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lithium3141
Tux's lil' helper
Joined: 22 Dec 2004
Posts: 100
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 Posted: Sun Oct 22, 2006 2:27 am Post subject: pcHDTV 5500 with MythTV - cannot enter livetv mode |
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I recently purchased a pcHDTV 5500 card and am now attempting to set it up to work with MythTV 0.20_p11444 in order to record and play hi-def video. However, I can't seem to get Myth to work nicely with the card - I'm unsuccessful when scanning for channels with nearly all combinations of settings (NTSC/ATSC, 8VSB/QAM256/QAM64, Cable/HRC/IRC/Broadcast). Myth also seems to have trouble recognizing the card's analog inputs. In mythtv-setup, I have the card configured as a DVB DTV capture card v3.x, and the correct frontend ID shows up; however, in Analog Options, the card's input is shown to be /dev/v4l/video0 with an accompanying "cannot probe for inputs" error. I'm running kernel 2.6.18-gentoo-r1 with support for the card compiled as a module; I load the module (cx88-dvb) on startup.
The relevant parts of dmesg:
| Code: | Linux video capture interface: v2.00
cx2388x dvb driver version 0.0.6 loaded
CORE cx88[0]: subsystem: 7063:5500, board: pcHDTV HD5500 HDTV [card=47,autodetected]
TV tuner 64 at 0x1fe, Radio tuner -1 at 0x1fe
ACPI: PCI Interrupt 0000:04:01.2[A] -> GSI 17 (level, low) -> IRQ 177
cx88[0]/2: found at 0000:04:01.2, rev: 5, irq: 177, latency: 64, mmio: 0xda000000
cx88[0]/2: cx2388x based dvb card
DVB: registering new adapter (cx88[0]).
DVB: registering frontend 0 (LG Electronics LGDT3303 VSB/QAM Frontend)...
ivtv: ==================== START INIT IVTV ====================
ivtv: version 0.8.0 (tagged release) loading
ivtv: Linux version: 2.6.18-gentoo-r1 SMP preempt mod_unload PENTIUM4 gcc-4.1
ivtv: In case of problems please include the debug info between
ivtv: the START INIT IVTV and END INIT IVTV lines, along with
ivtv: any module options, when mailing the ivtv-users mailinglist.
ivtv: ==================== END INIT IVTV ==================== |
Another oddity you will notice is the loading of ivtv. Why does that happen? I had another card present, a Hauppauge PVR-150; however, I removed it in order to add the 5500. I had hoped to have both of them working side-by-side at some point in the future, but that's another issue.
lspci -v:
| Code: | 04:00.0 Multimedia audio controller: Cirrus Logic Crystal CS4281 PCI Audio (rev 01)
Flags: bus master, medium devsel, latency 64, IRQ 169
Memory at dcdef000 (32-bit, non-prefetchable) [size=4K]
Memory at dcdf0000 (32-bit, non-prefetchable) [size=64K]
Capabilities: [40] Power Management version 2
04:01.0 Multimedia video controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 64, IRQ 10
Memory at d8000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [44] Vital Product Data
Capabilities: [4c] Power Management version 2
04:01.1 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [Audio Port] (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 64, IRQ 10
Memory at d9000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
04:01.2 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [MPEG Port] (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 64, IRQ 177
Memory at da000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2
04:01.4 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [IR Port] (rev 05)
Subsystem: pcHDTV Unknown device 5500
Flags: bus master, medium devsel, latency 64, IRQ 10
Memory at db000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [4c] Power Management version 2 |
Any reason why this card shouldn't be working properly in Myth? How might I go about getting it to work properly? I've read a lot of the relevant documentation on both the gentoo and mythtv wikis, but it seems mostly to be tailored for the 3000, and a lot of the instructions don't apply to me for one reason or another. I've followed what I could (modularizing the driver instead of compiling it in, looking for channels with dvbscan rather than Myth), but it doesn't seem to have done me much good. Any help is greatly appreciated. |
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RoundsToZero
Guru
Joined: 17 Nov 2003
Posts: 478
Location: New York, NY
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| Posted: Sun Oct 22, 2006 5:32 pm Post subject: |
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Do you have the firmware installed? It's available from the download page at pchdtv.com. I think it might also be in portage, but I've been using the one from pchdtv.com. HD-3000 here, though.
