Comment 7 for bug 397350

I've been having this problem with Ubuntu 9.04 and hoped with an upgrade to 9.10 would fix it, but this bug is still persisting. This is also across multiple kernels including the current one for 9.10, 2.6.31-19-generic.

1. I have 2 Toshiba Laptops A100 and an A200 with the exact same symptoms.
2. On both laptops the DVD drives work perfectly in Windows Vista.
3. On the A200 still has Ubuntu 9.04 and the A100 with Ubuntu 9.10 recently upgraded to see if this problem has
    been fixed, which it has not.
4. I have attempted just about every kernel option available to fix the problem, but nothing has worked :(
5. Neither laptop has BIOS options to adjust the settings for the DVD drives.
6. The problems has persisted for several months.

I have been googling this problem and it seems to affect several distros; Ubuntu, Redhat/Fedora, Gentoo, Suse. I am finding that most responses to the problem is it must be bad hardware or CDs/DVDs or due to in activity of the bugs just assuming it has been fixed :(

The Continual Symptoms:
  [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
  sr 1:0:0:0: [sr0] Sense Key : Illegal Request [current]
  Info fld=0x0
  [sr0] Add. Sense: Illegal mode for this track

  Buffer I/O error on device sr0, logical block XXX

  ata2: lost interrupt (Status 0x50)
  ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
  ata2.00: cmd a0/01:00:00:00:08/00:00:00:00:00/a0 tag 0 dma 2048 in
                cdb be 00 00 04 d4 52 00 00 01 10 00 00 00 00 00 00
                res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
  ata2.00: status: { DRDY }
  ata2: soft resetting link
  ata2.00: configured for UDMA/33
  ata2: EH complete
  ata2.00: limiting speed to UDMA/25:PIO4
  ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
  ata2.00: cmd a0/01:00:00:00:08/00:00:00:00:00/a0 tag 0 dma 2048 in
                cdb be 00 00 04 d5 7e 00 00 01 10 00 00 00 00 00 00
                res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
  ata2.00: status: { DRDY }
  ata2: soft resetting link
  ata2.00: configured for UDMA/25
  ata2: EH complete

I have also searched the kernel bugzilla, but it hasn't seemed to reach them. Is it possible to forward this bug to them or collaborating with other distributors to validate this bug? As far as I can tell it only seems to affect laptops, but this problem gets attributed to bad hardware so fast it's hard to tell.

As time permits I'm going to start further testing my hardware with other OS's, BSD, Minix, ReactOS to see if I get any similar symptoms. If there is anything I can do to help, please let me know ;)