Sometimes no lock on digivox miniII (Ver3.0)

Sometimes no lock on digivox miniII (Ver3.0)

[Andreas Witte]

Hello List,

after changing my system to newer hardware (and use the latest driver for
af9015), it
seems the device didnt get a lock sometimes (mostly in the case the system
is started up).
I use the stick together with mythtv. If i get the partial lock, i restart
mythbackend or 
switch channel - then i get the lock. If i get it just the first time the
stick is working 
fine for the whole day. Only the very first channelpick after system start
seems to be the 
problem.

I cant reproduce this at all. Sometimes it works, sometimes not. Anybody
else seeing this? 
Im on gentoo with 2.6.28 kernel.

Any Ideas?

Regards,
Andreas

Re: Sometimes no lock on digivox miniII (Ver3.0)

[kilgota]

On Tue, 17 Feb 2009, Andreas Witte wrote:

> Hello List,
>
> after changing my system to newer hardware (and use the latest driver for
> af9015), it
> seems the device didnt get a lock sometimes (mostly in the case the system
> is started up).
> I use the stick together with mythtv. If i get the partial lock, i restart
> mythbackend or
> switch channel - then i get the lock. If i get it just the first time the
> stick is working
> fine for the whole day. Only the very first channelpick after system start
> seems to be the
> problem.
>
> I cant reproduce this at all. Sometimes it works, sometimes not. Anybody
> else seeing this?
> Im on gentoo with 2.6.28 kernel.
>
> Any Ideas?
>
> Regards,
> Andreas
>
>
> --
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>

I don't know anything about the af9015, what kind of device it is, what it 
is supposed to do, or who wrote the code, except that I just grepped the 
code for af9015, found it, and it is a USB device. So I am an outside 
observer. Here is my suspicion of what is wrong:

There was a rather nasty USB bug in 2.6.28 (no suffixes). It hit a lot of 
USB device drivers. The problem showed itself, pretty much, as you 
describe. I experienced it, too, with a couple of Gphoto camera drivers 
that I wrote which had been working ust fine for years and worked again 
just fine when I patched the kernel. So by extrapolation there is quite 
likely nothing wrong here, either. Probably, the best thing to do would be 
either to upgrade to 2.6.28.x or to downgrade to 2.6.27.x. If the problem 
goes away, good.

Theodore Kilgore

Re: Sometimes no lock on digivox miniII (Ver3.0)

[Carsten Meier]

Am Mon, 16 Feb 2009 21:54:40 -0600 (CST)
schrieb kilgota@banach.math.auburn.edu:

> 
> 
> On Tue, 17 Feb 2009, Andreas Witte wrote:
> 
> > Hello List,
> >
> > after changing my system to newer hardware (and use the latest
> > driver for af9015), it
> > seems the device didnt get a lock sometimes (mostly in the case the
> > system is started up).
> > I use the stick together with mythtv. If i get the partial lock, i
> > restart mythbackend or
> > switch channel - then i get the lock. If i get it just the first
> > time the stick is working
> > fine for the whole day. Only the very first channelpick after
> > system start seems to be the
> > problem.
> >
> > I cant reproduce this at all. Sometimes it works, sometimes not.
> > Anybody else seeing this?
> > Im on gentoo with 2.6.28 kernel.
> >
> > Any Ideas?
> >
> > Regards,
> > Andreas
> >
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe
> > linux-media" in the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> 
> I don't know anything about the af9015, what kind of device it is,
> what it is supposed to do, or who wrote the code, except that I just
> grepped the code for af9015, found it, and it is a USB device. So I
> am an outside observer. Here is my suspicion of what is wrong:
> 
> There was a rather nasty USB bug in 2.6.28 (no suffixes). It hit a
> lot of USB device drivers. The problem showed itself, pretty much, as
> you describe. I experienced it, too, with a couple of Gphoto camera
> drivers that I wrote which had been working ust fine for years and
> worked again just fine when I patched the kernel. So by extrapolation
> there is quite likely nothing wrong here, either. Probably, the best
> thing to do would be either to upgrade to 2.6.28.x or to downgrade to
> 2.6.27.x. If the problem goes away, good.
> 
> Theodore Kilgore

The bug occurs seldomly here, too. I'm using Ubuntu 8.10 with the
Ubuntu flavour of 2.6.27, some weeks old v4l-dvb-tree, and MSI digivox
II v3. I have to switch channels a couple of times to get a channel
lock. Can't reproduce it, and it doesn't happend for some time.
Possibly because of a v4l-dvb- or kernel- update.

Cheers,
Carsten