Play after pause sometimes starts at the beginning of the CD again,
although it also sometimes works correctly. Here's an example when it
fails:
$ cdinfo -v ; cdpause ; cdinfo -v
play 8 21:41.06 1:35.31
paused 8 21:41.07 1:35.32
$ cdinfo -v ; cdplay ; cdinfo -v
no-status 0 21:41.07 1:35.32
play 1 0:02.01 0:00.01
$
The CD player wasn't touched in between the two command lines above.
FWIW,
$ cat /proc/ide/hdc/model
ASUS CRW-4012A
$ cat /proc/ide/drivers
ide-cdrom version 4.59
ide-disk version 1.10
$