Re: Intel Iris Query

[RVP <rvp%SDF.ORG@localhost>]

On Sat, 7 May 2022, Brian Stuart wrote:

> I'm wondering about the state of Intel Iris support.  I've got a Dell
> Latitude 7420 with a Tiger Lake i5.  But the i915 driver doesn't seem
> to like it.  The lack of acceleration is a little annoying; sometimes
> it would be nice if the video were a little smoother and more
> performant.

> [     1.051398] pchb0 at pci0 dev 0 function 0: Intel Tiger Lake (UP3
> 4Core) Host (rev. 0x01)
> [     1.051398] i915drmkms: preliminary hardware support disabled
> [     1.051398] genfb0 at pci0 dev 2 function 0: Intel UHD Graphics
> (GT2, 96/80 EU) (rev. 0x01)
> [     1.051398] genfb0: framebuffer at 0x4000000000, size 1920x1080,
> depth 32, stride 7680
> [     1.051398] genfb0: shadow framebuffer enabled, size 8100 KB
> [     1.051398] wsdisplay0 at genfb0 kbdmux 1: console (default, vt100
> emulation), using wskbd0
> [     1.051398] wsmux1: connecting to wsdisplay0
> [     1.051398] drm at genfb0 not configured
>
> and from Xorg.0.log:
>
> [    17.509] (EE) open /dev/dri/card0: No such file or directory
> [    17.509] (WW) Falling back to old probe method for modesetting
> [    17.509] (EE) open /dev/dri/card0: No such file or directory
> [    17.509] vesa: Ignoring device with a bound kernel driver
> [    17.509] (WW) Falling back to old probe method for wsfb
> [    17.509] (II) wsfb(2): using default device
> [    17.509] (II) wsfb(0): Creating default Display subsection in Screen section
>        "Builtin Default wsfb Screen 0" for depth/fbbpp 24/32
> [    17.509] (==) wsfb(0): Depth 24, (==) framebuffer bpp 32

Looks like your card isn't supported yet:

[     1.051398] i915drmkms: preliminary hardware support disabled

and the system is falling back to the dumb framebuffer `genfb'. And that
only drives a single monitor (the system's primary one).

>  But the big issue is that I can't seem to use any external video, such
> as the HDMI port.

As above.

-RVP