x11/nvidia-driver (340.24/340.32/343.13): nvidia BLOB doesn't recognize any display socket on Lenovo E540/UEFI and FBSD CURRENT

Hi.

Very preliminary question, but not mentioned before if I haven't
missed it.

Have you disabled Optimus?

If not, you need to disable it (or definately select nvidia discrete
GPU) in BIOS / UEFI firmware, as currently any version of nvidia
proprietary driver for FreeBSD does NOT support Optimus. Please
read /usr/local/share/doc/NVIDIA_GLX-1.0/README for detail.
(The location could be different if you installed nvidia driver WITHOUT
using ports nor pkg.)

At least, my ThinkPad T420 has an option to select Optimus / internal
intel GPU / nvidia discrete GPU, and I need to select nvidia discrete
GPU to use x11/nvidia-driver.


Sat Sep 20 23:11:54 UTC 2014
O. Hartmann <ohartman_at_zedat.fu-berlin.de> wrote:

>Am Sat, 20 Sep 2014 21:21:46 +0200
>Koop Mast <kwm at 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 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.
>
>
>So, every new GPU not supported by xf86-video-nv has to use nVidia's
>BLOB then?

-- 
Tomoaki AOKI    junchoon_at_dec.sakura.ne.jp