errors mounting cd...

["Eloy F. Macha" <emacha@nmsu.edu>]

Hello,

 just wondering if anyone has seen this before. I have a SB16 card, and 
connected is a cd200 cd (2x).

intermittently (once a week, at least) when i try to mount the cd i get
these errors reported in syslog:

Feb 28 13:33:02 peru kernel: sbpcd-0 [11]:  DiskInfo: ReadCapacity #1 returns -7
Feb 28 13:33:08 peru kernel: sbpcd-0 [12]:  DiskInfo: ReadCapacity #2 returns -7
Feb 28 13:33:14 peru kernel: sbpcd-0 [13]:  DiskInfo: ReadCapacity #3 returns -7
Feb 28 13:33:20 peru kernel: sbpcd-0 [14]:  DiskInfo: ReadCapacity #4 returns -7
Feb 28 13:33:26 peru kernel: sbpcd-0 [15]:  DiskInfo: ReadCapacity #5 returns -7
Feb 28 13:33:32 peru kernel: sbpcd-0 [16]:  DiskInfo: ReadCapacity #6 returns -7
Feb 28 13:33:38 peru kernel: sbpcd-0 [17]:  DiskInfo: ReadCapacity #7 returns -7
Feb 28 13:33:44 peru kernel: sbpcd-0 [18]:  DiskInfo: ReadCapacity #8 returns -7
Feb 28 13:33:52 peru kernel: sbpcd-0 [19]:  DiskInfo: ReadCapacity #9 returns -7
Feb 28 13:33:56 peru kernel: sbpcd-0 [20]:  CD contains no data tracks.
Feb 28 13:33:56 peru kernel: sbpcd-0 [21]:  !st_diskok detected - retrying.
Feb 28 13:33:56 peru kernel: sbpcd-0 [22]:  !st_diskok detected - retrying.
Feb 28 13:33:56 peru kernel: sbpcd-0 [23]:  !st_diskok detected - retrying.
Feb 28 13:33:56 peru kernel: sbpcd-0 [24]:  sbp_status: failed after 3 tries
Feb 28 13:33:56 peru kernel: end_request: I/O error, dev 1900, sector 64
Feb 28 13:33:56 peru kernel: isofs_read_super: bread failed, dev 0x1900 iso_blknum 16


the command line is
#mount -t iso9660 /dev/cdrom /cdrom

where /dev/cdrom is symbolic link to /dev/sbpcd0.  

I have recompiled the kernel to include support for this drive,so no more 
modules. anyway, as you can tell form the time stamps, the command 
hangs... cannot ctrl-c out. i usually suspend (ctrl-z) and try to kill with
-3 or -9 the pid.... 

any ideas?? hw or sw problem???

thanks,

-Frank