Re: Intel Haswell support - Any updates?

On Thu, 2015-09-17 at 11:24 -0400, Kris Moore wrote:
> On 09/17/2015 11:19, O. Hartmann wrote:
> > Am Thu, 17 Sep 2015 11:02:07 -0400
> > Kris Moore <kris_at_pcbsd.org> schrieb:
> > 
> > > On 09/17/2015 09:48, Matthias Apitz wrote:
> > > > El día Thursday, September 17, 2015 a las 10:41:43PM +0900,
> > > > Lundberg, Johannes
> > > > escribió:
> > > > 
> > > > > Same here. I would personally definitely buy new hardware
> > > > > from Intel if
> > > > > FreeBSD worked on it (not vesa...)
> > > > > ...
> > > > What dow you have against vesa? I run CURRENT on some Acer C720
> > > > Chromebooks with Haswell chipset in Vesa mode. And you will not
> > > > note it.
> > > > I have never ever had such a fast desktop (KDE4) before. I can
> > > > live fine
> > > > with Vesa until Haswell suport is there.
> > > > 
> > > > 	matthias
> > > BTW, have you tried the xf86-video-scfb driver? It works much
> > > better
> > > than vesa here. The only catch is you have to be booted UEFI with
> > > CSM
> > > disabled. Using it on my X1 Carbon, gets 3k resolution properly
> > > and
> > > everything. Thanks to Glen Barber for bringing that to my
> > > attention.
> > > 
> > Running that specific driver on several Lenovo HD4600 driven models
> > gives me headaches
> > and more. This software-framebuffer works - yes, on whatever
> > resolution you might wish,
> > but it consumes CPU time. That said, I recall that the display was
> > jumpy, slow and
> > unresponsive when used under heavy load - not even 3k resolution,
> > but with a moderate
> > lowend of 1980x1080.
> 
> Interesting, that's been the opposite of my experience here. Vesa was
> much slower / using more CPU time and didn't give me the native
> resolution. Switching to scfb made the laptop "usable" for me, at
> least
> until we get a proper Intel driver that does Broadwell.

I, too, used scfb for 4 months, but I gave up and installed Linux. 
These are the things that don't work with scfb:

1) brightness control (almost at max when booting)
2) external monitor
3) hardware acceleration.

scfb is a working solution in specific cases, but a laptop isn't one of
them.

-- 
Rui Paulo