been cases where the high speed was turning up latent problems elsewhere in the stack (like devices that lock up if they get data quicker than Windows can deliver it), if they weren't device quirks in SCSI support. And in particular, yours is the first report I've seen of _success_ using one of those GeneSys adapters. (There may have been many successful uses, but a number of problems have been reported and they all seem to check out as hardware locking up on the GeneSys side.)
Looks like what you forwarded was a log from 2.4.something. Can you forward the corresponding output from 2.6.0-test11 after enabling both USB mass storage verbose debug (to show the higher level protocol), and USB debug (to show if anything's going wrong at the lower levels)?
What you showed was just the device not issuing a status message when it was expected. Not a failure I've seen much.
- Dave
cat /proc/scsi/usbstorage-?/? (harddisk) Host scsi0: usb-storage Vendor: Genesyslogic Product: USB Mass Storage Device Serial Number: None Protocol: Transparent SCSI Transport: Bulk GUID: 05e307020000000000000000 Attached: Yes
cat /proc/scsi/usbstorage-?/? (DVD)
Host scsi1: usb-storage
Vendor: Genesyslogic
Product: USB Mass Storage Device Serial Number: None
Protocol: 8020i
Transport: Bulk
GUID: 05e307010000000000000000
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