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Description of problem:
K3B fails to burn iso images because cdrdao can't find the
cd-rw device (ASUS CRW-5224A USB 2.0 external).

Even though K3B correctly lists the cd-rw in the Devices section
and lists all its capabilities, cdrdao returns this error:

System
-----------------------
K3b Version: 0.11.9
KDE Version: 3.2.2-6 Red Hat
QT Version:  3.3.2

cdrdao
-----------------------
Cdrdao version 1.1.8 - (C) Andreas Mueller <andreas>
  SCSI interface library - (C) Joerg Schilling
  Paranoia DAE library - (C) Monty
Check http://cdrdao.sourceforge.net/drives.html#dt for current driver
tables.
ERROR: Cannot open SCSI device '1,0,0': Cannot open '/dev/sg*'
Transport name:  sg
Transport descr.: Generic transport independent SCSI
Transp. layer ind.: 
Target specifier: bus,target,lun
Target example:  1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported
Transport name:  pg
Transport descr.: SCSI transport for ATAPI over Parallel Port
Transp. layer ind.: 
Target specifier: bus,target,lun
Target example:  1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported
Transport name:  ATA
Transport descr.: ATA Packet specific SCSI transport
Transp. layer ind.: ATAPI:
Target specifier: bus,target,lun
Target example:  ATAPI:1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported
Transport name:  ATA
Transport descr.: ATA Packet specific SCSI transport using sg interface
Transp. layer ind.: ATA:
Target specifier: bus,target,lun
Target example:  1,2,0
SCSI Bus scanning: supported
Open via UNIX device: not supported
ERROR: Please use option '--device [path:]bus,id,lun', e.g. --device
0,6,0 or --device ATAPI:0,0,0
ERROR: Cannot setup device 1,0,0.

cdrdao comand:
-----------------------
/usr/bin/cdrdao write --device 1,0,0 --speed 52 --overburn -n -v 2
--eject --remote 17 /tmp/kde-root/k3bNrD2Mb.tmp.cue 


Its also interesting to note that cdrecord doesn't work either:

$ cdrecord --scanbus
Cdrecord-Clone 2.01a27-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004
J�rg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to
<warly>.
Note: The author of cdrecord should not be bothered with problems in
this version.
scsidev: 'ATA'
devname: 'ATA'
scsibus: -2 target: -2 lun: -2
Warning: Using badly designed ATAPI via /dev/hd* interface.
cdrecord: Permission denied. Cannot open '/dev/hda'. Cannot open SCSI
driver.
cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you
are root.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.



Version-Release number of selected component (if applicable):
cdrdao-1.1.8-3

How reproducible:
Always

Steps to Reproduce:
1. Run K3B
2. Select an image to burn (bin/cue)
3. Click on burn
    

Actual Results:  cdrdao fails to burn.

Expected Results:  cdrdao should burn :)

Additional info:

I temporarily fixed the problem by adding the following options
in K3B in order to by-pass cdrdao's commands:

--device /dev/scd1 --driver generic-mmc