[mythtv-users] Help debugging a consistent backend crash

[Lee McLaren]

I chased a constant crash issue for months, segfaults etc, sometimes 3 a 
day, other times ok for weeks.
I desperation I decided to remove half the memory to test, it had 
previously passed memtest etc without problems.
I had 16GB (because it is soo  cheap) of Corsair memory in 2 banks ( 4 
sticks), remove half so back to 8GB, never crashed since, that was 2 
months ago.

I had tried everything to fix the problem, thought it was mythcommflag 
at one stage.

I don't know if the memory is faulty, or it is some weird issue with the 
MB or Ubuntu / Myth does not like too much memory in this config.

Of course there is no difference between 8 and 16 GB for performance.

regards

Lee

On 25/01/2013 01:21, Tom Lichti wrote:
> On Thu, Jan 24, 2013 at 1:00 AM, Gregorio Gervasio, Jr. 
> <gregorio.gervasio at gmail.com <mailto:gregorio.gervasio at gmail.com>> wrote:
>
>     >>>>> John Nissley writes:
>
>     > I tried to follow the debugging guide in the wiki with no luck. I am
>     > still having a consistent master backend crash with a segmentation
>     > fault but I have no idea how to find out what is causing it.
>     > I am running fedora 18 and a recent trunk build and I assume others
>     > are not having the issue or there would be more noise on the mailing
>     > list. Any help would be appreciated.
>     > Setup:
>     > One original hdhomerun
>     > One hdhr3
>     > Two hdpvrs
>     > Two fedora backend / frontend combo boxes
>
>
>             Does it fail only if the slave backend is up?  I'm not
>     sure why
>     it's not happening to others but I get segfaults like the one reported
>     here:
>
>     http://code.mythtv.org/trac/ticket/11318
>
>     I believe it's caused by a problem I reported a bit earlier:
>
>     http://code.mythtv.org/trac/ticket/11316
>
>     The patch I posted there fixes it for me.  The other reporter thinks
>     there is a problem with the patch, although I'm not seeing it myself
>
>
> I have a similar setup as the OP (1 master, 1 slave, 2 HDHR2's, 1 
> HD-PVR and 1 PVR-USB on FC16, latest trunk), and I too was seeing 
> crashes, but only when the slave was running. Leaving the slave out my 
> backend would run for days without issue, as soon as the slave was 
> running, crashes, crashes everywhere. With the patch from 11316, I 
> have not had any issues with the backend crashing.
>
> Tom
>
>
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