Hi, have a summary of findings with the exploration of cdrskin's stall on USB with Linux kernel 2.4:
I attached a PHILIPS SPD3300L USB DVD writer to my system with kernel 2.4.21-215-athlon. That drive works well with cdrecord and libburn on several kernel 2.6 systems. The stall occurs as with Giulio's LG drive. So it is not a peculiarity of the drive but of the driver(s) involved. The stall always occurs with command 46h GET CONFIGURATION. The additional command 1Eh PREVENT ALLOW MEDIUM REMOVAL comes from the cleanup routine triggered by the interrupt handler of cdrskin. telltoc has no interrupt handler at that time as it is not supposed to bring the drive into any state that needs cleanup. (The code part in the drive enumeration which would issue a 1Eh command too, is not reached in both cases.) Obviously the driver does not obey the timeout set by libburn in sg_io_hdr_t.timeout . I am not sure wether i ever had a timeout with the ATA drives. I will now try to get the 46h command and others through the system. dvd+rw-tools will show me the way. As soon as libburn is able to cope with my USB situation i will ask Giulio to try again. Have a nice day :) Thomas -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
