Hello everyone, About a week ago I bought a PVR-500 (Samsung tuners) to put in the MythTV box I was making. Using the 0.4.2 ivtv drivers along with the tuner.c patch that Hans recently posted to the mailing list (thanks!), I believe I have both tuners working and accessible in MythTV. The problem I am having is with the reception and sound on tuner 0.
First of all, the quality of the output of tuner 1 is excellent. However, the quality of the output of tuner 0 is quite fuzzy, especially on some of the lower channels. In addition to that, tuner 0 seems to have intermittent sound problems. Sometimes when I switch to a channel with tuner 0, I will get this loud, high buzzing sound along with the TV audio. However, when I switch channels, eventually this problem goes away, even if I go back to the same channel I was originally on. I read some notes about the PVR-500 being particularly sensitive to signal strength, so I went out and bought an amplifier from Radio Shack to see if that would solve the problem. While I did see a slight increase in picture quality on tuner 0 (it's still not what I would like), the sound problem is still there and doesn't seem to have gotten any better. Is there anything else I can do to fix this problem? Might I have a bad PVR-500? I'm not sure what sort of debug output is useful to debug this, but I have seen others include the output from dmesg, which I put at the end of this message. Let me know if there's anything else I can give that would help diagnose this problem. Thanks, -Francisco [4294694.979000] ivtv: ==================== START INIT IVTV ==================== [4294694.979000] ivtv: version 0.4.2 (tagged release) loading [4294694.979000] ivtv: Linux version: 2.6.12-10-686-smp SMP 686 gcc-3.4 [4294694.979000] ivtv: In case of problems please include the debug info between [4294694.979000] ivtv: the START INIT IVTV and END INIT IVTV lines, along with [4294694.979000] ivtv: any module options, when mailing the ivtv-users mailinglist. [4294694.981000] ivtv0: Autodetected WinTV PVR 150 card (cx23416 based) [4294694.981000] ACPI: PCI Interrupt 0000:03:08.0[A] -> GSI 19 (level, low) -> IRQ 19 [4294694.981000] ivtv0: Unreasonably low latency timer, setting to 64 (was 32) [4294695.036000] tveeprom: Second (radio) tuner idx 101 [4294695.036000] tveeprom: ivtv version [4294695.036000] tveeprom: Hauppauge: model = 23552, rev = E587, serial# = 8362710 [4294695.036000] tveeprom: tuner = Samsung TCPN 2121P30A (idx = 87, type = 68) [4294695.036000] tveeprom: tuner fmt = NTSC(M) (eeprom = 0x08, v4l2 = 0x00001000) [4294695.036000] tveeprom: audio processor = CX25843 (type = 25) [4294695.036000] tveeprom: decoder processor = CX25843 (type = 1e) [4294695.036000] ivtv0: i2c attach to card #0 ok [client=tveeprom, addr=50] [4294695.038000] ivtv0: This is the first unit of a PVR500 [4294695.044000] tuner (ivtv): chip found at addr 0xc0 i2c-bus ivtv i2c driver #0 [4294695.046000] TEA5767 detected. [4294695.046000] ivtv0: i2c attach to card #0 ok [client=(tuner unset), addr=60] [4294695.046000] tuner: type set to 62 (Philips TEA5767HN FM Radio) by autodetect [4294695.046000] type set to 62 (Philips TEA5767HN FM Radio) [4294695.046000] tuner (ivtv): chip found at addr 0xc2 i2c-bus ivtv i2c driver #0 [4294695.047000] ivtv0: i2c attach to card #0 ok [client=(tuner unset), addr=61] [4294695.220000] cx25840 0-0044: ivtv driver [4294695.220000] cx25840 0-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #0)[4294696.141000] ieee1394: Host added: ID:BUS[0-00:1023] GUID[00301bb90000cdef] [4294698.313000] cx25840 