EDIT: For analog support you need the cx8800 module loaded as well (for the HD-3000 at least). Then you should be able to configure the analog portion of the card. |
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lithium3141
Tux's lil' helper
Joined: 22 Dec 2004
Posts: 100
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| Posted: Sun Oct 22, 2006 7:47 pm Post subject: |
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For the 5500, no firmware is required. I did, however, find your analog module hint helpful - the analog section in mythtv-setup now shows the proper card and device. For reference, my /etc/modules.autoload.d/kernel-2.6 looks like this:
dmesg|grep -i cx:
| Code: | cx2388x v4l2 driver version 0.0.6 loaded
CORE cx88[0]: subsystem: 7063:5500, board: pcHDTV HD5500 HDTV [card=47,autodetected]
cx88[0]/0: found at 0000:04:01.0, rev: 5, irq: 177, latency: 64, mmio: 0xd8000000
tuner 0-0043: chip found @ 0x86 (cx88[0])
tuner 0-0061: chip found @ 0xc2 (cx88[0])
cx88[0]/0: registered device video0 [v4l2]
cx88[0]/0: registered device vbi0
cx2388x dvb driver version 0.0.6 loaded
cx88[0]/2: found at 0000:04:01.2, rev: 5, irq: 177, latency: 64, mmio: 0xda000000
cx88[0]/2: cx2388x based dvb card
DVB: registering new adapter (cx88[0]). |
My only issue now is finding the right channels to tune. I'm a Comcast cable customer - we have analog channels, but there is some HD content on subchannels (5.1, 7.1, etc.) - in IL. I've had the most luck scanning with Cable IRC, QAM-256 modulation. I get four or five main channels, each with at least five subchannels. However, the channel number doesn't seem to match up with the content of the channel - my analog channel 12 (the Channel Guide channel) appears as Cable IRC channel 78#3. Is there a better way to scan channels? I've also tried dvbscan, with the same results. Thanks. |
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RoundsToZero
Guru
Joined: 17 Nov 2003
Posts: 478
Location: New York, NY
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| Posted: Tue Oct 24, 2006 8:13 pm Post subject: |
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| Hmm, I've never had to use Cable IRC, just plain Cable. I haven't had Comcast for about a year now though so maybe it's changed. I remember at the time the Myth scan didn't work at all becuase Comcast didn't put the station ID's (the WXXX or KXXX) on the stream. Now it might work. At the time I just used dvbscan and that was able to find everything--including the "locked" pay-per-view channels! |
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lithium3141
Tux's lil' helper
Joined: 22 Dec 2004
Posts: 100
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| Posted: Fri Oct 27, 2006 8:43 pm Post subject: |
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| Would you happen to remember ATSC/NTSC and 8VSB/QAM64/QAM256? Thanks. |
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lithium3141
Tux's lil' helper
Joined: 22 Dec 2004
Posts: 100
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| Posted: Sun Oct 29, 2006 12:26 am Post subject: |
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Running these commands:
| Code: | ./dvbscan atsc/us-ATSC-center-frequencies-8VSB
./dvbscan atsc/us-Cable-EIA-542-HRC-center-frequencies-QAM256
./dvbscan atsc/us-Cable-EIA-542-IRC-center_frequencies-QAM256
./dvbscan atsc/us-Cable-HRC-center-frequencies-QAM256
./dvbscan atsc/us-Cable-IRC-center-frequencies-QAM256
./dvbscan atsc/us-Cable-Standard-center-frequencies-QAM256
./dvbscan atsc/us-NTSC-center-frequencies-8VSB
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I get this (abbreviated for clarity) output, substituting the proper filenames in the first line, but always with the same end result:
| Code: | scanning ./dvbscan atsc/us-Cable-Standard-center-frequencies-QAM256
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
...
ERROR: initial tuning failed
dumping lists (0 services)
Done. |
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