06-11-2019, 11:55 AM
(This post was last modified: 06-11-2019, 12:04 PM by GameBro Advance.)
(06-11-2019, 10:11 AM)Flavor Wrote: You said that you turned the software volume way down. Did you try turning it way up (90-100 in ALSA) as another data point?
This stuff is very difficult to track down, and part of that is because there's always (at least in my mind) the chance that you are more discerning than other users. Do you think there's a chance that what you are hearing would seem "normal" to most users?
Most people will be able to hear noise until the system initializes the audio. Once in game, this (at least to me) is gone.
So, I want to be sure that we're talking about some issue with the hardware that's out of the ordinary (and not that your ears are able to hear stuff that many people can't notice).
Having said all that, we did (well over a year ago) have some units that had a solder issue in the audio amplifier section. As far as manufacturing goes, this issue was resolved a long time ago, but I guess there's always a random chance that a capacitor is bad or that it didn't get soldered well. Would you want to post some photos of the circuit board around the volume wheel and headphone area?
I'll talk to my colleague a bit more about this, but we may need to get you some different hardware to test. Can you open a SUPPORT ticket at https://www.freeplaytech.com/contact/, so we could try to get you some different hardware to test with?
Yes, I tried turning Alsa volume up to 90, and brought it down one point when the volume gauge turned red.
Also, today I reflashed my SD card to the latest image (the one from a few days ago) just to rule out any issues there. I've tried a couple of different Micro SD cards.
I understand what you mean - I definitely don’t have picky audiophile ears though. I’ve noticed that it happens when data is being written to or read from the SD card. I recorded a video of the chirping happening loudly and continuously while importing files via a plugged in USB drive. I’ll try to upload that video somewhere when I get a chance. I also noticed that it happened when I was writing files to it over SSH. My best guess is that the interference comes from I/O activity somewhere on the board.
It does seem to decrease in intensity when I’m playing a game, but I’m guessing that’s just due to decreased I/O activity. It definitely happens when the system is basically idle though (for example, I paused a game which has no audio when paused, and I could hear the chirping sounds then).
I’ll definitely open a ticket and get those photos to you as well.