[mythtv-users] change in hostname/dhcp/router = instability?

[Max Palatnik]

Sean,
 
 Which router is it? What's firmware is it running? 

Have you tried changing it back to see if the problem continues?
 
Max

Sean Goodpasture wrote:
> running mythdora FWIW.
>
> I've got a linksys router and got the wild hair to install DD-WRT on
> it today.  One of the things you can do is static DHCP.  This allows
> you to make sure that a given box always gets the same IP.  I guess
> that it also does something with DNS?  I didn't change the hostname,
> just the way that the IP is assigned.  The hostname actually stayed
> the same, but now I can reach the backend by name rather than only by
> IP.
>
> In any case, since doing this, I get all sorts of instability with my
> main backend.  When watching live TV (on a remote frontend) I get
> random crashes when changing the channel.  Sometimes the crash happens
> when I'm playing around in recordings or recording settings.
>
> I did watch most of the football 2nd half this evening, but right
> after it borked when I went to check the score of the college game on
> ESPN.
>
> The bad thing is that there is nothing in the log at all.  Just a
> changing to Live TV on my tuner and then the restart stuff from when I
> restart the backend.
>
> One time there was a dump in the log:
> 2007-12-29 19:52:38.241 TVRec(7): HW Tuner: 7->7
> *** glibc detected *** /usr/bin/mythbackend: malloc(): memory
> corruption (fast): 0x09f92c2f ***
> ======= Backtrace: =========
> /lib/libc.so.6[0x252621]
> /lib/libc.so.6(__libc_malloc+0x7e)[0x2532de]
> /usr/lib/libstdc++.so.6(_Znwj+0x27)[0x5703a7]
> /usr/lib/libstdc++.so.6(_Znaj+0x1d)[0x5704dd]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZN7QString9setLengthEj+0x3f)[0x5298e5f]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZN7QString4growEj+0x30)[0x5298ff0]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZN7QString6insertEjPK5QCharj+0x4f)[0x52990ff]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZN7QString6insertEjRKS_+0x3c)[0x529926c]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZN7QString6insertEj5QChar+0x45)[0x529fc75]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZNK14QLocalePrivate16longLongToStringExiiij+0xf5)[0x5287df5]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZN7QString6setNumExi+0x8c)[0x529e75c]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZN7QString6numberExi+0x4b)[0x529e80b]
> /usr/lib/qt-3.3/lib/libqt-mt.so.3(_ZNK7QString3argExii+0x17d)[0x529e9cd]
> /usr/lib/libmythtv-0.20.2.so.0(_ZNK18SignalMonitorValue9GetStatusEv+0xe5)[0x63fcca5]
> ======= Memory map: ========
>
> I built this backend about a month ago, and did a thorough burnin and
> test with memtest, so I'm reasonably confident that it's not the
> memory...
>
>
> Here's a "silent" crash example:
> 2007-12-29 22:23:31.219 MainServer::HandleAnnounce Playback
> 2007-12-29 22:23:31.230 adding: mythfrontendLR as a client (events: 0)
> 2007-12-29 22:23:31.242 MainServer::HandleAnnounce FileTransfer
> 2007-12-29 22:23:31.248 adding: mythfrontendLR as a remote file transfer
> 2007-12-29 22:23:43.878 Finished recording College Basketball "Arizona
> at Memphis": channel 5033
> -- crashed here
> 2007-12-29 22:26:08.999 Using runtime prefix = /usr
> 2007-12-29 22:26:09.103 New DB connection, total: 1
> 2007-12-29 22:26:09.127 Connected to database 'mythconverg' at host: localhost
> 2007-12-29 22:26:09.139 Current Schema Version: 1160
> Starting up as the master server.
>
>
>
> It's not reproducible 100% of the time, but if my backend is dieing,
> I'm in hot water :-)
>
> Thanks in advance,
>
> Sean
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