0-0044: loaded v4l-cx25840.fw firmware (14264 bytes)[4294698.374000] ivtv0: i2c attach to card #0 ok [client=cx25840, addr=44] [4294698.391000] wm8775 0-001b: ivtv driver [4294698.391000] wm8775 0-001b: chip found @ 0x36 (ivtv i2c driver #0) [4294698.400000] ivtv0: i2c attach to card #0 ok [client=wm8775, addr=1b] [4294698.438000] ivtv0: Detected a TEA5767 radio tuner. Enabling radio support. [4294699.100000] ivtv0: loaded v4l-cx2341x-enc.fw firmware (262144 bytes) [4294699.310000] ivtv0: Encoder revision: 0x02050032 [4294699.310000] ivtv0: Allocate DMA encoder MPEG stream: 128 x 32768 buffers (4096KB total) [4294699.312000] ivtv0: Allocate DMA encoder YUV stream: 194 x 10800 buffers (2048KB total) [4294699.312000] ivtv0: Allocate DMA encoder VBI stream: 120 x 17472 buffers (2048KB total) [4294699.314000] ivtv0: Allocate DMA encoder PCM audio stream: 455 x 4608 buffers (2048KB total) [4294699.314000] ivtv0: Create encoder radio stream [4294699.314000] tuner: type set to 68 (Samsung TCPN 2121P30A) by ivtv i2c driver #0 [4294699.519000] ivtv0: Initialized WinTV PVR 500 (unit #1), card #0 [4294699.519000] ivtv: ====================== NEXT CARD ====================== [4294699.519000] ivtv1: Autodetected WinTV PVR 150 card (cx23416 based) [4294699.519000] ACPI: PCI Interrupt 0000:03:09.0[A] -> GSI 20 (level, low) -> IRQ 20 [4294699.519000] ivtv1: Unreasonably low latency timer, setting to 64 (was 32) [4294699.563000] tveeprom: Second (radio) tuner idx 101 [4294699.563000] tveeprom: ivtv version [4294699.563000] tveeprom: Hauppauge: model = 23552, rev = E587, serial# = 8362710 [4294699.563000] tveeprom: tuner = Samsung TCPN 2121P30A (idx = 87, type = 68) [4294699.563000] tveeprom: tuner fmt = NTSC(M) (eeprom = 0x08, v4l2 = 0x00001000) [4294699.563000] tveeprom: audio processor = CX25843 (type = 25) [4294699.563000] tveeprom: decoder processor = CX25843 (type = 1e) [4294699.563000] ivtv1: i2c attach to card #1 ok [client=tveeprom, addr=50] [4294699.575000] tuner (ivtv): chip found at addr 0xc2 i2c-bus ivtv i2c driver #1 [4294699.575000] ivtv1: i2c attach to card #1 ok [client=(tuner unset), addr=61] [4294699.737000] cx25840 1-0044: ivtv driver [4294699.737000] cx25840 1-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #1)[4294702.774000] cx25840 1-0044: loaded v4l-cx25840.fw firmware (14264 bytes)[4294702.834000] ivtv1: i2c attach to card #1 ok [client=cx25840, addr=44] [4294702.835000] wm8775 1-001b: ivtv driver [4294702.835000] wm8775 1-001b: chip found @ 0x36 (ivtv i2c driver #1) [4294702.843000] ivtv1: i2c attach to card #1 ok [client=wm8775, addr=1b] [4294702.879000] ivtv1: This is the first unit of a PVR500 [4294703.552000] ivtv1: loaded v4l-cx2341x-enc.fw firmware (262144 bytes) [4294703.762000] ivtv1: Encoder revision: 0x02050032 [4294703.763000] ivtv1: Allocate DMA encoder MPEG stream: 128 x 32768 buffers (4096KB total) [4294703.763000] ivtv1: Allocate DMA encoder YUV stream: 194 x 10800 buffers (2048KB total) [4294703.764000] ivtv1: Allocate DMA encoder VBI stream: 120 x 17472 buffers (2048KB total) [4294703.765000] ivtv1: Allocate DMA encoder PCM audio stream: 455 x 4608 buffers (2048KB total) [4294703.766000] ivtv1: Create encoder radio stream [4294703.766000] tuner: type set to 68 (Samsung TCPN 2121P30A) by ivtv i2c driver #1 [4294703.970000] ivtv1: Initialized WinTV PVR 500 (unit #1), card #1 [4294703.970000] ivtv: ==================== END INIT IVTV ==================== __________________________________________________ Do You Yahoo!? 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