Strange problem with sound

[Isakku]

Simmilar to #1
I have a dual boot setup. Linux Mint Cinnamon 18.3 and Linux Mint KDE 18.3 Since the hardware is a HP Envy laptop with BeatsAudio, I have HDA jack retask installed and pins are remapped in both setups.
However
Pulseeffects was installed in both cases from my distro's software manager which for this app is a flatpak, not sure if that could have any influence.
Anyways. Sound works normally in the first case. In the second case (KDE), it doesn't work well.

Basically I get no sound if I enable any of the effects for any of the running apps (Amarok, VLC, etc.)
Pulseeffects shows the animation of the sound waves in it's interface, but the actual sound is nowhere to be found. The "Enable all applications" button doesn't seem to do anything. So, for me this is working like a complex mute button.

[wwmm]

You are probably using Pulseaudio 11. It has a few problems that only manifest in KDE. The only real solution to this is upgrading to Pulseaudio 12. If that is not possible you will have to unload the module module-device-manage before starting PulseEffects. Follow step 3 in the FAQ

[Isakku]

Pulseaudio 11?
Looking at package properties in Synaptics Package Manager the PulseAudio package version says:
1:8.0-0ubuntu3.10
Upgrading to Pulseaudio 12? Quite strange. So, maybe if I upgrade to Mint 19... but they don't ship KDE anymore, and I cant be sure if upgrading PulseAudio's version only will break anything (because to do that I think that would require a PPA)
SIGH
I guess I will have to install Mint 19 and install KDE on top of Cinnamon, I have already done that with Mint Cinnamon 18.3 and KDE works fine regardless of the people at the forums telling me "not to mix desktop environments".
Oh and I guess I have to test how PulseAudio runs on Mint Cinnamon 18.3 using KDE instead of Cinnamon.
EDIT
After testing I must say that PulseEffects no longer works in Mint Cinnamon 18.3 most probably since the moment I installed KDE. It doesn't work at all, not even if I start session with Cinnamon instead of KDE. It's the same problem as in Mint KDE, it became a mute button and nothing else.
So, if I were to switch from 18.3 to 19 or 19.1 this problem will go away? (I imagine a newer package base means an updated and upgraded Pulseaudio package, I hope they have updated it)

[wwmm]

Only now I saw your edit. Before doing something radical try the points 3,4 and 5 in our FAQ

[wwmm]

As far as I remember an upgrade to Pulseaudio 12 fixed this problem for all the users that had it

[mikhailnov]

So, maybe if I upgrade to Mint 19

Mint 19 (Ubuntu 18.04) has Pulseaudio 11, you will have to install either pulseaudio 12 only or both pulseeffects and pulseaudio from PPA https://github.com/wwmm/pulseeffects/wiki/Package-Repositories#debian--ubuntu

[wwmm]

inactive

[Isakku]

Since I prefer stability (I already had to mess with HDA jack retask because this laptop comes with Beats Audio, and I had already installed KDE on top of Cinnamon, it's a pity Mint makers left us KDE users stranded) , I guess I'm screwed until Ubuntu and Mint decide to upgrade to Pulseaudio 12, which I don't think will happen untill the next Ubuntu LTS release, I really doubt Mint 19.1 will do it if they haven't done it for Ubuntu 18.04.