Re: Intel Haswell support - Any updates?

From: Lundberg, Johannes <johannes_at_brilliantservice.co.jp>
Date: Fri, 18 Sep 2015 09:00:20 +0900
Same here. Vesa won't work, I tried scfb and while it works to get graphics
on the screen it is not an option when my development requires hardware
acceleration so current I am running Arch Linux.

Since our target platform is Intel Atom BayTrail/CherryTrail there's no
other way..

--
Johannes Lundberg
BRILLIANTSERVICE CO., LTD.

On Fri, Sep 18, 2015 at 12:28 AM, Rui Paulo <rpaulo_at_me.com> wrote:

> 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
>
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Received on Thu Sep 17 2015 - 22:00:42 UTC

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