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

[O. Hartmann]

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.

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.

From my server, equipted with a IvyBridge i3-class CPU with integrated iGPU, I even get
this message from 11.0-CURRENT:

vgapci0 at pci0:0:2:0:     class=0x030000 card=0x01521849 chip=0x01528086 rev=0x09 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller'
    class      = display
    subclass   = VGA
    bar   [10] = type Memory, range 64, base 0xf7800000, size 4194304, enabled
    bar   [18] = type Prefetchable Memory, range 64, base 0xe0000000, size 268435456,
enabled bar   [20] = type I/O Port, range 32, base 0xf000, size 64, enabled
    cap 05[90] = MSI supports 1 message 
    cap 01[d0] = powerspec 2  supports D0 D3  current D0
    cap 13[a4] = PCI Advanced Features: FLR TP


The very same CURRENT (most recent as I built world on all system today) doesn't
recognize the Haswell's HD4600 iGPU (i5-4200M). So, it seems impossible to me that people
can report having this GPU working if even the most recent FreeBSD CURRENT doesn't
recognize it.
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