#34242 cdtool: resume doesn't

Package:
cdtool
Source:
cdtool
Description:
text-based audio CD player and CD-ROM control commands
Submitter:
Jonathan H N Chin
Date:
2026-06-15 03:59:02 UTC
Severity:
normal
Tags:
#34242#5
Date:
1999-03-08 17:42:05 UTC
From:
To:
This is probably hardware-related (my CDROM is a CREATIVE CD2423E ATAPI).
I think the drive spinning down causes the problem.

However, since the software obviously knows that the drive has not
resumed, it ought to be able to force it to do so.

cdctrl is used below just as an example. cdpause/cdplay produces
a similar effect.
#34242#10
Date:
1999-03-14 05:28:02 UTC
From:
To:
Jonathan H N Chin <jhnc@pfaff.newton.cam.ac.uk> writes:

Hi Jonathan,

I've just moved my primary system over to a computer which has exactly the
same Creative CDROM. I haven't yet noticed this behavior, but my drive has
quirks of its own - often when I eject a disc to change it, the drive tray
almost immediately disappears back into the drive. Anyway, I should be able
to test your problem quite well.

Does this problem happen with all cd's you try to play?

Regards,

	Martin.
#34242#15
Date:
1999-03-18 13:44:23 UTC
From:
To:
I haven't tried my complete collection, but I'd guess so.
#34242#18
Date:
1999-09-12 15:21:43 UTC
From:
To:
Hello Jens,

I am writing to you as maintainer of the CDROM driver for the linux kernel.
I am a developer for Debian GNU/Linux, and have been following up on the
following bug report regarding the cdtool suite of programs:

http://www.debian.org/Bugs/db/34/34242.html

As mentioned in the bug report, I happen to have the same Creative
CD2423E cdrom as does the submitter of the bug.

The problem in short, is that when playing audio, then pausing playback,
if you leave it paused for >30 seconds, then the drive spins down, and
the resume ioctl has no effect. This effect can be seen near the bottom
of the cdctrl output in the bug report:

CMD resume paused 2  5:24.53  0:23.71

(command is resume, drive status is paused - it should change to play)

I was wondering if you have seen this before, or know of some combination
of ioctls which might work around the problem?? Or is this creative drive
just broken hardware?

Regards,

        Martin.
#34242#21
Date:
1999-09-13 19:33:04 UTC
From:
To:
Hi Martin,

I believe this one is a drive bug. cdctrl does a "real" pause/resume
command and sends it to the drive. It is the drives responsibility
to resume play - regardless of whether it spindown in the time
period where it is paused. The spec isn't clear on how the
drive should behave, though.


One way to circumvent this would be to read the current playing
location immediately before pausing with the CDROMSUBCHNL
ioctl. Then you can implement your own pausing - just do a
CDROMPLAYMSF with the data, for instance.