Re: [MPlayer-users] Weird behaviour in ide-scsi driven dvd playback with 2.6.17.x

Re: [MPlayer-users] Weird behaviour in ide-scsi driven dvd playback with 2.6.17.x

[Denis Vlasenko]

On Saturday 19 August 2006 19:34, Marcin 'Rambo' Roguski wrote:
> Because of USB camera requirements, I'm currently running double-kernel 
> setup (2.4.32-old, 2.6.17.9-new), and ide-scsi driven CD-ROM/DVD drives.
> 
> While on 2.4.32 mplayer (version doesn't matter happens with svn and 
> pre8- libdvdread compiled as default) plays DVDs perfectly well, on 2.6.17.[6|9] I'm 
> getting such messages from kernel while trying to open them:
> 
> Aug 19 18:06:33 beethoven kernel: Buffer I/O error on device sr1, logical block 4496
> Aug 19 18:06:33 beethoven kernel: Buffer I/O error on device sr1, logical block 4497
> Aug 19 18:06:33 beethoven kernel: Buffer I/O error on device sr1, logical block 4498
> [...]
> and so on...
> 
> The only workaround for now is to use ide-cd, and then it works like a charm, but I'd preffer "unified" setup (unless mplayer can use conditional statements in its config...

Sounds like kernel-side problem. ide-scsi says it have problem reding data
from the media, whereas ide-cd does not have the problem.

Does this happen while you just copy the file with cp?

[adding linux-kernel@vger.kernel.org to CC:]
--
vda

Re: [MPlayer-users] Weird behaviour in ide-scsi driven dvd playback with 2.6.17.x

[Marcin 'Rambo' Roguski]

> > Aug 19 18:06:33 beethoven kernel: Buffer I/O error on device sr1,
> > logical block 4496

> Sounds like kernel-side problem. ide-scsi says it have problem reding
> data from the media, whereas ide-cd does not have the problem.
> 
> Does this happen while you just copy the file with cp?

It turns out you were right, while I can mount the dvd quite normally:
# mount /dev/dvd -t udf /mnt/dvd
Device /dev/dvd is write-protected, mounting read-only.
UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'SOLIDARNOSC', timestamp 2036/02/07 03:58 (1078)

but any attempt to copy the file results in such kernel message.

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