acd0 FAILURE READ_BIG MEDIUM

[cwidger]

uname -r
5.3-BETA7

acd0 : CDRW <qsi CD-RW/DVD-ROM SBW-241/VH04> at ata1-master UDMA33
acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x00 ascq=0x00 error=0
acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x00 ascq=0x00 error=0
acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x00 ascq=0x00 error=0
acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x00 ascq=0x00 error=0
acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x00 ascq=0x00 error=0

This happens when there's a DVD in acd0. It doesn't happen when acd0's 
empty.