[vdr] Re: ARM crashing again (don't buy rev 1.3, rev 1.5 for replay)

[Gregor Lawatscheck <gpel@mpex.net>]

Jarkko Santala wrote:

> Hi all,
>
> Sorry for reposting this here, but only after no useful replies from
> linux-dvb. Is anyone on this list having this problem (see below)? I'll
> start using the DVB-C-card for input too as of today, but I'm afraid the
> problem might still appear and I'll probably keep using the DVB-T-card
> too with an indoor antenna.
>
> 	-jake
I'm replying on the vdr list too because it's important for people 
buying older cards for example from ebay:
Rev 1.3 and rev 1.5 FF cards have a problem with replaying only without 
a signal attached! Rev 1.6 and later are fine. I believe the bug of this 
special case (backward compatibilty) is in the firmware somewhere and 
was introduced between Dpram / Root  1.1.2.6 and 1.1.2.7 on 30 August 
2002 and has something to do with the "internal buffer handling". That's 
only my best guess as other driver / firmware cominations seems to crash 
for different reasons, which doesn't exactly make it easy to pin-point.

The pre-newstruct driver 0.94 (works with vdr 1.1.13 which allows DVB-T 
settings) is stable with rev 1.3. cards for example and that is what I 
used for a long time before getting a rev 1.6 card. So there is hope 
that this can be fixed, however it requires help from the firmware 
wizards but they're busy people who could arguably say we should get 
cards that work properly...

> > > After browsing the mailing list archive I found this:
> > >
> > > http://www.linuxtv.org/mailinglists/linux-dvb/2003/05-2003/msg00279.html
It turned out there were two seperate problems with the firmware at the 
time. The video buffer was too small to replay some streams (aka RTL bug 
and BBC mux problem), the other was and is the ARM crash we're talking 
about here. The patch bypassed the problem but became obsolete around 
driver 1.0.0 when the video buffer was increased slightly. Unfortunately 
it didn't solve the ARM crash problems and seems to be unrelated.

- Gregor


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