@bazmonkey that's excellent, thanks for the detailed insight, I really appreciate it. In many ways the Pi is the gift that keeps on giving - complex enough to do amazing things, but logical enough that it's possible to learn how that complexity is manifested.

@Ostego editing the file is not recommended. Better to symlink or mount the USB over existing from location.

@Concat said in Sound amp hum :(:

I just meant that it didnt get rid of the audio hum. There was still a ground issue even when using usb audio.

Only thing that solved it was grounding the amp. I actually tried two different amps and both had the loud hum. Ground signal must have been going through the audio cables.

Ah, we are talking of differing hums, then. I'm speaking of the terrible noise you get when you--say--plug headphones straight into the Pi. It absolutely disappears with a USB sound card.

@camo200sx: I suspect based off your last comment that you are hearing the crap I am. It might be worth trying a USB sound card. $6 might save a lot of hassle.

Could be that file ownership/permissions on your home directory got hosed. Run the following command to ensure the 'pi' user owns everything in his home directory:

sudo chown -R pi:pi /home/pi

If you still have issues, you may have to fix directory permissions under /home/pi with the following command:

find /home/pi -type d -exec chmod u+rwx {} \;

EDIT: Changed find command slightly, first cut could have made some things like .ssh/ become too permissive and hinder some functionality (i.e. sshd will refuse to honor .ssh/authorized_keys if permissions are too open).

I should use the title to describe your problem.
Maybe you should edit it...

Good news! I tried an alternate SD card install and it worked. I'll be more mindful before i make changes to the configs from now on. Thanks everyone for your help!

have you managed to solve this? i got my ps3 working like a charm except for the D-Pad, it won't work at all, only analog pad :(

error log -

terminate called after throwing an instance of 'std::logic_error'
what(): basic_string::_S_construct null not valid
/opt/retropie/emulators/reicast/bin/reicast.sh: line 76: 1076 Aborted

Did you try first using the sixad driver? I don't think the controller works as a generic bluetooth device. Are the controllers the only bluetooth devices you are using?

I would 1) re-install from scratch, 2) pair any other bluetooth devices you want to use, 3) install sixad from retropie-setup.

After that, simply plugging in the controller once should register it with bluetooth. You never have to actually pair it yourself. After the initial plug-in, hitting the PS button should pair it up, and from there Emulationstation should detect it with no issues.

I'm only suggesting #1 (reinstalling) because I haven't a clue what that message means, and not knowing what you tried, it's probably easier to re-install than attempt to backtrack. #2 is necessary because sixad disables something that bluetoothctl needs (some kernel module I think, I forget), and you won't be able to pair new devices after that.

Once you get this working, before you tinker with anything else, I'd highly recommend saving an image of your card, so that the worst-case scenario is simply backtracking to a working system, not a brand-new installation.

I run it on my ubuntu setup myself, and have not seen any problems when updating - so I would be interested in knowing what went wrong.

@kraken0667 mc

Unfortunately it seems this controllers latest firmware still requires the hack on. If you had configured joypad with it off you would have lost controls in retroarch also.

@darkchild1336
I'm running into the same issue and haven't been able to resolve anything. Did you find any answers on your end?

Thanks I ended up using that ROM, which is the Rev 1 set. It checks out against your MD5 checksum. I was using Alex Kidd in Miracle World (USA, Europe).sms from No-Intro initially.

Now that is sorted, does anyone know anytime about playing the BIOS version of the game?

FYI, any Windows 8\10 users who want to calculate checksum from the command line, use this:
C:\WINDOWS\system32>certutil -hashfile c:\rompath\rom.ext MD5

Thanks again bobcat987

@BuZz That did the trick, after I turned the 8bitdo hack mode to on in the Bluetooth menu. I thought I already had it switched to on. Thanks for the help.

@obsidianspider I'm sure it will come in handy later. I'll order one too.

@wmcclelion Cool, I'll fiddle around some more with the gamepad then. Thanks. :)

@bkay Some discussion on the topic here as well:
https://retropie.org.uk/forum/topic/140/how-to-use-overclock-and-mupen-core-options-to-significantly-increase-64-game-playability-quality-and-stability/

Samsung card is good one. I got the 64gig version of that and it's been perfect. I'm referring to the GOLD Evo