[mythtv-users] LiveTV problems

[Kerry Wilson]

Having a problem watching live tv, recordings work fine but live is just 
a black screen.
Here is the error message the mythbackend produces:

error reading from: /dev/video0
read: Device or resource busy
error reading from: /dev/video0
read: Device or resource busy
error reading from: /dev/video0
read: Device or resource busy
error reading from: 2006-01-26 08:40:34.795 Changing from WatchingLiveTV 
to None
/dev/video0

the error reading from and read: Device or resource busy is repeated a 
lot of times

dmesg reports:

[4328454.222000] ivtv0: All encoder MPEG stream buffers are full. 
Dropping data.
[4328454.222000] ivtv0: Cause: the application is not reading fast enough.

Just in case (ivtv loading):

[4294690.664000] ivtv:  ==================== START INIT IVTV 
====================
[4294690.664000] ivtv:  version 0.4.2 (tagged release) loading
[4294690.664000] ivtv:  Linux version: 2.6.12-10-386 386 gcc-3.4
[4294690.664000] ivtv:  In case of problems please include the debug 
info between
[4294690.664000] ivtv:  the START INIT IVTV and END INIT IVTV lines, 
along with
[4294690.664000] ivtv:  any module options, when mailing the ivtv-users 
mailinglist.
[4294690.672000] ivtv0: Autodetected WinTV PVR 150 card (cx23416 based)
[4294690.677000] ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 18 (level, 
low) -> IRQ 18
[4294690.677000] ivtv0: Unreasonably low latency timer, setting to 64 
(was 32)
[4294690.739000] tveeprom: ivtv version
[4294690.739000] tveeprom: Hauppauge: model = 26132, rev = C599, serial# 
= 8911041
[4294690.739000] tveeprom: tuner = TCL 2002N 5H (idx = 99, type = 50)
[4294690.739000] tveeprom: tuner fmt = NTSC(M) (eeprom = 0x08, v4l2 = 
0x00001000)
[4294690.739000] tveeprom: audio processor = CX25841 (type = 23)
[4294690.739000] tveeprom: decoder processor = CX25841 (type = 1c)
[4294690.739000] ivtv0: i2c attach to card #0 ok [client=tveeprom, addr=50]
[4294690.816000] tuner (ivtv): chip found at addr 0xc2 i2c-bus ivtv i2c 
driver #0
[4294690.816000] ivtv0: i2c attach to card #0 ok [client=(tuner unset), 
addr=61]
[4294691.001000] input: ImPS/2 Generic Wheel Mouse on isa0060/serio1
[4294691.082000] cx25840 0-0044: ivtv driver
[4294691.082000] cx25840 0-0044: cx25841-23 found @ 0x88 (ivtv i2c 
driver #0)
[4294691.418000] ts: Compaq touchscreen protocol output
[4294694.503000] cx25840 0-0044: loaded v4l-cx25840.fw firmware (14264 
bytes)
[4294694.563000] ivtv0: i2c attach to card #0 ok [client=cx25840, addr=44]
[4294694.614000] wm8775 0-001b: ivtv driver
[4294694.614000] wm8775 0-001b: chip found @ 0x36 (ivtv i2c driver #0)
[4294694.623000] ivtv0: i2c attach to card #0 ok [client=wm8775, addr=1b]
[4294695.420000] ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144 bytes)
[4294695.630000] ivtv0: Encoder revision: 0x02050032
[4294695.633000] ivtv0: Allocate DMA encoder MPEG stream: 128 x 32768 
buffers (4096KB total)
[4294695.777000] ivtv0: Allocate DMA encoder YUV stream: 194 x 10800 
buffers (2048KB total)
[4294695.784000] ivtv0: Allocate DMA encoder VBI stream: 120 x 17472 
buffers (2048KB total)
[4294695.795000] ivtv0: Allocate DMA encoder PCM audio stream: 455 x 
4608 buffers (2048KB total)
[4294695.796000] tuner: type set to 50 (TCL 2002N) by ivtv i2c driver #0
[4294696.077000] ivtv0: Initialized WinTV PVR 150, card #0
[4294696.077000] ivtv:  ====================  END INIT IVTV  
====================

BTW, I am running ubuntu breezy

uname -r yields 2.6.12-10-386