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On 15/07/10 00:12, James Orr wrote:
<blockquote
cite="mid:AANLkTikOthN3Z6iIV8pBBAW8l_eGL8vekL69JrxXHmbw@mail.gmail.com"
type="cite"><br>
<div class="gmail_quote">On Wed, Jul 14, 2010 at 6:00 PM, James Orr <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:james.orr7@gmail.com">james.orr7@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
<div class="gmail_quote">
<div>
<div class="h5">On Wed, Jul 14, 2010 at 3:06 PM, James Orr <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:james.orr7@gmail.com" target="_blank">james.orr7@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="gmail_quote">
<div><br>
Getting worse ... now a power cycle does not fix it. In fact now it's
crashing the backend. <br>
<br>
2010-07-14 14:54:46.157 ProgramInfo(): Updated pathname '':'' ->
'1195_20100714145445.mpg'<br>
2010-07-14 14:54:46.179 ProgramInfo(): Updated pathname '':'' ->
'1195_20100714145445.mpg'<br>
2010-07-14 14:54:52.080 DevRdB(/dev/video0) Error: Poll giving up<br>
2010-07-14 14:54:52.085 MPEGRec(/dev/video0) Error: Device error
detected<br>
2010-07-14 14:54:52.086 DevRdB(/dev/video0): Stop(): Not running.<br>
2010-07-14 14:54:52.670 RingBuf(/mnt/be1hd1/1195_20100714145445.mpg):
Invalid file (fd -1) when opening '/mnt/be1hd1/1195_20100714145445.mpg'.<br>
2010-07-14 14:54:52.719 ProgramInfo(): Updated pathname '':'' ->
'1195_20100714145445.mpg'<br>
2010-07-14 14:54:52.790 ProgramInfo(): Updated pathname '':'' ->
'1195_20100714145445.mpg'<br>
2010-07-14 14:54:52.815 RingBuf(/mnt/be1hd1/1195_20100714145445.mpg)
Error: Invalid file descriptor in 'safe_read()'<br>
2010-07-14 14:54:53.006 RingBuf(/mnt/be1hd1/1195_20100714145445.mpg)
Error: Invalid file descriptor in 'safe_read()'<br>
2010-07-14 14:54:53.206 RingBuf(/mnt/be1hd1/1195_20100714145445.mpg)
Error: Invalid file descriptor in 'safe_read()'<br>
2010-07-14 14:54:53.406 RingBuf(/mnt/be1hd1/1195_20100714145445.mpg)
Error: Invalid file descriptor in 'safe_read()'<br>
<br>
That's repeated a lot until ...<br>
<br>
2010-07-14 14:55:09.130 ProgramInfo(): Updated pathname '':'' ->
'1195_20100714145445.mpg'<br>
2010-07-14 14:55:09.131 TVRec(25): Changing from WatchingLiveTV to None<br>
2010-07-14 14:55:09.134 ProgramInfo(1195_20100714145445.mpg), Error:
Unknown type, recording width was 0<br>
*** glibc detected *** /usr/bin/mythbackend: malloc(): memory
corruption: 0x08459881 ***<br>
======= Backtrace: =========<br>
/lib/libc.so.6[0xb468bfd4]<br>
/lib/libc.so.6[0xb468e555]<br>
/lib/libc.so.6(__libc_malloc+0x96)[0xb4690136]<br>
/usr/lib/qt4/libQtCore.so.4(_Z7qMallocj+0x1d)[0xb49e23bd]<br>
/usr/lib/qt4/libQtCore.so.4(_ZN10QByteArrayC1Eic+0x36)[0xb49ea426]<br>
/usr/lib/qt4/libQtCore.so.4(_Z15qt_error_stringi+0x59)[0xb49dfd09]<br>
/usr/lib/qt4/libQtCore.so.4[0xb49e6ecf]<br>
/usr/lib/qt4/libQtCore.so.4[0xb49e704b]<br>
/usr/lib/qt4/libQtCore.so.4(_ZN6QMutex4lockEv+0xf5)[0xb49e2855]<br>
/usr/lib/libmythtv-0.23.so.0(_ZN16DeviceReadBuffer15fill_ringbufferEv+0x2c)[0xb74e7fbc]<br>
/lib/libc.so.6(clone+0x5e)[0xb46ee9de]<br>
======= Memory map: ========<br>
08048000-081aa000 r-xp 00000000 03:03 4014102 /usr/bin/mythbackend<br>
081aa000-081ab000 r--p 00161000 03:03 4014102 /usr/bin/mythbackend<br>
<br>
<br>
Help!<br>
<br>
</div>
</div>
</blockquote>
</div>
</div>
<div>After I turn the HD-PVR off then on again I am able to
successfully cat /dev/video0 > tmp.mpg.<br>
<br>
The HD-PVR lights up, I get a recording.<br>
<br>
When I try to watch live TV through myth I get the above errors (except
it seems to have stopped crashing since I rebooted, but still get the
first part), the HD PVR doesn't light up, 0 byte recording. If I then
try to cat into a file again the HD PVR does not light up and I get a 0
byte file.<br>
<br>
After turning it off/on again I can cat to a file as much as I want,
but as soon as myth tries it all blows up.<br>
<br>
Will upgrading to the newer firmware help? I'm on 0x12.<br>
<br>
My mythtv install is from the gentoo ebuild 0.23 p25073. This is the
most recent available through portage.<br>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>I pulled out one of my memory sticks and it seems to be working
OK for now. </div>
</div>
<br>
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</blockquote>
I'd seriously consider running a memory checker on your system. I'd
recommend memtest86 (<a class="moz-txt-link-freetext" href="http://memtest.org/">http://memtest.org/</a>). it's free, and very good.
I think it's also included as a package in ubuntu, so you can just
apt-get install it, and it then shows up as an entry in your boot
menu. Otherwise, just burn the downloadable iso to a cd and boot from
that.<br>
<br>
If you suspect faulty ram it's always worth making sure. If you ram is
faulty, all sorts of random things can break.<br>
<br>
<br>
Alex<br>
<pre class="moz-signature" cols="72">--
Alex Tomlins
Email/Jabber: <a class="moz-txt-link-abbreviated" href="mailto:alex@tomlins.org.uk">alex@tomlins.org.uk</a>
There are two kinds of people in the world: those who finish what they started
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