[linux-dvb] Re: Reset DVB-Driver ??

[Carsten Koch <Carsten.Koch@icem.de>]

Tilo Renkl wrote:
> 
> Hi everybody,
> 
> does anyone of you know a simple way to reset (restart) the DVB-driver ?
> Klaus wrote there is a big in the DVB-driver that causes non-decoding
> channels after playback, so I need to restart the driver !
> Any solution without restarting the VDR or the complete system ?

You cannot reload the driver without restarting vdr, because the
driver cannot be unloaded while its device files are open.

I have the same problem: after running for a while, the driver becomes
unreliable. I "solved" this problem by specifying a very low watchdog
timer time ("-w 4") in the vdr call. Typically, before the driver starts
to malfunction, it seems to get sluggish. So, with a low setting, the 
watchdog timer catches driver problems before they get worse and you
can no longer reload the driver without rebooting the machine.
Since I used this setting, I never had to reboot my vdr PC due to
driver hangups. However, with "-w 4" the driver usually survives only 
between one and 9 hours before it gets reloaded:

Aug 26 00:12:19 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 03:11:38 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 04:24:14 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 13:13:48 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 13:42:56 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 14:15:27 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 15:17:43 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 17:34:06 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 21:13:46 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 22:42:36 vdr kernel: dvb: 2 dvb(s) found!
Aug 26 23:43:33 vdr kernel: dvb: 2 dvb(s) found!


Carsten.


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