Re: i915 observations

["John D. Baker" <jdbaker%consolidated.net@localhost>]

On Thu, 21 Jul 2022, Frank Kardel wrote:

> [    41.124] (II) intel(0): Using Kernel Mode Setting driver: i915, version
> 1.6.0 20200114
> [    41.125] (WW) Falling back to old probe method for modesetting
> [    41.126] (WW) Falling back to old probe method for wsfb
> [    41.126] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card
> support

Somewhere in here, not too much after the above messages, there should
be a line that tells exactly what graphics device was found.  For example,
on my machine, it will say:

[...]
[   362.756] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[   362.756] (II) intel(0): Creating default Display subsection in Screen sectio
n
        "Builtin Default intel Screen 0" for depth/fbbpp 24/32
[   362.756] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[   362.756] (==) intel(0): RGB weight 888
[   362.756] (==) intel(0): Default visual is TrueColor
[   362.756] (--) intel(0): Integrated Graphics Chipset: Intel(R) G41
[...]

> [    41.144] (II) intel(0): SNA initialized with disabled backend
> [    41.144] (==) intel(0): Backing store enabled

Up to this point, a real i82915 and earlier were observed to work fine
with SNA, i82945 through at least i82Q45 do not work with SNA and the
various "*well" and "*Bridge" devices again worked with SNA.

I have only i82810e, i82845, i82915, i8294[56], i82G41 and i82Q45 based
systems so that limits how far I was able to test things.

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