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Playback of Recorded shows "floats" to a different
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Author:  mapemera [ Sun Apr 15, 2007 11:16 am ]
Post subject:  Playback of Recorded shows "floats" to a different
I've been running knoppmyth for awhile now, with everthing working pretty good. Right now I'm on R5D1. Lately I started having trouble with the playback of recorded shows. It will happen once or twice during a show, where the video gets blocky, then the video and audio switch to another channel, then after a few seconds it'll switch back to the show. When it switches back, the audio is out of sync with the video. Stopping the show and restarting where we left off fixes that.
Now... At first I thought maybe the tuner was floating to the next channel(either up or down), but that doesn't seem to be the case. My wife (she watches it more than me) seems to think that the clips it jumps to are from shows that have been deleted (kind of spooky!).

I have checked the database for errors like the sticky says. Once in a while I'll find some and fix them, but it doesn't seem to help. The HD for the recordings is using XFS filesystem. This install has been working great for quite a while before this happened.

Is my HD starting to fail? What is the best way to check?

I'm watching on a plain SDtv, nothing special. Could someone please point me in the right direction for what else to check/look for.

Now, some background:
It doesn't do it on every show.
It'll do it at the same place if you watch the show again ( so I think it happens at recording, not playback).

System: (combined front/backend)
AMD Athlon XP 2200
MB: Chaintek 7NIF2 using onboard video out and audio out
Knoppmyth R5D1
Hauppauge PVR-500
hda: WDC WD400LB-00DNA0 40gb (base install)
hdc: ST3160021A 160gb (recordings)

Another frontend:
Xbox running XBMC Python scripts. (Also skips on this system)

I can provide any more details if needed.
Thanks for any help...
Author:  tjc [ Sun Apr 15, 2007 1:36 pm ]
Post subject:  Re: Playback of Recorded shows "floats" to a diffe
mapemera wrote:
Is my HD starting to fail? What is the best way to check?

This would be my guess. Either that or a corrupted filesystem which thinks the wrong blocks are part of the file for some reason. Start by running a fsck on the /myth partition. I suspect you'll need to drop to single user mode and possibly unmount the partition or remount it read only (it's been ages since I've had to do this and I always have to look it up). Using Google to search for "checking a linux filesystem" or "repairing a linux file system" should find you some decent resources e.g. - http://www.redhat.com/docs/manuals/csgfs/admin-guide/s1-manage-repairfs.html
Author:  mapemera [ Thu Apr 26, 2007 3:56 pm ]
Post subject:  Re: Playback of Recorded shows "floats" to a diffe
It is an XFS file system, So I tried xfs_check.
From what I found google'ing, If that returns a non-zero output, it means there are errors on the drive.
There were, so I tried xfs_repair.
xfs_repair scanned the entire drive. Every once in a while it would say something about a possible alternate superblock found, pause for a minute, then say it wasn't valid(or something like that), and continue on. It never did repair anything. (I think because it couldn't find the superblocks?)

Anyway... I'll replace the drive with a bigger one that I just ordered (maybe tonight) and see if that solves the problem.

Is there something I can do different when formatting the new drive to make it easier to recover if this would happen again?
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