Thanks for the response and sorry for the delay! I actually don't burn optical discs very often anymore and needed to wait for another opportunity to arise (my discs are DVD+R which don't work with simulated writing, and I didn't want to waste them in order to test).
With -speed=1, growisofs still writes at maximum speed (16x). However, with xorrecord, the speed control works fine. Thanks for suggesting those tools; my GNU/Linux burning knowledge has been out of date for a while and I lost track of all the forks. :-)
Thanks for the response and sorry for the delay! I actually don't burn optical discs very often anymore and needed to wait for another opportunity to arise (my discs are DVD+R which don't work with simulated writing, and I didn't want to waste them in order to test).
With -speed=1, growisofs still writes at maximum speed (16x). However, with xorrecord, the speed control works fine. Thanks for suggesting those tools; my GNU/Linux burning knowledge has been out of date for a while and I lost track of all the forks. :-)