[mythtv-users] Twinhan problems

Mikael Bergman mb at abc.se
Tue Jan 23 07:49:35 UTC 2007


Ok, first post to the list.

I'm setting up my first Myth-system and have run into tons of problems. I'm
now trying to sort it all out though I'm not sure I'm attacking them in the
right order. Here goes...

Ubuntu 6.10 with Myth 0.20 from the distro. Backend up, frontend up. Added
first card, a TwinhanDTV Ter-CI Split (as I'm in Sweden trying to use DVB-T
with Boxer). Scanned for channels and found all channels ok. Here starts my
problems. I can only get a lock on a few channels (SVT1, SVT2 and SVT24).
These are free-to-air but not the only free-to-air channels. I figure I have
a bad signal (strength and/or qualtity). This seems to be confirmed since
same card in WinXP also gives me lock-problems. But... then I borrow a
FireDTV-card from a friend and it works perfectly (again in Windows, no
linux drivers yet). Hmm, I figure my Twinhan card is bad and borrows another
card from my friend - an identical Twinhan-card. This card gives me only
lock on another channel (TV4) and when I insert my first card again that
card can't lock on any channel.

Sigh. Where to start?

dmesg:
[17179592.884000] bttv: driver version 0.9.16 loaded
[17179592.884000] bttv: using 8 buffers with 2080k (520 pages) each for
capture
[17179592.884000] bttv: Bt8xx card found (0).
[17179592.884000] ACPI: PCI Interrupt 0000:02:07.0[A] -> Link [LNKB] -> GSI
19 (level, low) -> IRQ 201
[17179592.884000] bttv0: Bt878 (rev 17) at 0000:02:07.0, irq: 201, latency:
64, mmio: 0xea7fe000
[17179592.884000 ] bttv0: detected: Twinhan VisionPlus DVB [card=113], PCI
subsystem ID is 1822:0001
[17179592.884000] bttv0: using: Twinhan DST + clones [card=113,autodetected]
[17179592.884000] bttv0: gpio: en=00000000, out=00000000 in=00f783fd [init]
[17179592.884000] bttv0: using tuner=4
[17179592.924000] bttv0: add subdevice "dvb0"
[17179592.924000] bttv: Bt8xx card found (1).
[17179592.924000] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 18
[17179592.924000] ACPI: PCI Interrupt 0000:02:09.0[A] -> Link [LNKD] -> GSI
18 (level, low) -> IRQ 209
[17179592.924000] bttv1: Bt878 (rev 17) at 0000:02:09.0, irq: 209, latency:
64, mmio: 0xea7fc000
[17179592.924000 ] bttv1: detected: Twinhan VisionPlus DVB [card=113], PCI
subsystem ID is 1822:0001
[17179592.924000] bttv1: using: Twinhan DST + clones [card=113,autodetected]
[17179592.924000] bttv1: gpio: en=00000000, out=00000000 in=00f500fd [init]
[17179592.924000] bttv1: using tuner=4
[17179592.932000] bttv1: add subdevice "dvb1"
[17179592.964000] agpgart: Detected AGP bridge 0
[17179592.964000] agpgart: Setting up Nforce3 AGP.
[17179592.968000 ] agpgart: AGP aperture is 128M @ 0xf0000000
[17179592.988000] nvidia: module license 'NVIDIA' taints kernel.
[17179592.992000] ACPI: PCI Interrupt Link [LNKE] enabled at IRQ 17
[17179592.992000] ACPI: PCI Interrupt 0000:01: 00.0[A] -> Link [LNKE] -> GSI
17 (level, low) -> IRQ 217
[17179592.992000] NVRM: loading NVIDIA Linux x86 Kernel Module  1.0-8776
Mon Oct 16 21:56:04 PDT 2006
[17179593.348000] bt878: AUDIO driver version 0.0.0 loaded
[17179593.348000] bt878: Bt878 AUDIO function found (0).
[17179593.348000] ACPI: PCI Interrupt 0000:02:07.1[A] -> Link [LNKB] -> GSI
19 (level, low) -> IRQ 201
[17179593.348000] bt878_probe: card id=[0x11822],[ Twinhan VisionPlus DVB ]
has DVB functions.
[17179593.348000] bt878(0): Bt878 (rev 17) at 02:07.1, irq: 201, latency:
64, memory: 0xea7ff000
[17179593.348000] bt878: Bt878 AUDIO function found (1).
[17179593.348000] ACPI: PCI Interrupt 0000:02:09.1[A] -> Link [LNKD] -> GSI
18 (level, low) -> IRQ 209
[17179593.348000] bt878_probe: card id=[0x11822],[ Twinhan VisionPlus DVB ]
has DVB functions.
[17179593.348000] bt878(1): Bt878 (rev 17) at 02:09.1, irq: 209, latency:
64, memory: 0xea7fd000
[17179593.404000] NET: Registered protocol family 17
[17179593.416000] ACPI: PCI Interrupt Link [LAUI] enabled at IRQ 20
[17179593.416000] ACPI: PCI Interrupt 0000:00:06.0[A] -> Link [LAUI] -> GSI
20 (level, low) -> IRQ 193
[17179593.416000] PCI: Setting latency timer of device 0000:00: 06.0 to 64
[17179593.524000] ts: Compaq touchscreen protocol output
[17179593.736000] intel8x0_measure_ac97_clock: measured 58628 usecs
[17179593.736000] intel8x0: clocking to 47033
[17179593.840000] lp0: using parport0 (interrupt-driven).
[17179593.876000] ieee1394: sbp2: Driver forced to serialize I/O
(serialize_io=1)
[17179593.876000] ieee1394: sbp2: Try serialize_io=0 for better performance
[17179594.048000] DVB: registering new adapter (bttv0).
[17179594.336000] dst_get_device_id: Recognise [DTT-CI]
[17179594.336000]
[17179594.336000] DST type flags : 0x1 newtuner 0x2 ts204 0x10 firmware
version = 2
[17179594.396000] dst_get_mac: MAC Address=[00:08:ca:14:0f:00]
[17179594.444000] dst_ca_attach: registering DST-CA device
[17179594.444000] DVB: registering frontend 0 (DST DVB-T)...
[17179594.448000] DVB: registering new adapter (bttv1).
[17179594.488000] NET: Registered protocol family 10
[17179594.488000] lo: Disabled Privacy Extensions
[17179594.488000] IPv6 over IPv4 tunneling driver
[17179594.832000] dst_probe: unknown device.
[17179594.832000] frontend_init: Could not find a Twinhan DST.
[17179594.832000] dvb-bt8xx: A frontend driver was not found for device
109e/0878 subsystem 1822/0001

The last three rows worries me somewhat.

I also get *lots* of these in mythbackend.log:
[...]
2007-01-22 20:07: 54.704 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:54.748 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:54.796 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:54.844 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:54.888 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:54.928 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:54.972 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:55.012 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:55.060 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:55.192 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
2007-01-22 20:07:55.252 DVB#0 CA Error: CAM supports no CA systems! (Slot
#0)
[...]

I need help badly! Anyone care to help a n00b? :-)

/Mikael

-- 
Mikael Bergman
http://mikaelbergman.se
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