[OpenIndiana-discuss] Dual screen setup with intel DRM & VESA

[Aurélien Larcher]

On Sat, Jan 9, 2021 at 3:00 AM Araragi Hokuto <araragihokuto at outlook.com>
wrote:

> OK, apparently I've jumped into conclusion here, since the Skylake GPU
> is actually not supported by illumos DRM right now, so this setup is
> probably impossible. I'll update this after I've come up with another idea.
>

Hi,
our drm/i915 kernel driver is a bit dated and needs some work.

I have a branch with some updates but it is hard to close the gap as there
are dependencies between drm/i915, libdrm, mesa which are hard to untangle.

One missing bit in illumos is proper HDMI support which is now a
requirement for moden drm kernel. module.
This can be ported from OpenBSD last time I checked.

Kind regards

Aurelien


>
> Thanks anyway.
>
> On 1/8/21 5:44 PM, Araragi Hokuto wrote:
> > Hello everyone.
> >
> > I'm trying to setup an OI installation for my illumos dev tasks. My
> > system has a i7-6700 CPU and RX480 graphics card, with a dual monitor
> > setup. Since there is no AMDGPU driver avaliable for illumos (Correct
> > me if I'm wrong, but https://www.illumos.org/issues/8069 does not seem
> > to have a corresponding kernel module, and I couldn't get that working
> > by simply installing the userland component, I'm assuming there is
> > still no actual support at this moment?), I'm currently using VESA
> > xorg driver, which works fine for me; but since it uses VESA BIOS for
> > display, there is no dual screen support.
> >
> > But I noticed that there is intel DRM support on illumos, and I do
> > have a intel GPU (the integrated GPU in my i7), so I'm thinking: is it
> > possible to utilize both GPU for dual screen support?
> >
> > More specifically, these are what I'm trying to do:
> >
> > a) Use VESA driver for RX480, and connect the primary screen to its
> > HDMI output, which is already working by default, and:
> >
> > b) Enable intel DRM on the integrated GPU, and connect the secondary
> > monitor to the HDMI port provided by my motherboard.
> >
> > a) is working by default now, and enabling intel GPU while keep the
> > AMD GPU working is certainly doable in my BIOS (verified under Linux
> > with xrandr). But I'm not sure how to configure X server on illumos to
> > make it aware of this setup.
> >
> > Therefore, is there anyone have ideas of what configure should I try,
> > or some alternative way to setup dual screen with VESA/intel DRM?
> > Unfortunately there is only one HDMI port on my motherboare, so I
> > don't think connecting both monitor to intel GPU is an option (again,
> > correct me if I'm wrong).
> >
> > Thanks in advance.
> >
> >
> >
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>
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