[linux-dvb] Re: Full featured DVB-T card update

[Juergen Peitz <peitz@snafu.de>]

On Sunday 10 August 2003 15:00, Juri Haberland wrote:
> Juri Haberland wrote:
> > Ok, I'll enable debugging then.
>
> So I did. And it did nothing good :(
>
> The first run ended in a locked up frontend after VDR started it's EPG
> scan without any lockup-message in the logs:
>
> [loading the driver and starting vdr, then I switched to a couple of
> channels:]
> Aug  9 12:06:41 glotze kernel: sp8870_set_frontend: Delay (40 usec)
> Aug  9 12:06:44 glotze vdr[32402]: switching to channel 3
> Aug  9 12:06:44 glotze kernel: sp8870_set_frontend: Delay (440 usec)
> Aug  9 12:06:47 glotze vdr[32402]: switching to channel 4
> Aug  9 12:06:47 glotze kernel: sp8870_set_frontend: Delay (20 usec)
>
> [and after five hours the EPG scan kicks in:]
>
> Aug  9 17:07:07 glotze kernel: sp8870_set_frontend: Delay (20 usec)
> Aug  9 17:07:28 glotze kernel: sp8870_set_frontend: Delay (50 usec)
> Aug  9 17:07:49 glotze kernel: sp8870_set_frontend: Delay (50 usec)
> ...
> Aug  9 17:43:35 glotze kernel: sp8870_set_frontend: Delay (20 usec)
> Aug  9 17:43:56 glotze kernel: sp8870_set_frontend: Delay (40 usec)
> Aug  9 17:44:17 glotze kernel: sp8870_set_frontend: Delay (50 usec)
> Aug  9 17:44:59 glotze kernel: sp8870_set_frontend: firmware lockup!
> Aug  9 17:44:59 glotze kernel: sp8870_set_frontend: Delay (10 usec)
> Aug  9 17:44:59 glotze kernel: sp8870_set_frontend: firmware lockup
> recovered!

So far it looks ok to me, but then it starts:

> Aug  9 17:45:01 glotze kernel: sp8870_set_frontend: Delay (0 usec)
> Aug  9 17:45:32 glotze last message repeated 108 times

This I don't understand. It seems like the EPG-scan tries to change channels 
very quickly. A 108 times in 31 seconds?

> Aug  9 17:45:40 glotze last message repeated 44 times
> ...

same as above and it keeps on going on like that.

> and so on for hours, until I came back in, tried to switch to different
> channels and had to reload the driver.
> Unfortunatly I forgot to change the script which reloads the driver so
> the alps_tdlb7.o loaded without debug=1.
> But after another five hours VDR's EPG-scan kicked in once again and I
> got this in my logs:
>
> Aug 10 05:27:24 glotze kernel: sp8870_set_frontend: firmware
> crash!!!!sp8870_set_frontend: firmware crash!!!!sp8870_set_frontend:
> firmware crash!!!!sp8870_set_front
> end: firmware crash!!!!sp8870_set_frontend: firmware
> crash!!!!sp8870_set_frontend: firmware crash!!!!sp8870_set_frontend:
> firmware crash!!!!sp8870_set_frontend: fir
> mware crash!!!!sp8870_set_frontend: firmware
> crash!!!!sp8870_set_frontend: firmware crash!!!!sp8870_set_frontend:
> firmware crash!!!!sp8870_set_frontend: firmware cr
> ash!!!!sp8870_set_frontend: firmware crash!!!!sp8870_set_frontend:
> firmware crash!!!!sp8870_set_frontend: firmware
> crash!!!!sp8870_set_frontend: firmware crash!!!!s
> p8870_set_frontend: firmware crash!!!!sp8870_set_frontend: firmware
> crash!!!!sp8870_set_frontend: firmware crash!!!!sp8870_set_frontend:
> firmware crash!!!!sp8870_se
> t_frontend: firmware crash!!!!sp8870_set_frontend: firmware
> crash!!!!sp8870_set_frontend: firmware crash!!!!sp8870_set_frontend:
> firmware crash!!!!sp8870_set_fronte
> nd: firmware crash!!!!sp8870_set_frontend:

here we have a detected firmware crash. The message repeats with every attemp 
to set frontend parameters, this is also normal - except that a crash 
shouldn't happen at all of course ;-). Seems that I forgot a "\n" in the 
printk that's why the messages looks strange.

So the problem is the EPG-scan, did you had problems with it before? I mean 
without the patch? I normally always have EPG-scan disabled. Will enable it 
and see what will happen.

Juergen




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