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.

The systems boots FreeBSD off via UEFI.

First of all: I tried versions 340.24, 340.32 and Beta 343.13 all with the very 
same
results.

Symptoms:

a) Loading kernel module "nvidia" via /boot/load.conf freezes the system after 
the
UEFI/EFI loader message shows up. Loading the kernel module vi kld_load=
in /etc/rc.conf[.local] works so far regarding loading and booting the kernel.

b) No display socket is recognized by the nvidia driver resulting in a blank 
vt() screen
after X has been started. I tried many different configurations, but at the end 
I suspect
that nVidia's "Optimus" technology may be the culprit.

The documentation of nVidia's driver for FreeBSD states that after the Xserver 
has
started it logs in Xorg.0.log (or whatever display number is used) the 
available display
sockets like (taken from the documents):

(--) NVIDIA(0): Valid display device(s) on Quadro 6000 at PCI:10:0:0
(--) NVIDIA(0):     CRT-0
(--) NVIDIA(0):     CRT-1
(--) NVIDIA(0):     DELL U2410 (DFP-0) (connected)
(--) NVIDIA(0):     NEC LCD1980SXi (DFP-1) (connected)

Nothing that similar shows up in my environment, but this:

[...]
[    58.656] (--) PCI:*(0:0:2:0) 8086:0416:17aa:502a rev 6, Mem @ 
0xf1000000/4194304,
0xe0000000/268435456, I/O @ 0x00006000/64, BIOS @ 0x????????/65536
[    58.659] (--) PCI: (0:1:0:0) 10de:1292:17aa:502a rev 161, Mem @ 
0xf0000000/16777216,
0xc0000000/268435456, 0xd0000000/33554432, I/O @ 0x00005000/128
[    58.662] (II) "extmod" will be loaded. This was enabled by default and also 
specified
in the config file.
[    58.662] (II) "dbe" will be loaded. This was enabled by default and also 
specified in
the config file.
[...]
[    60.055] (**) NVIDIA(0): Enabling 2D acceleration
[    60.485] (II) NVIDIA(0): NVIDIA GPU GeForce GT 740M (GK208) at PCI:1:0:0 
(GPU-0)
[    60.486] (--) NVIDIA(0): Memory: 2097152 kBytes
[    60.486] (--) NVIDIA(0): VideoBIOS: 80.28.25.00.27
[    60.486] (II) NVIDIA(0): Detected PCI Express Link width: 8X
[    60.486] (--) NVIDIA(0): Valid display device(s) on GeForce GT 740M at 
PCI:1:0:0
[    60.487] (--) NVIDIA(0):     none
[    60.487] (II) NVIDIA(0): Validated MetaModes:
[    60.487] (II) NVIDIA(0):     "NULL"
[    60.487] (II) NVIDIA(0): Virtual screen size determined to be 640 x 480
[    60.488] (WW) NVIDIA(0): Unable to get display device for DPI computation.
[    60.488] (==) NVIDIA(0): DPI set to (75, 75); computed from built-in default
[    60.488] (--) Depth 24 pixmap format is 32 bpp
[    60.489] (II) NVIDIA: Reserving 3072.00 MB of virtual memory for indirect 
memory
[    60.489] (II) NVIDIA:     access.
[    60.492] (II) NVIDIA(0): Setting mode "NULL"
[    60.493] (EE) NVIDIA(0): Failed to initiate mode change.
[    60.493] (EE) NVIDIA(0): Failed to complete mode change
[    60.553] (II) NVIDIA(0): Built-in logo is bigger than the screen.
[    60.573] (II) Loading extension NV-GLX
[...]

Confusing is that in the lines
[    58.656] (--) PCI:*(0:0:2:0) 8086:0416:17aa:502a rev 6, Mem @ 
0xf1000000/4194304,
0xe0000000/268435456, I/O @ 0x00006000/64, BIOS @ 0x????????/65536
[    58.659] (--) PCI: (0:1:0:0) 10de:1292:17aa:502a rev 161, Mem @ 
0xf0000000/16777216,
0xc0000000/268435456, 0xd0000000/33554432, I/O @ 0x00005000/128

both, the Intel iGPU HD4600 (PCI:*(0:0:2:0)) and the nVidia dedicated GPU GT 
740M (PCI: (0:1:0:0)) show up.

The more scaring part is then (--) NVIDIA(0): Valid display device(s):

No display device is shown although the notebook has a built-in display, a 
DisplayPort
port as well as a VGA port. On all nVidia dedicated graphics boards I use on 
diffrent
other machines with the very same driver EVERY possible connector/socket shows 
up.

The laptop has EFI/UEFI

EFI Version: 2.31
EFI Firmware: Lenovo (re. 05648)

The problem is present no matter whether the drm2 and i915kms kernel moules are 
loaded or
not.

What is wrong here? Any chance to get the nVidia GPU to work? I use at the 
moment
xf86-video-scfb which is a pain in the ass and absolutely not usable, even with 
a faster
CPU. Under average load the whole laptop screen is like a slide show.

Please CC me.

Thanks in advance,
O. Hartmann

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