[mythtv-users] 9.10/0.22 playback causes drive problems

[Jonno]

On Mon, Nov 23, 2009 at 1:43 PM, Jonno <jonnojohnson at gmail.com> wrote:
> On Mon, Nov 23, 2009 at 11:47 AM, Jonno <jonnojohnson at gmail.com> wrote:
>> Since upgrading to Mythbuntu 9.10 I've been having major problems when
>> trying to watch recorded shows. I get occasional visual abberrations
>> combined with an audio distortion that sounds a bit like a light
>> saber. After a while the show will freeze and I get a message that
>> there were too many frame buffers or something like that. It also
>> makes the drive I store recordings on inaccessible and I find I have
>> to reboot.
>>
>> My setup is an ASUS P1-AH2 barebones system with on-board Nvidia 6150
>> graphics. There is an IDE drive which hosts the system and then a SATA
>> drive (xfs) which hosts the recordings. Everything ran fine on
>> Mythbuntu 9.04
>>
>> At first I noticed that the recordings drive was heavily (>90%)
>> fragmented so I've been working on that but now it is <12% fragmented
>> and the problems are still happening. It also happens on new
>> recordings which shouldn't be fragmented at all. I've run xfs_repair
>> also and it doesn't seem to come up with any error messages.
>>
>> Has there been a major change in 0.22 that could mean my 6150 chipset
>> can't keep up with the graphics display?
>> Is there a way to check that the problem is with playback rather than
>> in the recording process?
>> I could add a graphics card but this will mean removing the wireless
>> card which in turn means getting around to wiring ethernet cable to
>> the tv which I haven't found time to do. I'd like to first figure out
>> if that is really the problem.
>>
>> Any other suggestions would be welcome.
>
> I forgot the obvious. Will post front and backend logs this evening.
>
Ok so there is a lot of this in the backend log:
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2009-11-23 06:59:00.711 [mpeg2video @ 0x7f0cbd3c7820]ac-tex damaged at 50 0
2009-11-23 06:59:00.712 [mpeg2video @ 0x7f0cbd3c7820]00 motion_type at 26 3
2009-11-23 06:59:00.840 Reschedule requested for id 0.
2009-11-23 06:59:00.902 [mpeg2video @ 0x7f0cbd3c7820]00 motion_type at 44 29
2009-11-23 06:59:00.925 [mpeg2video @ 0x7f0cbd3c7820]00 motion_type at 11 30
2009-11-23 06:59:01.150 [mpeg2video @ 0x7f0cbd3c7820]ac-tex damaged at 8 23
2009-11-23 06:59:01.331 [mpeg2video @ 0x7f0cbd3c7820]00 motion_type at 60 59
2009-11-23 06:59:01.592 [mpeg2video @ 0x7f0cbd3c7820]slice mismatch
----------
Also in the frontend log is a lot of this:
Code:
----------
2009-11-22 21:55:10.790 [mpeg2video @ 0x7f35b0d89820]ac-tex damaged at 84 25
2009-11-22 21:55:10.790 [mpeg2video @ 0x7f35b0d89820]00 motion_type at 43 26
2009-11-22 21:55:10.792 [mpeg2video @ 0x7f35b0d89820]ac-tex damaged at 91 28
2009-11-22 21:55:10.796 [mpeg2video @ 0x7f35b0d89820]Warning MVs not available
2009-11-22 21:55:13.384 [ac3 @ 0x7f35b0d89820]frame CRC mismatch
2009-11-22 21:55:13.415 [ac3 @ 0x7f35b0d89820]incomplete frame
2009-11-22 21:55:13.416 [ac3 @ 0x7f35b0d89820]invalid frame size
2009-11-22 21:55:13.914 [mpeg2video @ 0x7f35b0d89820]Warning MVs not available
2009-11-22 21:55:17.389 [ac3 @ 0x7f35b0d89820]frame CRC mismatch
2009-11-22 21:55:17.425 [ac3 @ 0x7f35b0d89820]incomplete frame
2009-11-22 21:55:17.425 [ac3 @ 0x7f35b0d89820]invalid frame size
----------
and eventually:
----------
2009-11-22 22:13:27.954 NVP(0): prebuffering pause
2009-11-22 22:13:27.999
RingBuf(/var/lib/mythtv/recordings/1181_20091121210000.mpg): Waited
1.0 seconds for data to become available...
2009-11-22 22:13:28.999
RingBuf(/var/lib/mythtv/recordings/1181_20091121210000.mpg): Waited
2.0 seconds for data to become available...
2009-11-22 22:13:29.287 NVP(0): Prebuffer wait timed out 10 times.
2009-11-22 22:13:30.620 NVP(0): Prebuffer wait timed out 20 times.
2009-11-22 22:13:31.001
RingBuf(/var/lib/mythtv/recordings/1181_20091121210000.mpg): Waited
4.0 seconds for data to become available...
2009-11-22 22:13:31.954 NVP(0): Prebuffer wait timed out 30 times.
2009-11-22 22:13:33.287 NVP(0): Prebuffer wait timed out 40 times.
2009-11-22 22:13:34.620 NVP(0): Prebuffer wait timed out 50 times.
2009-11-22 22:13:35.003
RingBuf(/var/lib/mythtv/recordings/1181_20091121210000.mpg): Waited
8.0 seconds for data to become available...
2009-11-22 22:13:35.954 NVP(0): Prebuffer wait timed out 60 times.
2009-11-22 22:13:37.287 NVP(0): Prebuffer wait timed out 70 times.
2009-11-22 22:13:38.620 NVP(0): Prebuffer wait timed out 80 times.
2009-11-22 22:13:39.954 NVP(0): Prebuffer wait timed out 90 times.
2009-11-22 22:13:41.287 NVP(0): Prebuffer wait timed out 100 times.
2009-11-22 22:13:41.287 NVP(0), Error: Timed out waiting for
prebuffering too long. Exiting..
2009-11-22 22:13:41.414 TV: Attempting to change from Watching
WatchingPreRecorded to None
2009-11-22 22:13:42.446
RingBuf(/var/lib/mythtv/recordings/1181_20091121210000.mpg): Waited
too long for ringbuffer pause..
2009-11-22 22:13:43.452
RingBuf(/var/lib/mythtv/recordings/1181_20091121210000.mpg): Waited
too long for ringbuffer pause..
----------

Any ideas? Is this likely a problem with communicating with or
recording to the drive or reading/displaying the show?

Jonno.