Comment 10 for bug 347458

This problem
  "No common CD-ROM drive was detected"
occurs also in Xubuntu-alternate of both 9.04 and 9.10 alpha-6.

In the same box, when I am trying installing Xubuntu 9.04 desktop,
There are other installation problems (due to lack of RAM? 112MB).
But the CD is well driven and /var/log/{kern.log,syslog} show (time-stamps removed):

====
 sd 0:0:0:0: Attached scsi generic sg0 type 0
 scsi 1:0:0:0: CD-ROM MATSHITA UJDA110 1.10 PQ: 0 ANSI: 5
 sr0: scsi3-mmc drive: 14x/14x xa/form2 cdda tray
 Uniform CD-ROM driver Revision: 3.20
 sr 1:0:0:0: Attached scsi CD-ROM sr0
 sr 1:0:0:0: Attached scsi generic sg1 type 5
====

Could it be that in the 'alternate' variant, for this device,
the driver or probing-functionality is missing?