[mythtv-users] Sound occasionally getting choppy, video pixelated with PVR-250

[John Brooks]

Hey, all. I'm running the .19 packages from thehunter.ws repository. I'm
running into an issue where, occasionally after watching Live TV (or perhaps
when I turn on Live TV), the sound will get choppy or warbly (wish I had
better adjectives for it) and the video will have some pixellated artifacts.
This necessitates a hard reboot. Alternatively, if I go into the Recording
Profiles and reset the quality to low (mythtv defaults) from DVD Special 2 ,
the artifacts disappear.

It also appears that ivtv is not retaining its settings. For some reason,
the input appears to be changing. The input should be 3:

sh-3.1$ ivtvctl -P
ioctl VIDIOC_G_INPUT ok
Video input 
When I reset it with ivtvctl -p 3, then go to Live TV, it switches back to
input 5! What's weirder is that if I reset, then watch Live TV, I get
perfectly good audio and video- but then see that the input has been
switched to 5 again. Bizarre. Since MythTV appears to be a factor in this, I
figured I'd ask here first before I went to the ivtv mailing list. I'm not
sure what additional info I can provide, but here's ivtv data from dmesg:

[4294688.387000] ivtv:  ========== START INIT IVTV
==========
[4294688.387000] ivtv:  version 0.4.5 (tagged release) loading
[4294688.387000] ivtv:  Linux version: 2.6.15-23-k7 SMP preempt K7 gcc-4.0
[4294688.387000] ivtv:  In case of problems please include the debug info
between
[4294688.387000] ivtv:  the START INIT IVTV and END INIT IVTV lines, along
with
[4294688.387000] ivtv:  any module options, when mailing the ivtv-users
mailinglist.
[4294688.388000] ivtv0: Autodetected WinTV PVR 250 card (cx23415 based)
[4294688.388000] ivtv0: Unreasonably low latency timer, setting to 64 (was
32)
[4294688.471000] tveeprom: ivtv version
[4294688.471000] ivtv0: i2c attach to card #0 ok [client=tveeprom, addrP]
[4294688.497000] tuner (ivtv): chip found at addr 0xc2 i2c-bus ivtv i2c
driver #0
[4294688.497000] ivtv0: i2c attach to card #0 ok [client=(tuner unset),
addra]
[4294688.723000] saa7115 2-0021: saa7115 found @ 0x42 (ivtv i2c driver #0)
[4294688.882000] ivtv0: i2c attach to card #0 ok [client=saa7115, addr!]
[4294688.952000] ivtv0: i2c attach to card #0 ok [client=MSP4448G-A2,
addr@]
[4294689.952000] ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144 bytes)
[4294690.141000] ivtv0: loaded v4l-cx2341x-dec.fw firmware (262144 bytes)
[4294690.371000] ivtv0: Encoder revision: 0x02050032
[4294690.381000] ivtv0: Decoder revision: 0x02020023
[4294690.381000] ivtv0: Allocate DMA encoder MPEG stream: 128 x 32768
buffers (4096KB total)
[4294690.381000] ivtv0: Allocate DMA encoder YUV stream: 194 x 10800 buffers
(2048KB total)
[4294690.382000] ivtv0: Allocate DMA encoder VBI stream: 120 x 17472 buffers
(2048KB total)
[4294690.382000] ivtv0: Allocate DMA encoder PCM audio stream: 455 x 4608
buffers (2048KB total)
[4294690.383000] tuner: type set to 2 (Philips NTSC (FI1236,FM1236 and
compatibles)) by ivtv i2c driver #0
[4294690.685000] ivtv0: Initialized WinTV PVR 250, card #0
[4294690.685000] ivtv:  ==========  END INIT IVTV
==========
[4294698.993000] ivtv0: i2c attach to card #0 ok [clientîprom, addrQ]
[4294698.994000] ivtv0: i2c attach to card #0 ok [clientîprom, addrR]
[4294698.995000] ivtv0: i2c attach to card #0 ok [clientîprom, addrS]
[4294698.996000] ivtv0: i2c attach to card #0 ok [clientîprom, addrT]
[4294698.997000] ivtv0: i2c attach to card #0 ok [clientîprom, addrU]
[4294698.998000] ivtv0: i2c attach to card #0 ok [clientîprom, addrV]
[4294698.999000] ivtv0: i2c attach to card #0 ok [clientîprom, addrW]

If anyone has any thoughts on this, that would be great! I hate to have to
restart after watching Live TV for fear of corrupting any upcoming
recordings (as I did tonight)!

Thanks,
Jack.
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