I had a similar problem in 8.04 with a Plextor PX-W2410TA CD burner manufactured in October 2001. Nautilus would not recognize a blank CD. I could burn using either CD/DVD creator or Brasero, but Brasero produced a "could not eject" error. This drive was working perfectly with 6.10. The workaround was to replace it with a Memorex MRX523252AJI manufactured in 2004.
Perhaps this has something to do with 8.04 using the /dev/scd0 driver instead of /dev/hdc as in 6.10?
I had a similar problem in 8.04 with a Plextor PX-W2410TA CD burner manufactured in October 2001. Nautilus would not recognize a blank CD. I could burn using either CD/DVD creator or Brasero, but Brasero produced a "could not eject" error. This drive was working perfectly with 6.10. The workaround was to replace it with a Memorex MRX523252AJI manufactured in 2004.
Perhaps this has something to do with 8.04 using the /dev/scd0 driver instead of /dev/hdc as in 6.10?