Hi!
I have another episode in the saa7134 sound odyssee:
Some days ago after sound had been working just fine (apart from the
soft high pitch background sound), without any software/hardware
changes now I experience the following:
Sound is just a very loud continous high pitch beep whose frequency
depends on the tuned channel. No real sound audible.
In the logs what I find suspicious is:
When it worked:
Sep 18 10:13:28 bird kernel: tuner: tv freq set to 175.25
Sep 18 10:13:28 bird kernel: tuner: tv 0x0d 0x63 0x8e 0x90
Sep 18 10:13:29 bird kernel: saa7134[0]/video: DCSDT: found PAL
Sep 18 10:13:29 bird kernel: saa7134[0]/audio: tvaudio thread scan start [1]
Sep 18 10:13:29 bird kernel: saa7134[0]/video: DCSDT: found PAL
Sep 18 10:13:29 bird kernel: saa7134[0]/audio: tvaudio thread scan start [2]
Sep 18 10:13:29 bird kernel: saa7134[0]/audio: scanning 5.500 MHz => dc is 26001 [-11729/14272]
Sep 18 10:13:30 bird kernel: saa7134[0]/audio: scanning 6.000 MHz => dc is 6140 [2567/-3573]
Sep 18 10:13:30 bird kernel: saa7134[0]/audio: scanning 6.500 MHz => dc is 480 [382/-98]
Sep 18 10:13:30 bird kernel: saa7134[0]/audio: found PAL-BGHI main sound carrier @ 5.500 MHz
!!!!!!!!!
Sep 18 10:13:30 bird kernel: saa7134[0]/audio: ctl_mute=0 automute=0 input=Television => mute=0 input=Television
Sep 18 10:13:30 bird kernel: saa7134[0]/audio: tvaudio_setmode: trying PAL-B/G FM-stereo [5.500/5.742 MHz]
Sep 18 10:13:31 bird kernel: saa7134[0]/audio: found audio subchannels: mono
Sep 18 10:13:31 bird kernel: saa7134[0]/audio: tvaudio_setmode: using PAL-B/G FM-stereo [5.500/5.742 MHz]
!!!!!!!!!!!!!!!!!
Sep 18 10:13:33 bird kernel: saa7134[0]/audio: found audio subchannels: mono stereo
Now:
Sep 25 00:29:24 bird kernel: tuner: tv freq set to 175.25
Sep 25 00:29:24 bird kernel: tuner: tv 0x0d 0x63 0x8e 0x90
Sep 25 00:29:24 bird kernel: saa7134[0]/video: DCSDT: found PAL
Sep 25 00:29:24 bird kernel: saa7134[0]/audio: tvaudio thread scan start [5]
Sep 25 00:29:24 bird kernel: saa7134[0]/video: DCSDT: found PAL
Sep 25 00:29:24 bird kernel: saa7134[0]/audio: tvaudio thread scan start [6]
Sep 25 00:29:25 bird kernel: saa7134[0]/audio: scanning 5.500 MHz => dc is 3190 [953/-2237]
Sep 25 00:29:26 bird kernel: saa7134[0]/audio: scanning 6.000 MHz => dc is 4691 [-62/-4753]
Sep 25 00:29:26 bird kernel: saa7134[0]/audio: scanning 6.500 MHz => dc is 2756 [-596/-3352]
Sep 25 00:29:26 bird kernel: saa7134[0]/audio: found PAL-BGHI main sound carrier @ 6.000 MHz
!!!!!!!!!
Sep 25 00:29:26 bird kernel: saa7134[0]/audio: tvaudio_setmode: trying PAL-I NICAM [6.000/6.552 MHz]
Sep 25 00:29:27 bird kernel: saa7134[0]/audio: tvaudio_setmode: using PAL-I NICAM [6.000/6.552 MHz]
!!!!!!!!!!!
That is: When it worked, the driver found a PAL-B/G FM-stereo signal
at 5.5 MHz. Now it means, it found a PAL-I NICAM signal at 6 MHz.
I don't really believe that the same station switched its signal type!
And that difference is systematic in every channel!
I even tried forcing FM-stereo by adding an audio mode to
saa7134-tvaudio.c for the 6 MHz carrier and I tried to force the
carrier to 5.5 MHz. Both methods did not bring back the sound.
I suspect the card is not fully initialized by the driver and some
random initialization upon startup decides upon working or non-working
sound. It's strange that the working-non-working-cycle is in the range
of several days/weeks...
By the way FM radio isn't working anymore, since that problem came
up...
Any suggestions?
Thanks for any comments!
Tilman
--
--==[ Tilman Vogel <Tilman.Vogel@xxxxxx>, ICQ 13064977 ]==--
