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dstover1688 / mame4all-pi

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HDMI Sound problem #6

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
Around 50% of the roms ive tried play a high pitched constant noise when the 
rom boots.  Examples :
Roms ive tried with this HDMI problem - sf2 tmht aliens ghouls
Roms ive tried with no problem - simpsons outrun goldnaxe

This only happens over HDMI sound. Sound plays perfectly using analogue output.

Original issue reported on code.google.com by lord_cri...@yahoo.com on 8 Mar 2013 at 8:50

GoogleCodeExporter commented 8 years ago 
Try removing the pulseaudio drivers, they cause problems with ALSA and HDMI.

sudo apt-get --purge remove pulseaudio

Original comment by squid...@gmail.com on 9 Mar 2013 at 7:57

GoogleCodeExporter commented 8 years ago 
Checked for pulseaudio - its not installed.

Im using 2013-02-09-wheezy-raspbian on 512mb model B. fully upto date with 
apt-get. Will try this on a different hdmi-TV later to see if its related to 
the television im using.

Original comment by lord_cri...@yahoo.com on 12 Mar 2013 at 2:48

GoogleCodeExporter commented 8 years ago 
Ok ive tried this with a more upto date TV. Instead of the high pitched noise 
produced on a phillips TV, my sony tv gives no sound at all on those selected 
roms.

Interestingly ive found the same problem on 2 8bit computer emulators, in both 
cases the sound can be fixed by enabling "stereo" in the emulator, (eg 
fuse-zxspectrum - AY stereo seperation option). Looks like the problems with 
alsa or the pi.  Perhaps the roms in question are only outputting mono sound?

Original comment by lord_cri...@yahoo.com on 28 Mar 2013 at 7:26

GoogleCodeExporter commented 8 years ago 
Have you updated the kernel (using rpi-update)? If so go back to the 
2013-02-09-wheezy-raspbian image. You've updated MAME4ALL to the latest Pi 
Store version?
Those games will need an overclocked Pi to run properly also.

Original comment by squid123...@gmail.com on 28 Mar 2013 at 9:00

GoogleCodeExporter commented 8 years ago 
the new "test" version on the raspberrypi forums posted  Fri Apr 05 ( 
http://mame4all-pi.googlecode.com/git/mametest.zip ) has fixed my audio 
problems. Looks like the pi doesnt like hdmi-mono.  Thanks!

Original comment by lord_cri...@yahoo.com on 5 Apr 2013 at 11:52

GoogleCodeExporter commented 8 years ago 
Good. Seems some TVs don't like mono HDMI sound, my TV works fine though.

Original comment by squid...@gmail.com on 6 Apr 2013 at 4:58