Comment 42 for bug 220957

I have reported similar behaviour in another Launchpad bug report. See:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/228624

and my report at

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/228624/comments/48

I repeat some of that info here:

hdparm -i /dev/scd1

gives

======
/dev/scd1:

 Model=PIONEER DVD-RW DVR-110 , FwRev=1.22 , SerialNo=
 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
 RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=13395, BuffSize=64kB, MaxMultSect=0
 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes: pio0 pio1 pio2 pio3 pio4
 DMA modes: mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 *udma2 udma3 udma4
 AdvancedPM=no
 Drive conforms to: Unspecified: ATA/ATAPI-2,3,4,5

 * signifies the current active mode
======

ps aux|grep addon-storage

gives

======
root 5600 0.0 0.1 3420 1140 ? S Jul30 0:00 hald-addon-storage: no polling on /dev/fd0 because it is explicitly disabled
root 5617 0.0 0.1 3420 1148 ? S Jul30 0:00 hald-addon-storage: polling /dev/sdc (every 2 sec)
root 5620 0.0 0.1 3420 1156 ? S Jul30 0:00 hald-addon-storage: polling /dev/scd0 (every 2 sec)
root 5623 0.0 0.1 3420 1160 ? S Jul30 0:00 hald-addon-storage: polling /dev/scd1 (every 2 sec)
chandra 6799 0.0 0.0 3008 756 pts/1 R+ 00:42 0:00 grep addon-storage
======

and

the tail of dmesg with a blank CD-R in the drive is:

======
[ 590.465267] sr1: CDROM not ready. Make sure there is a disc in the drive.
[ 590.477516] sr1: CDROM not ready. Make sure there is a disc in the drive.
[ 603.758796] sr1: CDROM not ready. Make sure there is a disc in the drive.
[ 603.772636] sr1: CDROM not ready. Make sure there is a disc in the drive.
[ 717.377875] ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[ 717.377892] ata2.01: cmd a0/00:00:00:00:00/00:00:00:00:00/b0 tag 0
[ 717.377893] cdb 1b 00 00 00 03 00 00 00 00 00 00 00 00 00 00 00
[ 717.377895] res 40/00:03:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
[ 717.377898] ata2.01: status: { DRDY }
[ 722.412225] ata2: port is slow to respond, please be patient (Status 0xd0)
[ 727.390656] ata2: device not ready (errno=-16), forcing hardreset
[ 727.390665] ata2: soft resetting link
[ 732.580873] ata2: port is slow to respond, please be patient (Status 0x90)
[ 737.395481] ata2: SRST failed (errno=-16)
[ 737.395492] ata2: soft resetting link
[ 738.044299] ata2.00: configured for UDMA/33
[ 738.207340] ata2.01: configured for UDMA/33
[ 738.207361] ata2: EH complete
[ 1530.500330] sr1: CDROM not ready. Make sure there is a disc in the drive.
[ 1530.512764] sr1: CDROM not ready. Make sure there is a disc in the drive.
======

Please note that a blank CD-R is in the drive in question.

Can someone suggest some workaround please?

I am happy to provide more diagnostic reports if told what to provide.

Thanks.