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Driver installed, data missing: cx88[0]/2: cx8802_timeout
PostPosted: Wed Sep 13, 2006 3:54 pm Reply with quote
p9emo
 
Joined: 13 Sep 2006
Posts: 3




Hi,

I my drivers and tools are compiled (well, xine-dh doesn't, but first things first). I have signals, but can't get a picture or scan. Typical scan produces
Code:

$ dtvscan -c 30
dtvscan ver 1.0.4 - by Jack Kelliher (c) 2002,2005,2006
Attempting to open /dev/dtv
Opened FE:/dev/dvb/adapter0/frontend0 3
Opened DMX:/dev/dvb/adapter0/demux0 4
Opened DVR:/dev/dvb/adapter0/dvr0 5
channel = 30 VSB_8
Signal: 383
look for sync

And then it just hangs. The 383 is a bit worrying, but, as you see, there's a signal on channel 30.
Code:

$ dtvsignal 30
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 569000000 Hz
video pid 0x0021, audio pid 0x0024
dtvsignal ver 1.0.4 - by Jack Kelliher (c) 2002,2005,2006
channel = 30 freq = 569000000Hz
 30db       0%         25%         50%         75%        100%
Signal:     |     .     :     .     |     ._____:_____._____|
Signal: 084 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$



So clearly channel 30 has something going on. getatsc produces empty output.

Code:

$ getatsc 30
getatsc version 1.0.4 (c)2002-2006 pcHDTV Inc.
argc 2 argv[1] 30

Finally, what I do get is plenty of dmesg:
Code:

cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout
cx88[0]/2: cx8802_timeout



Pages of them. The driver seems to be installed OK:
Code:

/sbin/lsmod | grep cx
cx8800                 34828  0
cx88_dvb               17956  0
cx88_alsa              13576  0
cx8802                 13316  1 cx88_dvb
cx88xx                 62372  4 cx8800,cx88_dvb,cx88_alsa,cx8802
compat_ioctl32          1408  1 cx8800
ir_common              28548  1 cx88xx
tveeprom               14352  1 cx88xx
cx88_vp3054_i2c         4608  1 cx88_dvb
videodev               22784  2 cx8800,cx88xx
i2c_algo_bit            8905  2 cx88xx,cx88_vp3054_i2c
dvb_pll                14596  1 cx88_dvb
video_buf_dvb           6916  1 cx88_dvb
v4l1_compat            12292  2 cx8800,videodev
v4l2_common            22016  3 tuner,cx8800,videodev
btcx_risc               5000  4 cx8800,cx88_alsa,cx8802,cx88xx
video_buf              25860  6 cx8800,cx88_dvb,cx88_alsa,cx8802,cx88xx,video_buf_dvb
snd_pcm                83781  4 cx88_alsa,snd_cs46xx,snd_ac97_codec,snd_pcm_oss
i2c_core               22209  8 tuner,lgdt330x,cx88_dvb,cx88xx,tveeprom,i2c_algo_bit,dvb_pll,i2c_piix4
snd                    55237  11 cx88_alsa,snd_cs46xx,snd_rawmidi,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer


Could this be a hardware error? Finally

Code:

$ ./atscscan -o 30
atscscan V1.32 Copyright (C) 2006 Trent Piepho <xyzzy@speakeasy.org>
Linux DVB based ATSC OTA/Cable channel scanning tool
Using DVB adapter #0
Using OTA US Broadcast frequencies w/ 8-VSB
Tuning to channel 30 (569.0000 MHz): # LOCK Strength = 84.1%
Timeout waiting for data to arrive.
There is probably no station you can receive on this frequency.
Error getting table!
Unable to receive PAT, giving up on this channel

Where's the data? Thanks for any help you can give

r


Last edited by p9emo on Thu Sep 14, 2006 11:25 am; edited 1 time in total
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apic
PostPosted: Thu Sep 14, 2006 11:24 am Reply with quote
p9emo
 
Joined: 13 Sep 2006
Posts: 3




Hi all,

I guess this will turn into a monologue >)

The problem seems to be related to interrupts, since re-organizing the irq numbers in the bios definitely changes things: scanning now succeeds once in a while, but my audio is gone (for all applications). I'll try enabling apic and seeing if that will help. The hardware is an a20p thinkpad, for which apic is not supposed to cause lockups..... FC5 seems to disable apic by default.
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Defeat and Victory
PostPosted: Fri Sep 22, 2006 9:49 am Reply with quote
p9emo
 
Joined: 13 Sep 2006
Posts: 3




So, I gave up trying to get the 5500 to work on my a20p thinkpad and installed it onto the front-end system, a core duo system based on asus p5w-dh. I compiled the recently released 2.6.18 kernel and viola!, getatsc works great. I can play through ubuntu-repository xine and mplayer with pipes and fifos.

None of the dtv tools from pchdtv seem to work, though, and I can't get the linuxtv tools to work either. But getatsc is fine for now.

Incidentally, the E6300 /7600GS combo screams with around 40% cpu for 720p. XvMC worked out of the repository--the only thing I compiled was the pentium M/SMP kernel, which took 1/10th the time as on the a20p. Still would like to understand why the APIC is disabled on the a20p (its a laptop, so IBM decided to simplify the interrupt options and disable APIC?).

r
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Driver installed, data missing: cx88[0]/2: cx8802_timeout
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