Re: Intel Haswell support - Any updates?

Am Thu, 17 Sep 2015 11:24:40 -0400
Kris Moore <kris_at_pcbsd.org> schrieb:

> 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.
> 

... as I said - VESA is unwilling to cooperate at higher resolutions, so I do not have
any comparison parameters fro the specific single hardware. VESA was slow in the past -
compared to the nVidia BLOB or the X11 AMD HD 48XX drivers.