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<div class="moz-cite-prefix">On 2/8/15 1:45 PM, Douglas Wagner
wrote:<br>
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<div class="gmail_quote">On
Thu, Feb 5, 2015 at
11:25 AM, Philip Brady
<span dir="ltr"><<a
moz-do-not-send="true" href="mailto:phil.brady@hotmail.co.uk"
target="_blank">phil.brady@hotmail.co.uk</a>></span>
wrote:<br>
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<div dir="ltr">i
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<div>>
Date: Thu, 5
Feb 2015
23:33:46 +1100<br>
> From: <a
moz-do-not-send="true" href="mailto:michael@thewatsonfamily.id.au"
target="_blank">michael@thewatsonfamily.id.au</a><br>
> To: <a
moz-do-not-send="true"
href="mailto:mythtv-users@mythtv.org" target="_blank">mythtv-users@mythtv.org</a><br>
> Subject:
Re:
[mythtv-users]
Disk Report,
Is this Still
Safe to use?
(Was:
Muti-Year
Installation
Major Disk
Corruption)<span
class=""><br>
> <br>
> On
5/02/2015
10:16 PM, Jan
Ceuleers
wrote:<br>
> >
Cabling?<br>
> ><br>
> Power
Supply, Heat,
Full Partition<br>
> <br>
</span>inodes?</div>
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<div><span
style="font-size:12pt">Phil</span></div>
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<br>
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<br>
Wanted to get back to
this in case someone
else ran across this in
the future and this can
help them.<br>
<br>
Investigation continues
but there's something
SERIOUSLY wrong with the
old PC I had my backend
in. I can't track down
what it is, but I don't
think it was drive.<br>
<br>
Both bad blocks and
SMART tests (short and
long) came back with no
issues on the drive at
all, given this thing is
only about 6 - 7 months
old, I'm inclined to
believe that there's
nothing wrong with the
drive...to the point I
did a new build/restore
to it.<br>
<br>
To touch on a few items:<br>
<br>
* Cabling: Unlikely, no
frays and nothing has
been inside this thing
since I set it up a
couple years ago. I did
check all the
connections and they
were solid. I guess
there's a possibility of
a wire burning out, but
I have my doubts, these
cables look in pretty
good condition.<br>
* Power Supply: There's
a potential culpret, the
PS is probably 3+ years
old at this point (maybe
more). Usually when I
lose a PS I end up
losing the system
(simply "turns off" and
won't turn on and/or the
whole thing doesn't boot
properly). There is the
possibility that it's
just on an edge where
there's only BARELY
enough power making it
out of the PS to keep
the system alive. It
would explain a few
things (see below).<br>
* Heat: VERY unlikely
an issue. All fans are
active and working
properly and this case
is a top of the line
Antec from a few years
ago. I ran my main
gaming desktop out of
this case for the better
part of 4 years...if
THAT wasn't going to
overheat, this unlikely
would.<br>
* Bad Memory: Here
again is a possibility.
I didn't get a chance to
run memtest on it, I may
go back and do so just
to see what I can figure
out.<br>
<br>
Reinstall:<br>
----------------------<br>
So I went ahead and
started the process of
re-installation. After
determining the HD
didn't look like it was
at fault, I decided to
just use the old
hardware and see what I
could do with it.<br>
<br>
That's when I ran into
the installation
errors. LOTS of
installation errors,
across pretty much every
version and
implementation of
Mythbuntu I could try.
<br>
<br>
* USB Key Install:
Mythbuntu 14.04 - I must
have tried this 10 times
in different
iterations. It'd get
through the
download/copy of
packages and (I think)
start the actual install
of them (something about
building a list of
packages on the CD?
Whatever the step is in
the install after the
"copying packages" part)
and the installer would
core dump/seg fault on
me, every time.<br>
<br>
* CD Install: Mythbuntu
14.04 - Same issue as
above. Also got several
reports from one of the
subsystems during the
install that it was
failing / dumping all
throughout the process
before the installer
finally crashed on me.<br>
<br>
* USB Key Install:
Mythbuntu 12.04 -
Decided to go back to
12.04 and see if I could
make IT install
properly..maybe my
hardware is too old for
14.04 to work well?
*BUZZZZT* nope, that
didn't work either.
Same core dumps/seg
faults in the
installation.<br>
<br>
I skipped trying to CD
install of 12.04 as by
this point I was pretty
convinced something was
wrong.<br>
<br>
Moved everything over to
a secondary Linux system
(Del Optiplex 740) I
"inherited" from someone
a while back and
installation went
through
flawlessly...first time,
no issues. <br>
<br>
As if that wasn't enough
to point a finger at
some other piece of
hardware on the box, I
ended up dropping the
Dell's drives (I swapped
the Myth backend drives
for the Dell drives and
visa versa, in essence
switching systems) back
into the failed
Mythbackend's box and
booting it. System came
up, but is only stable
for about an hour or two
till I get some kind of
kernel panic with it
literally just sitting
there. If I happen to
go into X (actually log
in), it happens in about
5 10 minutes of use.<br>
<br>
Kernel panic seems to
indicate some kind of
issue with CPU, I also
thought I saw some kind
of error with graphics
card. <br>
<br>
Given all this, I'm
inclined to believe one
of a couple things:<br>
<br>
* Power Supply: My
Primary suspicion is,
given the age of the
box, there's a potential
that the PS is just not
supplying enough power
to the system
anymore...causing all
the misfires.<br>
* Motherboard: My
secondary suspicion is
that the Motherboard has
given up the ghost.
Given the kernel panics
and seg faults I was
getting during
installation on this
box, I wonder if there's
not just something
broken with the MB
itself...could account
for the CPU and Video
Card Errors.<br>
<br>
</div>
<div class="gmail_extra">I
suppose it COULD be the
CPU that's broken, but
I've never seen a CPU
give out (It's got a
hella good aftermarket
cooler on it). I don't
think the video card is
to blame (I can't see
where the video card
would be the culpret in
all the issues) but
maybe I'm not looking at
something right.<br>
</div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">Anyway
it goes, the old Myth
box is pretty much ADR
(Ain't Doin' Right) and
at the moment, I just
don't have a whole lot
of need to take that
diagnosis any farther
than I already have.<br>
<br>
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<div class="gmail_extra">--Doug<br>
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In my experience, a power supply can mimic motherboard and memory
errors and do really interesting things to a filesystem. Another
good mimic is heat, you said you had a good aftermarket heatsink/fan
combo, is it full of dust? If it gets dust clogged, it won't do its
job and you'll get errors as the CPU actually does work and heats
up.<br>
Frankly, it's a bit of a toss up, but I'd shoot for a power supply
first, after inspecting the CPU heatsink to be sure it's clear of
dust.<br>
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