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SubjectRe: [BUG] Linux-2.6.31-rc1-git9 Cannot Recognize Empty DVD Media
(cc linux-scsi)

On Thu, 02 Jul 2009 16:23:00 +0300
Tarkan Erimer <tarkan.erimer@turknet.net.tr> wrote:

> Hi,
>
> I just compiled 2.6.31-rc1-git9 to give it a try. The problem I
> encountered with this release is that it cannot recognize empty DVD
> (probably CD will be the same. But, I didn't try it.) media with K3b.
> I'm having the below error messages in dmesg. Also, I tried with several
> new empty DVD medias. So, I'm sure that it's not a faulty DVD media. The
> same media burns fine with K3b under <= 2.6.31-rc1-git6.
>
>
> [ 4526.724245] cdrom: This disc doesn't have any tracks I recognize!
> [ 4526.748278] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [ 4526.748285] sr 0:0:0:0: [sr0] Sense Key : Illegal Request [current]
> [ 4526.748292] sr 0:0:0:0: [sr0] Add. Sense: Illegal mode for this track
> [ 4526.748300] end_request: I/O error, dev sr0, sector 0
> [ 4526.748307] Buffer I/O error on device sr0, logical block 0
> [ 4526.750295] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [ 4526.750302] sr 0:0:0:0: [sr0] Sense Key : Illegal Request [current]
> [ 4526.750308] sr 0:0:0:0: [sr0] Add. Sense: Illegal mode for this track
> [ 4526.750316] end_request: I/O error, dev sr0, sector 0
> [ 4526.750321] Buffer I/O error on device sr0, logical block 0
> [ 4586.738212] cdrom: This disc doesn't have any tracks I recognize!
> [ 4586.753644] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [ 4586.753652] sr 0:0:0:0: [sr0] Sense Key : Illegal Request [current]
> [ 4586.753659] sr 0:0:0:0: [sr0] Add. Sense: Illegal mode for this track
> [ 4586.753668] end_request: I/O error, dev sr0, sector 0
> [ 4586.753673] Buffer I/O error on device sr0, logical block 0
> [ 4586.757373] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [ 4586.757379] sr 0:0:0:0: [sr0] Sense Key : Illegal Request [current]
> [ 4586.757384] sr 0:0:0:0: [sr0] Add. Sense: Illegal mode for this track
> [ 4586.757391] end_request: I/O error, dev sr0, sector 0
> [ 4586.757395] Buffer I/O error on device sr0, logical block 0

There are no recent changes to cdrom.c. Maybe it's due to a scsi change?


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