@mitu Thanks for the suggestion. Tried that already previously but it didn't work, but I will give it another go. I hope the new HDMI cable will fix the issue.

There is some configuration that can be done by modifying the ALSA configuration file ($HOME/.asoundrc), but looks complicated and there's no 'one-size-fits-all' solution (depends on the devices present on the system).

You could try installing PulseAudio and configure the module-combine for simultaneous output.

@mitu Thank you for your ongoing support to the community, much appreciated. I just learned that you do not support 3rd party images, which I fully understand. And honestly I have not created this setup on my own, as my knowledge is very limited. However, when I try a fresh install, everything works as you described.

Those solutions are not good enough for my project.
I simply want to read two buttons, if Button 1 is pressed, the PI should switch the Display Rotation to 0, if Button 2 is pressed, it should be 180degree.

Not SplitScreen, just rotating.

There must be a simple Solution with Python i think.

Any ideas?

So I figured it out.

I should have set Retroarch.cfg to rotate 270 degrees.

I feel silly, but thanks in advance.

@buffyp00h said in Audio stutter in some SNES games on surround receiver:

All have the same problem on soundbar systems (and likely also on surround receivers).

I just don't get why these particular games generate hdmi sound that gets wrecked by so many setups, one would think there was a way to fix this at the source - the generation of sound on the pi/other device.

Just my 0.02 here, the world of modern TVs and home theater/surround sound devices is needlessly complicated for these simple old tasks we are trying to recreate here with simple digital signals (ironically that are emulations of old analog signals).

What I would try to see if it helps:
Many TVs have a "game mode" that is intended to reduce or eliminate "signal processing" to enable a more pure, delay free signal and timings. Many surround sound receivers have something similar, although it is usually called Pure Audio or Direct Sound mode. You might see if your receiver has this option and try it to see if it eliminates audio hitches.

For what it's worth, I have an Onkyo receiver at home and even with modern consoles I have noticed that something in the HDMI convergence where all video inputs are routed to a single HDMI output to the TV will cause a 'gap' in sounds sometimes. (After a dead silence of any kind, the first sound made is either dropped entirely or gets cut so I only hear part of it before normal audio resumes. Sort of like the audio stream has to buffer up before it becomes stable again.)

EDIT: Hit the submit button too soon and wasn't done typing.

@mitu

Thank you Mitu, but for me, a power-user at best, thats going to be like looking for the proverbial needle. Before I spend hours trying to troubleshoot this Ill just save my roms and do a fresh install.

Thanks anyway and kind regards

Apologies.

Changing it to 1080p 50hz (am in the UK) and disabling overscan worked.

Thanks!

#uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

#uncomment this if your display has a black border of unused pixels visible
#and your display can output without overscan
disable_overscan=1

#uncomment the following to adjust overscan. Use positive numbers if console
#goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

#uncomment to force a console size. By default it will be display's size minus
#overscan.
#framebuffer_width=1280
#framebuffer_height=720

#uncomment if hdmi display is not detected and composite is being output
config_hdmi_boost=4
hdmi_safe=1
hdmi_force_hotplug=1
hdmi_drive=2

#uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=2
#hdmi_mode=9

#uncomment to increase signal to HDMI, if you have interference, blanking, or
#no display
#config_hdmi_boost=4

#uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

#Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

#Uncomment this to enable infrared communication.
#dtoverlay=gpio-ir,gpio_pin=17
#dtoverlay=gpio-ir-tx,gpio_pin=18

#Additional overlays and parameters are documented /boot/overlays/README

#Enable audio (loads snd_bcm2835)
dtparam=audio=on

[pi4]
#Enable DRM VC4 V3D driver on top of the dispmanx display stack
#dtoverlay=vc4-fkms-v3d
max_framebuffers=2

#flip screen 180 degrees
lcd_rotate=2

#disable touch screen
#ignore_lcd=1

#disable onboard bluetooth
dtoverlay=pi3-disable-bt

[all]
dtoverlay=vc4-kms-v3d
start_x=0
gpu_mem=128

Try editing /boot/config.txt with ignore_lcd=1
Then reboot. Your RPI should know show over HDMI instead of lcd

@hhromic interesting! i've added the info from this thread to the docs: https://github.com/RetroPie/RetroPie-Docs/pull/15

@mitu Oh Sorry!!
My english is very bad jaja.

So.. im gonna to try the scripts and when i have a switch im gonna try it connecting it to ha 5V and ground GPIO.

Thank you so much!

Have you tried the other HDMI port? That happened with me.

Thanks again.

I found how to fix it, in case anyone stumbles upon the same problem:

xset -display :0 dpms force on

enabled my hdmi monitor again.

Going to reinstall retropi again, see if it breaks again and if I can fix it like this again.

I checked the resolution of my RetroPie and found it's already 1080p. So I did nothing to the configuration.

I updated RetroPie and the sound came back.

It's so weired. I still don't know where the problem was and how the problem was solved.

But I can play games with sound anyway.
@lostless @MegaTimX

@pojr Cool, glad you got it! I meant to mention that one as well as I has tried it, but it didn't fix
the issue for me.