[Intel-gfx] 4.3.3 / skylake / dual graphics: multiple CSR errors at boot from i915 driver

[Marc MERLIN]

On Tue, Feb 16, 2016 at 05:10:01PM +0100, Daniel Vetter wrote:
> > This allowed things to work, but it's not exactly an obvious step if you
> > have i915 built in the kernel.
> > On the plus side, my system would hang 1mn while i915 was trying to do
> > things without its firmware, but the boot continued and X was usable without
> > the firmware loaded.
> > 
> > Actually outside of the 1mn hang at boot, I'm not sure if my system is
> > running X better with the firmware than without :)
> 
> dmc is required for some power saving stuff, not for rendering or basic
> display functionality. And the problem with not having it really is in
> testing all possible combinations, like you've just found out.

Understood. At least I wanted to report that the driver is still usable
without it, so that's good news (i.e. much better than your display not
working if you're missing binary firmware that isn't being found or built in
by the kernel).

So, even if it's not intentional, thanks for having the driver still work
well enough without it :)

Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
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Home page: http://marc.merlins.org/