[linux-dvb] Re: Patch for frontends/ves1820.c

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Dennis Noordsij wrote:
> 
> Hi Klaus,
> 
> It maybe helps against losing the lock too quickly, but it doesn't improve
> tuning time in general for me :-(

It wans't about improving tunign time, anyway. It was about making the new
driver usable at all, since without that line I had dropouts every few seconds.
With this line I have been using the new driver since yesterday any it works
fine so far.

> I found though that if I return from dvb_bend_frequency straight away, so
> without bending anything :) both cards tune much faster.

But couldn't that cause interference between the two tuners in case they are
both tuned to the same transponder? I guess that's what dvb_bend_frequency
tries to avoid.

> I can now (give or take 1 out of 20 tries) zap around in VDR and while tuning
> is a little slower than the old driver, it does work.
> 
> Lots of mpeg artifacts in transfer mode though, and one ARM crash while
> fastforwarding with OSD on on a time-shifting card.

Using the OSD when replaying (no matter whether it's a normal replay or Transfer
Mode) may always cause artifacts.

> Most reports I've read about ARM crashes have to do with either heat, or a
> combination of a very busy ARM (i.e. timeshifting) and fast updating OSD.
> 
> If the OSD would be limited to say 4-5 updates per second, might that help?
> It's true that for ff and cutting it's updated much more than that.

It can't hurt if you try it. Let's know what happens then.

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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