hpux and plextor 716A dvd-burner - SCTL_INCOMPLETE ?

[tech1214]

Got a brand-spanking new Plextor 716A dvd-burner that I would like to get working on PA-RISC 11i. So far, it has not been working.

I've got the latest ATAPI patch - PHKL_30038 on a C8000 running 11.11. I'm using dvd+rw-tools, first tried the official(?) HP drop 5.18.4.8.6 and then the latest release - 5.21.4.10.8 with identical results.

The results are that mediainfo and growisofs commands sporadically report:

:-( FAIL: S_CHECK_CONDITION status, but no sense data?

and if that happens during a burn, the disc is a coaster.

So, here's a random list of stuff I've tried and observed:

I modified the code to report more details and am seeing the SIOC_IO ioctl return with a check condition in the cdb_status, but sense_status is just SCTL_INCOMPLETE with no actual sense data.

There are no corresponding dmesg/syslog messages from the scsi pass through driver.

There is some sort of pattern in these failures, but they are not 100% repeatable. When they do happen, they often happen in response to the same CDB's - for example flush cache, immediate mode and test unit ready. But that is not 100% repeatable, those CDB's often work just fine.

I've modified the dvd+rw's wait_for_unit() routine to wait 10 seconds per test-unit-ready poll instead of just 1 second and while I can't be 100% sure, that seems to have eliminated getting the SCTL_INCOMPLETEs, at least for his test-unit-ready CDBs - with that in place I burnted a couple of hundred MB to a DVD+RW and then mounted it as cdfs without a problem. But that kind of time-delay does not seem like a reasonable solution.

The drive works fine in a windows PC.

I've tried fiddling with the jumpers, set it to master and slave, enabled/disabled dma, it doesn't make a difference.

It was tested in a different, older system (a C3600, I think) with the same results, so it isn't a cabling problem.

I have been told that on that older C3600, stm will core dump if the plextor drive is installed - I don't have the details as to what you have to do in STM to make it die.

So - has anyone got an atapi plextor 716a dvd burner working on hpux 11i? Or failing that, how about any brand of combo DVD+/- atapi burner?