[Bug 21259] New: [Dapper] H/W support regresssion

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Ubuntu | linux

           Summary: [Dapper] H/W support regresssion
           Product: Ubuntu
           Version: unspecified
          Platform: i386
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: linux
        AssignedTo: ben.collins at ubuntu.com
        ReportedBy: vincent.trouilliez at modulonet.fr
         QAContact: kernel-bugs at lists.ubuntu.com


Dapper has problems with my old (x12 speed) Plextor SCSI CD writer, it won't
burn anything anymore (works fine with Breezy)
When I insert a blank CD in it, nothing happens (from a GUI/Nautilus point of
view), and the kernel prints these errors:

Dec 19 11:09:26 localhost kernel: [17193105.656000] (scsi0:A:1:0): No or
incomplete CDB sent to device.
Dec 19 11:09:26 localhost kernel: [17193105.656000] scsi0: Issued Channel A Bus
Reset. 1 SCBs aborted
Dec 19 11:09:27 localhost kernel: [17193105.920000] sr 0:0:1:0: SCSI error:
return code = 0x10000

which get repeated over and over every few second.

I checked in Breezy, and when I insert a blank CD, Nautilus detects it, and the
kernel doesn't print any message (good or bad), it just works.

I had a look at the modules that Breezy loads:

vincent at Lotus-Esprit:~ $ lsmod |grep ai
container               4608  0
aic7xxx               165332  1
scsi_transport_spi     17920  1 aic7xxx
scsi_mod              124872  5 sg,sr_mod,aic7xxx,scsi_transport_spi,libata

... and Dapper loads exactly the same thing. Maybe one of more of these modules
have changed in the meantime ? Or maybe it's really a kernel bug not just the
driver ? 
It's going to be a show stopper for me of course, if Dapper is released in this
state, so please bug me, please ask me to do whatever experiment/troubleshooting
you need me to do, I  want my CD burner back, if just to burn future Dapper
Flight CD's ! ;-)

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