Re: cdrecord and "get performance" scsi errors
Hi,
Giulio Orsero wrote:
> cdrskin/cdrskin -vvv dev=/dev/scd1 -atip
> cdrskin: scanning for devices ...
I presume you then pressed Ctrl+C.
> UNIX-SIGNAL: SIGINT errno= 2
There was no SCSI command failing until the stall
occured.
> telltoc test:
> -----------------------------------------
> 12 00 00 00 ff 00 00 00 00 00
> 5a 00 2a 00 00 00 00 10 00 00
> 46 00 00 00 00 00 00 10 00 00
Not much is done:
12h inquires the drive and vendor id
5Ah inquires the mechanical capabilities page 2Ah of the drive
46h inquires the list of features of the drive
> cdrskin test:
> -----------------------------------------
> [...]
> 1e 00 00 00 00 00 ff bf 76 87
This additionally tried to unlock the drive tray. That would
be the last SCSI command of the drive enumeration of libburn.
After that it would have accepted the drive as usable.
Both programs telltoc and cdrskin do quite the same at that
stage of execution. They rely on functions of libburn.
So it is not yet explainable why cdrskin executed one
command more than telltoc.
To find out wether the problem is with the drive or with
the system, you could boot a system with kernel 2.6 and
check wether the errors of cdrecord and libburn persist.
For that purpose i would use the rescue system RIP Linux
http://www.tux.org/pub/people/kent-robotti/looplinux/rip/
which already contains newest versions of cdrecord, growisofs,
cdrskin and runs entirely on RAM disk. No installation,
no involuntary impact on hard disk.
> BTW, all this was on kernel.org 2.4.33 with LG E10L USB.
> On 2.4.32 (I don't thikn this is much different from 2.4.33, I cannot
> upgrade that system since it's remote) with LG 2466D USB I have to use
> 1 instead of 2, moreover this has other issues and cannot write DVD-RW
> (DVD+RW are ok)
Does dvd+rw-tools reply a single
Speed Descriptor#1: ...
with that drive ?
Oh my.
I will try to get together an USB burner and a kernel 2.4
system and see wether i can reproduce your troubles.
Have a nice day :)
Thomas
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