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Date:      Sun, 21 Sep 2014 01:11:43 +0200
From:      "O. Hartmann" <ohartman@zedat.fu-berlin.de>
To:        Koop Mast <kwm@rainbow-runner.nl>
Cc:        Warren Block <wblock@wonkity.com>, freebsd-x11@freebsd.org, FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject:   Re: x11/nvidia-driver (340.24/340.32/343.13): nvidia BLOB doesn't recognize any display socket on Lenovo E540/UEFI and FBSD CURRENT
Message-ID:  <20140921011143.0ae998ff.ohartman@zedat.fu-berlin.de>
In-Reply-To: <1411240906.1174.2.camel@rainbow-runner.nl>
References:  <20140919201210.72650231.ohartman@zedat.fu-berlin.de> <alpine.BSF.2.11.1409200727510.96859@wonkity.com> <20140920161012.02844320.ohartman@zedat.fu-berlin.de> <alpine.BSF.2.11.1409200824500.96859@wonkity.com> <20140920191530.6b538c62.ohartman@zedat.fu-berlin.de> <20140920201347.0a4b9658.ohartman@zedat.fu-berlin.de> <1411240906.1174.2.camel@rainbow-runner.nl>

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Am Sat, 20 Sep 2014 21:21:46 +0200
Koop Mast <kwm@rainbow-runner.nl> schrieb:

> On Sat, 2014-09-20 at 20:13 +0200, O. Hartmann wrote:
> > Am Sat, 20 Sep 2014 19:15:30 +0200
> > "O. Hartmann" <ohartman@zedat.fu-berlin.de> schrieb:
> >=20
> > > Am Sat, 20 Sep 2014 08:27:27 -0600 (MDT)
> > > Warren Block <wblock@wonkity.com> schrieb:
> > >=20
> > > > On Sat, 20 Sep 2014, O. Hartmann wrote:
> > > >=20
> > > > > Am Sat, 20 Sep 2014 07:36:21 -0600 (MDT)
> > > > > Warren Block <wblock@wonkity.com> schrieb:
> > > > >
> > > > >> On Fri, 19 Sep 2014, O. Hartmann wrote:
> > > > >>
> > > > >>> nVidia's BLOB from port x11/nvidia-driver seems to have problem=
s in FreeBSD
> > > > >>> 11.0-CURRENT #2 r271869: Fri Sep 19 13:28:03 CEST 2014 amd64, o=
n Lenovo
> > > > >>> ThinkPad Edge E540 laptop with CPU i5-4200M (Haswell) with inte=
grated HD4600
> > > > >>> Intel iGPU and dedicated nVidia GT 740M (Optimus) working corre=
ctly.
> > > > >>
> > > > >> Optimus is supposed to be full Intel graphics plus an Nvidia GPU=
.  The
> > > > >> extra GPU uses the same display memory and can be enabled to spe=
ed up
> > > > >> the Intel graphics or disabled for power saving.  I don't know if
> > > > >> versions where the Nvidia section is a full discrete video adapt=
er that
> > > > >> can be used alone are still called "Optimus".
> > > > >>
> > > > >> Some Optimus owners have reported being able to use the Intel dr=
ivers
> > > > >> after disabling the Nvidia GPU in the BIOS or UEFI.  If an optio=
n to
> > > > >> disable the Nvidia GPU is not present, some people have reported=
 success
> > > > >> with an xorg.conf that uses only the intel driver and ignores th=
e Nvidia
> > > > >> hardware.
> > > > >
> > > > > Thanks Warren.
> > > > >
> > > > > But this sounds even more frustrating now. I look around the web =
even at
> > > > > Lenovo's support forum. Many people report the GT 740M nVidia ada=
ptor as a
> > > > > discrete adaptor with Optimus technology and everything sounds to=
 me like it
> > > > > can be selected exclusively. What you describes is that I definit=
ely need to
> > > > > use the HD4600 iGPU on FreeBSD in the first place since the nVidi=
a hardware is
> > > > > a kind of "appendix" to the HD4600.
> > > >=20
> > > > Optimus started out that way, but they might use the same name now =
for=20
> > > > models where the additional GPU is a full discrete adapter.
> > >=20
> > > I tried to retrieve  informations about the settings and implementati=
ons in the
> > > lenovo E540, but I guess the only answer can be given by developer do=
cumentation. I
> > > can not figure out how the GPU is attached to the system. The technic=
al
> > > specifications do not mention the requirement of a iGPU and shared me=
mory - as
> > > Optimus would require.
> > >=20
> > > But extrapolating from that "shit-covering" public relations talking =
at nVidia's
> > > site I guess the GT 740M is definitely a shared memory solution and r=
equires the
> > > presence of the iGPU. That would explain why the nvidia BLOB is detec=
ting the GPU,
> > > but can not find any physical display socket, not even the built-in L=
CD. They're
> > > maybe wired all throught the Haswell's HD4600 iGPU?=20
> > >=20
> > > >=20
> > > > > Anyway, I also tried to configure X11 as HD4600 only and X11 does=
n't work
> > > > > properly: it doesn't even start up and loading the "intel" driver=
 complains
> > > > > about a missing device
> > > > > - preceeded by a lot of /dev/dri errors. This indicates to me, in=
 a naiv manner,
> > > > > that this HD4600 isn't recodnized by the kernel, either. I do not=
 see any kind
> > > > > of vga0: entry in the kernel log when enabling "Integrated Graphi=
cs" only in the
> > > > > laptop's UEFI/Firmware. When enabling "nVidia Optimus", a recogni=
zed vga0:
> > > > > device shows up.
> > > >=20
> > > > Whoops, HD4600 is Haswell.  The intel driver on FreeBSD does not su=
pport=20
> > > > Haswell video yet.
> > >=20
> > >=20
> > > I suspected that :-(
> > >=20
> > > Thanks anyway,
> > >=20
> > > Oliver
> >=20
> > Oh, by the way, where is x11-drivers/xf86-video-noveau? I can only find
> > x11-drivers/xf86-video-nv, which covers old hardware and it is not appl=
icable to the
> > GT 740M (complains, rightfully, that the found device isn't supported b=
y the "nv"
> > driver).
> >=20
> > I face a mess here ... :-(
>=20
> It was removed, because we missing kernel support for the nouveau
> driver.


So, every new GPU not supported by xf86-video-nv has to use nVidia's BLOB t=
hen?

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