Re: sorta solved: "AVC Status: Unknown state" on recent kernels

On Oct 30 Michael Shigorin wrote:
> just for the record: kino-1.3.4 rebuilt against libdc1394 at

Don't you mean libraw1394 or libacv1394?  And if it is libraw1394, which
exact version are you using now?

> least fix the tape rewinding in capture mode -- this message
> on console log still stays:
> 
> AVC Status: Unknown state
> 
> as well as somewhat weird control buttons behaviour (sort of
> blinking and sporadic timer resets)
>     *but*
> at least the "rewind all the way back" works for me again :)
> 
> The breakage came after updating from a distribution branch
> with 2.6.32 based kernel to the current one with 3.0.[68]
> (there was at least one 2.6.32 out there packaged using the
> former IEEE1394 stack back then).

What is the precise type of the camcorder?

On October 22, I pushed an update to
git://git.user.in-berlin.de/s5r6/libraw1394.git which improves reliability
of AV/C control and status polling with some old Panasonic and Grundig
camcorder models.
https://redmine.user.in-berlin.de/projects/libraw1394/repository/revisions/8e433bf58413725365654c27fb4fad0aad88b516

However, the sort of camcorders which was affected by the issue which is
fixed in this commit would be borderline non-functional with firewire-core
of kernels older than v3.1, hence I suspect yours is not one of them.
These camcorders need this kernel change which was released in v3.1:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=aaff12039ffd812d0c8bbff50b87b6f1f09bec3e
(The remaining problems whith these camcorders which are mentioned in the
changelog of that kernel patch have benn fixed now by the above libraw1394
patch.)
-- 
Stefan Richter
-=====-==-== =-=- ====-
http://arcgraph.de/sr/

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