linux-kernel - Re: macbook pro dvd playback after suspend Buffer I/O error

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Date:	Wed, 11 Jun 2008 22:27:35 +0000
From:	"Justin Mattock" <justinmattock@...il.com>
To:	"Tejun Heo" <htejun@...il.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: macbook pro dvd playback after suspend Buffer I/O error

On Wed, Jun 11, 2008 at 9:51 PM, Tejun Heo <htejun@...il.com> wrote:
> Justin Mattock wrote:
>> O.K. I applied the patch here is what I'm seeing:
>>
>> [  920.237141] end_request: I/O error, dev sr0, sector 2931560
>> [  920.237141] Buffer I/O error on device sr0, logical block 366445
>> [  920.237141] Buffer I/O error on device sr0, logical block 366446
>> [  920.237141] Buffer I/O error on device sr0, logical block 366447
>> [  920.237141] Buffer I/O error on device sr0, logical block 366448
>> [  920.237141] Buffer I/O error on device sr0, logical block 366449
>> [  920.237141] Buffer I/O error on device sr0, logical block 366450
>> [  920.237141] Buffer I/O error on device sr0, logical block 366451
>> [  920.237141] Buffer I/O error on device sr0, logical block 366452
>> [  920.237141] Buffer I/O error on device sr0, logical block 366453
>> [  920.237141] Buffer I/O error on device sr0, logical block 366454
>> [  925.431105] __ratelimit: 10100 messages suppressed
>> [  925.431118] Buffer I/O error on device sr0, logical block 371516
>> [  930.772658] __ratelimit: 2407 messages suppressed
>> [  930.772658] Buffer I/O error on device sr0, logical block 372720
>> [  935.674943] __ratelimit: 6995 messages suppressed
>> [  935.674955] Buffer I/O error on device sr0, logical block 376218
>> [  940.685317] __ratelimit: 16949 messages suppressed
>> [  940.685329] Buffer I/O error on device sr0, logical block 384693
>> [  945.770547] __ratelimit: 17881 messages suppressed
>> [  945.770558] Buffer I/O error on device sr0, logical block 393634
>> [  950.777243] __ratelimit: 19031 messages suppressed
>> [  950.777243] Buffer I/O error on device sr0, logical block 403150
>> [  955.788427] __ratelimit: 19035 messages suppressed
>> [  955.788439] Buffer I/O error on device sr0, logical block 412668
>> [  961.575327] __ratelimit: 16603 messages suppressed
>> [  961.575338] Buffer I/O error on device sr0, logical block 420970
>> [ 1006.919733] __ratelimit: 9315 messages suppressed
>>
>> Almost as if the drive is taking to long to think, by then the cache
>> has run out, and the FPS changes,
>> the movie itself doesn't become choppy like before, just freezes.
>> If you have any other ideas I'm up for that to see.
>> regards;
>
> Eh.... strange.  Can you post full kernel log?  And does the dvd work if
> you restart playing?
>
> --
> tejun
>

O.K. attached is dmesg of playing a dvd, then suspending and wakingup,
as well as starting after the buffer error.(audit messages)
This is interesting, even  pausing the dvd before suspending, causes
the same error.
I sent a post to mplayer-users to see if there is a way to have
mplayer pause and wait for the disk drive to align, but am still
waiting
for a response.
regards.
-- 
Justin P. Mattock

Download attachment "dmesg" of type "application/octet-stream" (52468 bytes)