First bug report ever and not a dev/power user, sorry if it's not clean enough.
I realised that with my intel HD 5600 (I got an i7 5700HQ on my laptop), everybody works fine, except 3D. As long as I run any kind of 3D game, it freezes the whole system (no access to tty, no possibility to switch virtual desktop, no alt-tab, no mouse moving, nothing, I tried waiting 15 minutes in case it was just really slow). For example, Rocket League crashes on splash screen, and pillars of eternity crashes in less than 3 minutes in game. The driver installed by Solus was i915.
step to reproduce the bug :
- Launch any 3D game
- The system freezes.