FreeBSD-12.1 on laptop

[Polytropon]

On Thu, 28 Nov 2019 11:51:39 -0700, Kurt Buff - GSEC, GCIH wrote:
> Laptops with two graphics processors typically use the most powerful
> one only to drive external monitors, and possibly only through a
> docking station, though I'm not as clear on that point.

Depends. I have a HP one that seems to contain a "logic" that
switches from one GPU to the other depending on a HDMI connection
being present, but displays the same image both on the LCD and
the externel HDMI display.

However, it would be helpful to verify the _exact_ hardware.
With "pciconf -lv | less" and looking for a "display" entry,
one or two should be found.

An entry for nVidia might look like this (desktop card):

	vgapci0 at pci0:2:0:0: class=0x030000
                            card=0x06201462 chip=0x039210de rev=0xa1 hdr=0x00
	    vendor     = 'NVIDIA Corporation'
	    device     = 'NVIDIA GeForce 7600 GS (G73)'
	    class      = display
	    subclass   = VGA

Or for Intel, in a Lenovo Thinkpad R61i:

	vgapci0 at pci0:0:2:0: class=0x030000
                            card=0x20b517aa chip=0x2a028086 rev=0x0c hdr=0x00
	    vendor     = 'Intel Corporation'
	    device     = 'Mobile GM965/GL960 Integrated Graphics Controller
	                  (primary)'
	    class      = display
	    subclass   = VGA

	vgapci1 at pci0:0:2:1: class=0x038000
	                    card=0x20b517aa chip=0x2a038086 rev=0x0c hdr=0x00
	    vendor     = 'Intel Corporation'
	    device     = 'Mobile GM965/GL960 Integrated Graphics Controller
	                  (secondary)'
	    class      = display

As you can see - two instances of Intel graphics - I don't know
if this is due to the fact that the R61i is in a docking station
where the CRT monitor is connected - yes, it _is_ an actual CRT. :-)


-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...