Re: Linux-2.6.13-rc6: aic7xxx testers please..

Philipp Matthias Hahn
2005-08-11T15:31:55Z

Hello Michael!

On Thu, Aug 11, 2005 at 02:37:20PM +0200, hunold@linuxtv.org wrote:
> >I got the following OOPS from running "alevtd -F -d -v /dev/vbi0" with
> >my Siemens-DVB-C on a Dual-i686-600. I'm able to reproduce this even
> >running a 2.6.12-rc6 without the nvidia module tainting the kernel.
>
> So you're using the analog tuner of the card to watch analog cable tv and
> want to decode teletext from the vbi, right?

Yes.

> Can you tell me the last kernel version that worked for you?

Sorry, it never worked before: After accessing /dev/vbi the computer
locked up after some time: no keyboard, only hard reset.
Might be related to that it is a dual P3-600.
I just tried it again yesterday to see if the situation with VBI
improved with the updated which went into 2.6.13-rc6 compared to the
situation half a year ago.

> >kernel BUG at drivers/media/common/saa7146_video.c:741!
>
> 739 fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat);
> 740 /* we need to have a valid format set here */
> 741 BUG_ON(NULL == fmt);
>
> This sanity check is failing. Apparently the software managed
> to select a pixelformat that cannot be translated to a "saa7146 format".
>
> Puh, I wrote this long ago. ;-) IIRC this should not be possible (ie. the
> driver should reject the unknown pixelformat in the configuring stage).

alevtd is outputting some debug information, which I'll capture for you.

> Did you update the alevt package? Perhaps it's now doing this differently
> and it would fail with older kernels as well, which have worked before.

alevtd is Debians 3.94-1

> We will probably have to debug this on a very low level.

Please feel free to contact my. Turn around might by long, since the PC
with DVB is at home without internet access, which I only have at work.

BYtE
Philipp

PS: Wir koennen auch Deutsch reden, nachdem wir die cc:-Liste reduziert
haben.
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