Hi,
im having the bad tinny audio issue on my mythtv system it has only
started recently, and is intermittent so some recordings are fine some
have bad audio, for live playback majortiy of the time audio is fine
only after going in and out and in and out of live tv sevral times did i
get the audio tinny, with no pattern its hard to predict or reproduce on
command, the source is svid and composite. cat /dev/video0 seems to test
out fine, how ever since live tv playback works most of the time i cant
say for sure that its working.
i am useing gentoo linux and ivtv v1.0.3 i was useing 2.6.24 and i
upgraded to 2.6.25 kernel but the problem remains, due to hardware
compatibility i cant downgrade kernel. i tried adding tuner=50 to module
options with no success.
executing v4l2-ctl --set-audio-input 0 ; v4l2-ctl --set-audio-input 1
when i get mythtv audio playback bad the audio goes to normal, which
doesnt help fix the problem for recordings.
my tuner is as fallows from lspci -v
05:06.0 Multimedia video controller: Internext Compression Inc iTVC16
(CX23416) MPEG-2 Encoder (rev 01)
Subsystem: Hauppauge computer works Inc. WinTV PVR 150
Flags: bus master, medium devsel, latency 64, IRQ 16
Memory at e4000000 (32-bit, prefetchable) [size=64M]
Capabilities: [44] Power Management version 2
Kernel driver in use: ivtv
Kernel modules: ivtv
dmesg output from ivtv being loaded is as fallows:
ivtv: Start initialization, version 1.2.0
ivtv0: Initializing card #0
ivtv0: Autodetected Hauppauge card (cx23416 based)
ACPI: PCI Interrupt Link [APC1] enabled at IRQ 16
ACPI: PCI Interrupt 0000:05:06.0[A] -> Link [APC1] -> GSI 16 (level,
low) -> IRQ 16
ivtv0: Unreasonably low latency timer, setting to 64 (was 32)
tveeprom 2-0050: Hauppauge model 26552, rev F068, serial# 10426282
tveeprom 2-0050: tuner model is LG TAPE H001F MK3 (idx 68, type 47)
tveeprom 2-0050: TV standards NTSC(M) (eeprom 0x08)
tveeprom 2-0050: audio processor is CX25843 (idx 37)
tveeprom 2-0050: decoder processor is CX25843 (idx 30)
tveeprom 2-0050: has radio, has no IR receiver, has no IR transmitter
ivtv0: Autodetected Hauppauge WinTV PVR-150
cx25840 2-0044: cx25843-24 found @ 0x88 (ivtv i2c driver #0)
tuner 2-0043: chip found @ 0x86 (ivtv i2c driver #0)
tda9887 2-0043: tda988[5/6/7] found
tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #0)
wm8775 2-001b: chip found @ 0x36 (ivtv i2c driver #0)
tuner-simple 2-0061: type set to 50 (TCL 2002N)
ivtv0: Registered device video0 for encoder MPG (4096 kB)
ivtv0: Registered device video32 for encoder YUV (2048 kB)
ivtv0: Registered device vbi0 for encoder VBI (1024 kB)
ivtv0: Registered device video24 for encoder PCM (320 kB)
ivtv0: Registered device radio0 for encoder radio
ivtv0: Initialized card #0: Hauppauge WinTV PVR-150
ivtv: End initialization
and firmware
ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes)
ivtv0: Encoder revision: 0x02060039
cx25840 2-0044: loaded v4l-cx25840.fw firmware (16382 bytes)
any suggestions would be much appreciated.
Kevin
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