Thinkpad panic woes (was Re: CDRW causes Thinkpad T41 to panic)

[Tobias Roth]

On Tue, Jun 01, 2004 at 09:12:00PM -0400, Daniel Eischen wrote:
> > ad0: 35293MB <HTS548040MAT00> [71707/16/63] at ata0-master UDMA100
> > ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> > ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> > acd0: CDRW <UJDA755zDVD/CDRW> at ata1-master UDMA33
> > Memory modified after free 0xc44d8a00(508) val=1ff01ff @ 0xc44d8a00
> 
> Has anyone figured this out yet?  Here's a traceback from my

here are my observations: I have a T30 running -CURRENT from May 25th and
i was able to test with two cdrw drives. one worked (almost) perfectly,
the other one i consider broken after the results of my tests.

i was always able to boot, never got a panic. with the broken drive, i got
the
  ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
errors others are seeing. the non-broken one did not show any errors during
boot.

with the non-broken one, i was able to write several cd-r in a row. i
verified all of them, they are fine. i used
  burncd -e -s max data image.iso fixate
to burn them. after the last burn, however, i got these errors when i
tried to mount the cd-r (no errors during burn, however):
  kernel: acd0: WARNING - REQUEST_SENSE read data overrun 18>0
  last message repeated 58 times
i rebooted the machine and was then able to mount and read the same cd-r
without an error. so this is were a bug in FreeBSD might be.

now the errors the broken drive showed during both writing and reading:
  kernel: acd0: FAILURE - READ_TRACK_INFO ILLEGAL REQUEST asc=0x24 ascq=0x00 error=4<ABORTED>
  kernel: acd0: WARNING - REQUEST_SENSE read data overrun 18>0
  last message repeated 58 times
  kernel: acd0: FAILURE - REQUEST_SENSE MEDIUM ERROR asc=0x0c ascq=0x00 error=4<ABORTED>
  kernel: acd0: WARNING - REQUEST_SENSE read data overrun 18>0
  last message repeated 58 times

luckily, my broken drive still is on warranty. damn shame they break so
easily, i harldy used it and do not take it with me when moving around
with the laptop most of the time.

hopefully, my obervations helped anyone.

cheers, t.