kernel 4.3 -> black console

[Alex Deucher]

On Tue, Nov 10, 2015 at 11:32 PM, Daniel Mota Leite
<daniel at motaleite.net> wrote:
> Hi
>         Since i upgrade from kernek 4.2.5 to 4.3 i notice that i have no
>         console, i get a black screen and the monitor flags no signal.
>
>         When the X is loaded, i get the normal X screen and everything
>         works. If i switch to the console using ctrl+alt+f1, again the
>         monitor enters in energy saving mode.
>
>         Going back to 4.2.5 everythings works fine.
>         I'm using slackware64-current on a A10 APU and mesa 11.0.4
>
>         Any way to fix/debug this, or i will have to bisect it?
>         should i restrict the bisect to drivers/gpu/drm/radeon path
>         or should use more paths

It sounds like you didn't compile fbcon into your kernel or if you
built it as a module, you didn't load it.

Alex