(In reply to John Frei from comment #10)
> Wow, thank you for this quick reply!
> 
> Here's what i've done now. Please correct me, if I've done something wrong.
> 
> //Removing the old ucode.
> -rm /usr/lib/firmware/radeon/hawaii*
> -rm /usr/lib/firmware/radeon/HAWAII*

Are you sure that is the correct directory?  Most distros look for the firmware
in /lib/firmware/radeon/