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

On Sat, 2014-09-20 at 20:13 +0200, O. Hartmann wrote:
> Am Sat, 20 Sep 2014 19:15:30 +0200
> "O. Hartmann" <ohartman_at_zedat.fu-berlin.de> schrieb:
> 
> > Am Sat, 20 Sep 2014 08:27:27 -0600 (MDT)
> > Warren Block <wblock_at_wonkity.com> schrieb:
> > 
> > > On Sat, 20 Sep 2014, O. Hartmann wrote:
> > > 
> > > > Am Sat, 20 Sep 2014 07:36:21 -0600 (MDT)
> > > > Warren Block <wblock_at_wonkity.com> schrieb:
> > > >
> > > >> On Fri, 19 Sep 2014, O. Hartmann wrote:
> > > >>
> > > >>> nVidia's BLOB from port x11/nvidia-driver seems to have problems in FreeBSD
> > > >>> 11.0-CURRENT #2 r271869: Fri Sep 19 13:28:03 CEST 2014 amd64, on Lenovo ThinkPad
> > > >>> Edge E540 laptop with CPU i5-4200M (Haswell) with integrated HD4600 Intel iGPU and
> > > >>> dedicated nVidia GT 740M (Optimus) working correctly.
> > > >>
> > > >> 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 speed up
> > > >> the Intel graphics or disabled for power saving.  I don't know if
> > > >> versions where the Nvidia section is a full discrete video adapter that
> > > >> can be used alone are still called "Optimus".
> > > >>
> > > >> Some Optimus owners have reported being able to use the Intel drivers
> > > >> after disabling the Nvidia GPU in the BIOS or UEFI.  If an option 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 the 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 adaptor as a discrete adaptor
> > > > with Optimus technology and everything sounds to me like it can be selected
> > > > exclusively. What you describes is that I definitely need to use the HD4600 iGPU on
> > > > FreeBSD in the first place since the nVidia hardware is a kind of "appendix" to the
> > > > HD4600.
> > > 
> > > Optimus started out that way, but they might use the same name now for 
> > > models where the additional GPU is a full discrete adapter.
> > 
> > I tried to retrieve  informations about the settings and implementations in the lenovo
> > E540, but I guess the only answer can be given by developer documentation. I can not
> > figure out how the GPU is attached to the system. The technical specifications do not
> > mention the requirement of a iGPU and shared memory - as Optimus would require.
> > 
> > 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 requires the presence of
> > the iGPU. That would explain why the nvidia BLOB is detecting the GPU, but can not find
> > any physical display socket, not even the built-in LCD. They're maybe wired all throught
> > the Haswell's HD4600 iGPU? 
> > 
> > > 
> > > > Anyway, I also tried to configure X11 as HD4600 only and X11 doesn'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 Graphics" only in the
> > > > laptop's UEFI/Firmware. When enabling "nVidia Optimus", a recognized vga0: device
> > > > shows up.
> > > 
> > > Whoops, HD4600 is Haswell.  The intel driver on FreeBSD does not support 
> > > Haswell video yet.
> > 
> > 
> > I suspected that :-(
> > 
> > Thanks anyway,
> > 
> > Oliver
> 
> 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 applicable to the GT
> 740M (complains, rightfully, that the found device isn't supported by the "nv" driver).
> 
> I face a mess here ... :-(

It was removed, because we missing kernel support for the nouveau
driver.