[linux-dvb] Re: panic or freeze on PPC with kernel 2.6.x

[Christoph Ewering <eweri@cunde.de>]

Am 15.12.2004 um 00:58 schrieb Johannes Stezenbach:

> Christoph Ewering wrote:
> > I am new to this list and I am not a programmer, but I found a problem
> > I can not solve by myself. I am running vdr on an Apple Macintosh
> > PowerPC with a Siemens DVB-C card version 1.5. This worked with out a
> > problem with an old beige G3 and kernel 2.4.x but then I switched to 
> > an
> > G4 and to kernel 2.6.x.
> >
> > Now I have one serious problem: Every program that wants to grab a
> > picture from the dvb-card crashes the computer. For example when I 
> > want
> > to grab a picture with vdradmin the computer panics or freezes. The
> > computer does not answer pings, no reaction on keyboard or mouse, the
> > cursor stops blinking thats it. Another example when I run xawtv the
> > computer freezes as soon as xawtv wants to display the TV-picture on
> > the monitor. Because I am not a programmer I can not track this error
> > down, but I did some testing and this is what I found out:
> >
> > The problem does not exists in kernel 2.4.x and driver-source
> > 2003-08-11:
> > kernel 2.4.28 (selfmade) + DVB-driver 2003-08-11 (selfmade) + vdr 
> > 1.2.6
> > (debian-package) - everything is okay
> > kernel 2.4.28 (selfmade) + DVB-driver 2003-08-11 (selfmade) + vdr
> > 1.3.17 (selfmade) - everything is okay
> >
> > I get a crash or freeze with every versions of kernel 2.6.x I have
> > tested:
> > 2.6.7 debian-package,
> > 2.6.8.1 selfmade,
> > 2.6.8 debian-package,
> > 2.6.9 selfmade
> >
> > So looks to me that the dvb-driver that is included with the
> > 2.6.x-kernel-sources has a problem with PowerPC. (endian-problem?)
> What exactly is "DVB-driver 2003-08-11"?
> Do the drivers from dvb-kernel CVS, linux_2_4 branch work?
Do not know exactly, but they are a snapshot of CVs from 11.08.2004.

> Does xawtv crash both with overlay and grabdisplay mode?
Sorry, do not know how to test it. fbtv freezes also the computer. 
Looks to me that as soon as a program wants to grep pictures from the 
dvb-card the system freezes. When i grap a photo with vdradmin (sending 
telnet command to vdr)  there is no overlay or grapdisply involed, 
right?

Bye,
Christoph