Linux Mint HDMI Issue

[Cloudy Canadian]

I am new to Linux but just installed Linux Mint 19.2 onto my laptop, and made to sure check on the option to also install 3rd party drivers when I was doing so. I tried to update it and now seem to be running version 4.2.3 of Cinnamon and Linux Kernel 4.15.0-55-generic.
I am using a HP Pavilion dv7 notebook that has an AMD Radeon HD 5650/5750 / 6530M/6550M GPU.

My problem is that when I plug a HDMI cable into my TV it only works for about 30 seconds before loses signal. Then after another short amount of time it pops back up again. I have tried going to Driver Manager but the only option is allows me to apply is "bcmwl-kernel-source version 6.30.223.271+bdcom-0ubuntu4". (I also restarted the PC after applying, but still having the same problem.)

I have tried different HDMI cables, short and no adapters, and used to have no issues when the laptop ran Windows 7. The worst part is that it works for a moment but then keeps switching on its own between "both", "extended", "TV only", and "laptop only"... I don't want to have to install another whole OS just to solve this but I am really fed up. 

[Sauron]

Install the amd drivers and try again http://www.fit-pc.com/wiki/index.php/AMD:_Installing_Linux_Mint_19#Radeon_open-source_graphics_drivers

[Cloudy Canadian]

14 minutes ago, Sauron said:

Install the amd drivers and try again http://www.fit-pc.com/wiki/index.php/AMD:_Installing_Linux_Mint_19#Radeon_open-source_graphics_drivers

I don't mean to be a pain but how would I go about doing that? Thank you for your suggestion though, probably would solve my issue. 

[Sauron]

20 minutes ago, Cloudy Canadian said:

I don't mean to be a pain but how would I go about doing that? Thank you for your suggestion though, probably would solve my issue. 

I don't know what else to tell you other than link the exact commands you need to run, which I did if you want I can list them here

sudo apt update
sudo apt install vdpau-va-driver vdpauinfo mesa-vdpau-drivers libvdpau-va-gl1 xserver-xorg-video-amdgpu libdrm-amdgpu1
sudo cd /usr/lib/x86_64-linux-gnu/dri/
sudo ln -s vdpau_drv_video.so radeonsi_drv_video.so
sudo ln -s vdpau_drv_video.so r600_drv_video.so

 

[Cloudy Canadian]

I tried to use Ubuntu instead and the same thing is happening, it is automatically toggling to the other options... As if I am clicking Win+P by itself... 

[Cloudy Canadian]

Seems like it was fixed by going into Driver Manager and setting the GPU driver to "Do not use the device".