On Tue, 2008-06-24 at 08:12 -0300, [EMAIL PROTECTED] wrote: > well i tryed the lattest bleeding edge driver as of 8pm last night and it > does not fix the issue i still get the bad audio. below is the dmesg info > when the driver is loaded. > > Linux video capture interface: v2.00 > ivtv: Start initialization, version 1.3.0 > ivtv0: Initializing card #0 > ivtv0: Autodetected Hauppauge card (cx23416 based) > ACPI: PCI Interrupt 0000:05:09.0[A] -> Link [APC2] -> GSI 17 (level, low) > -> IRQ 17 > PCI: Enabling bus mastering for device 0000:05:09.0 > tveeprom 2-0050: Hauppauge model 26552, rev F0A3, serial# 10413145 > tveeprom 2-0050: tuner model is TCL MFNM05-4 (idx 103, type 43) > tveeprom 2-0050: TV standards NTSC(M) (eeprom 0x08) > tveeprom 2-0050: audio processor is CX25843 (idx 37) > tveeprom 2-0050: decoder processor is CX25843 (idx 30) > tveeprom 2-0050: has radio, has no IR receiver, has no IR transmitter > ivtv0: Autodetected Hauppauge WinTV PVR-150 > cx25840 2-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #0)
Misconfiguration or misdetection of the audio standard by the CX5843 chip is likely cause of audio problems, since it does demodulation, standard detection, dematrixing, digitization, and digital filtering of tuner SIF audio. (CX23416 encoding could also be a cause.) So let's use differential analysis on the cx28543 to see if we can find what's wrong. Ideally we'd like to get snapshots of data of the board with good audio and the board with tinny audio with as many of the inputs and conditions the same as is possible. 1. The first thing you want to look for differences in is the output of $ v4l2-ctl -d /dev/video0 --log-status 2. The second thing you want to look for differences in is the output of $ v4l2-dbg -d /dev/video0 -R type=i2cdrv,chip=cx25840 which produces a register dump of the cx25843's registers. (This syntax might be slightly wrong, as I don't have my PVR-150 in my machine right now) Somethings will be different that don't matter (e.g. the chip counts video scan lines that it has processed so these counters will be different), but hopefully something shows up that does matter. BTW, what corrective actions have you taken that are effective at getting rid of the tinny audio when it occurs? Regards, Andy > tuner 2-0043: chip found @ 0x86 (ivtv i2c driver #0) > tda9887 2-0043: creating new instance > tda9887 2-0043: tda988[5/6/7] found > tuner 2-0061: chip found @ 0xc2 (ivtv i2c driver #0) > wm8775 2-001b: chip found @ 0x36 (ivtv i2c driver #0) > tuner-simple 2-0061: creating new instance > tuner-simple 2-0061: type set to 43 (Philips NTSC MK3 (FM1236MK3 or > FM1236/F)) > cx25840 2-0044: loaded v4l-cx25840.fw firmware (16382 bytes) > ivtv0: Registered device video0 for encoder MPG (4096 kB) > ivtv0: Registered device video32 for encoder YUV (2048 kB) > ivtv0: Registered device vbi0 for encoder VBI (1024 kB) > ivtv0: Registered device video24 for encoder PCM (320 kB) > ivtv0: Registered device radio0 for encoder radio > ivtv0: Initialized card #0: Hauppauge WinTV PVR-150 > ivtv: End initialization > ivtv0: Loaded v4l-cx2341x-enc.fw firmware (376836 bytes) > ivtv0: Encoder revision: 0x02060039 > > also as a side note, i did change system boards for other reasons so its a > different brand/model but simmiler system board. > > Thanks for any help > Kevin > > > Hi, > > well i have had my system online, and i finaly have time to get back to > > trying to fix this, i have bin using the set audio input fix as noted > > before and it still gives me the bad audio, altho not nearly as often, i > > did try the bleeding edge drivers with no success still same issue and no > > changes, although that was a month ago, i will try again with the current > > bleeding edge driver and see if it works, other wise in my free time i can > > work with anyone who knows more about this to try and debug this since it > > seems like its an unresoveled issue that some people are having and just > > arnt speaking up. i currently am traviling, however i have a second slave > > mythbox that does tuning, since i have bin working on fixing it on the > > master im not sure if the slave is doing the same, if it is then for any > > dev that would like to examin the issue with root access give me a week or > > so, and ill be able to secure remote access to the system. > > > > if anyone has found a fix or work around already and i didnt see the > > message please let me know. > > > > thanks > > > > Kevin > > > > > >> well im not sure now, i have just had a major systemboard failure, i > >> have yet to fully test what has failed but the entire usb system has > >> failed, so it may have bin a bad system board causing the issues for me, > >> ill know for sure when i get a new replacement. > >> > >> Kevin > >> > >> Scott Harris wrote: > >>> > >>> Hans Verkuil wrote: > >>> > >>> > >>>> Hi Mike, > >>>> > >>>> The tinny audio problem plagued a lot of people in the past, but I > >>>> haven't heard about this for quite some time now. Please make sure you > >>>> are using the latest version (preferably the 'bleeding edge' code from > >>>> http://www.ivtvdriver.org/index.php/Download#Bleeding_Edge_driver). > >>>> > >>>> It seems that this problem only hits NTSC cards and it seems to be > >>>> related to some interaction between the audio chip and the cx23416. > >>>> After I made some changes in the way this is handled the problem > >>>> disappeared, although I never quite understood what was going on > >>>> internally. And I think that in one or two cases it was actually a bad > >>>> card, so I wonder if you could get hold of another PVR500 to test > >>>> with. > >>>> > >>>> Regards, > >>>> > >>>> Hans > >>>> > >>> > >>> I know it doesn't help throwing in the "me too" emails, but I've never > >>> been able to shake this problem from a pvr-250. It happens about 85% > >>> of the time. > >>> > >>> I just run this from cron once a minute to fix it. > >>> /usr/bin/v4l2-ctl -d /dev/video1 --set-audio-input=1 > >>> > >>> Scott > >>> > >>> > >>> Linux mythtv 2.6.24.5-85.fc8 #1 SMP Sat Apr 19 11:18:09 EDT 2008 x86_64 > >>> x86_64 x86_64 GNU/Linux > >>> > >>> > >>> ivtv-kmdl-2.6.24.5-85.fc8-1.0.3-136.fc8 > >>> ivtv_xdriver-1.0.0-9.fc8 > >>> ivtv-firmware-20070217-17 > >>> ivtv-1.0.3-136.fc8 > >>> perl-Video-ivtv-0.13-8.fc8 > >>> > >>> _______________________________________________ > >>> ivtv-users mailing list > >>> [email protected] > >>> http://ivtvdriver.org/mailman/listinfo/ivtv-users > >>> > >> > >> _______________________________________________ > >> ivtv-users mailing list > >> [email protected] > >> http://ivtvdriver.org/mailman/listinfo/ivtv-users > >> > >> > > > > > > > > _______________________________________________ > > ivtv-users mailing list > > [email protected] > > http://ivtvdriver.org/mailman/listinfo/ivtv-users > > > > > > > > _______________________________________________ > ivtv-users mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-users > _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
