linux-kernel - Re: strange behavior on multimedia eject button for cdrom

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Date:	Mon, 03 Mar 2008 20:15:03 +0000
From:	Mike Keehan <Mike@...han.net>
To:	Harald Dunkel <harald.dunkel@...nline.de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: strange behavior on multimedia eject button for cdrom

Harald Dunkel wrote:
> Hi Mike,
> 
> Mike Keehan wrote:
>> Hi Harold.
>>
>> Somewhere on the web I read that some of the M1330 media keys are 
>> directly connected to the drive, hence the lack of keycodes.
>>
>> If you eject a disk while it is being played, then the Linux driver 
>> will get a read failure.  What happens then may not be well defined :)
>>
> 
> Maybe there is some misunderstanding here: I am not playing music
> from the CD. It is idle. But if I press the CD eject button, then
> audio output (e.g. some mp3 file played from harddisk) gets
> corrupted, the network connection is dead, etc.
> 
> Ejecting the CD takes about 7 seconds. Durig this time Linux is
> dead! I haven't checked any SCHED_FIFO or SCHED_RR applications,
> but AFAIK this shouldn't happen.
> 
> If I run "eject cdrom" on the console instead, then there is no
> such problem.
> 
> 
> Regards
> 
> Harri
> 

Hi again.

Ok, I just tried doing the same thing on my M1330.  It behaves 
differently to yours in that a small section of music repeats again 
and again until the disk is ejected, and then carries on (I was using 
RealPlayer with a local file as a simple test).

And it does look like other things stop working while the disk is 
ejected - screen updates freeze and network too I think.

I'm going to be travelling for the next few days, so I won't be able 
to try anything else till later in the week.

Regards,

    Mike.



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