[vdr] vdr 1.4.4 / xineliboutput 1.0.0_pre6 causes complete system freeze

Peter Weber peter_weber69 at gmx.at
Sun Dec 3 14:11:21 CET 2006


Hi,

you can test kanotix with vdr and xineliboutput in live mode. So you can check if your hardware is o.k.
http://debian.tu-bs.de/project/kanotix/preview/KANOTIX-2006-01-RC4.iso

Horst

-------- Original-Nachricht --------
Datum: Sun, 3 Dec 2006 11:31:23 +0100
Von: Matthias Dahl <ml_vdr at mortal-soul.de>
An: vdr at linuxtv.org
Betreff: [vdr] vdr 1.4.4 / xineliboutput 1.0.0_pre6 causes complete system	freeze

> Hi everyone.
> 
> I am currently trying to get away from MythTV (which never lived up to my 
> expectations). So far, vdr has been nothing but great. Except for the 
> following which just drives me crazy:
> 
> Whenever I am using vdr-sfxe or xine-ui to watch tv, switching channels 
> sometimes freezes my system hard... except for the Magic SysRq reboot key,
> its totally dead. (no remote logging, no emergency umounting, ...)
> 
> So far I have been able to come up with a testcase that reproduces the
> problem 
> or at least some problem...
> 
> 1) start vdr as demon (with xineliboutput)
> 2) fire up vdr-sxfe (use a local pipe or rtsp or whatever) or xine xvdr://
> 3) send a SIGKILL to the frontend process (so either vdr-sxfe or xine)
> 4) system freezes hard immediately without any logs or whatsoever
> 
> I believe this is the same problem I have been expierencing at random. I
> guess 
> what happened previously was that vdr-sxfe or xine died unexpectedly and 
> which naturally led to the same result.
> 
> What's interesting though, starting vdr directly (not as demon) with the 
> xineliboutput, I am unable to reproduce the problem. I can kill the
> process, 
> zap around as much as I want... no problem.
> 
> Here some more informations:
> 
> - OS: Gentoo ~amd64 (64 bit -hicks-)
> - KNC ONE DVB-C Plus with Cineview and Alphacrypt Light CAM
> - fresh (a few days old) dvb tree from mercurial repository (linuxtv.org)
> - 2.6.19rc6git10 (almost 100% identical to 2.6.19-final)
> - xinelib 1.1.3_pre20061129
> - vdr 1.4.4 with bigpatch, setup plugin, jumpplay, dvbplayer, cmdsubmenu
>   dolby-record-switch, submenu and femon
> - xineliboutput 1.0.0_pre6
> - gcc 4.1.1 (gentoo rev 2, meaning there are a lot of fixes included and
> thus
>   not vanilla)
> - glibc 2.5
> 
> Naturally I also tried older kernels and older dvb checkouts but that
> didn't 
> change anything. I do believe now that the problem is somewhere either in
> vdr 
> or in xineliboutput because my system is normally rock solid and I cannot 
> force a total freeze with just some dvb apps even if I want to. (believe
> me, 
> I tried)
> 
> Being an "computer scientist" myself, I know there is nothing more
> important 
> than debugging the whole thing. Unfortunately that's hard to do when the 
> whole system just takes a break. ;-) I tried getting getting some infos
> out of 
> this with gdb but so far nothing turned up. There is also no kernel oops
> or 
> anything like it reported.
> 
> The strangest thing about this: vdr runs as vdr:vdr and vdr-sxfe is also 
> just a regular user. Actually user processes shouldn't be able to freeze
> the 
> system hard. ;-(
> 
> By the way, I also opened up a post over at vdr-portal.de which turned up
> that 
> I am not the only one seeing this problem.
> 
> (german) http://www.vdr-portal.de/board/thread.php?postid=548719
> 
> I also email Petri (author of xineliboutput) a few days ago with roughly
> the 
> same msg here but I haven't yet received an answer.
> 
> Thanks for any help or advice in advance! If there is anything I can do to
> help to get to the bottom of this, I'd be more than glad.
> 
> Have a nice weekend,
> matthew.
> 
> _______________________________________________
> vdr mailing list
> vdr at linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr

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