Re: Userconf & DRM driver (Was Re: Panic: no console device)

[Chavdar Ivanov <ci4ic4%gmail.com@localhost>]

Try 'disable nouveau'. In the past I also had to 'disable genfb' on my
Intel/NVidia Optimus laptop. Now it works - with intel drm, still
without 3D accelleration - without disabling anything.

I have another laptop with only radeonfb, a FireGL mobile card, which
otherwise should have worked, but any attempt to use it hard-restes
the laptop, so I have
'userconf=disable radeon*' in /boot.cfg .

On Thu, 7 Mar 2019 at 19:54, Bob Bernstein <poobah%ruptured-duck.com@localhost> wrote:
>
> Hi Michael. I have taken the liberty of ressurecting this post in
> order to get a tad more help with its suggestion. I hope I haven't
> violated any list etiquette in the process.
>
> On Mon, Feb 25, 2019 at 12:34:25PM -0000, Michael van Elst wrote:
>
> > It's probably trying to use a graphics card that isn't supported.
> > In that case you could try to intercept the bootloader to get a
> > prompt and 'boot netbsd -c'. This will start in userconf mode where,
> > assuming the keyboard works, you can disable the DRM driver for
> > your graphics card. When you quit userconf mode, it will then
> > fall back to use the plain VGA driver.
>
> How can I identify the specific driver in question? Perhaps userconf
> itself has a way of doing this? Is there some hallmark token for
> which I should search dmest?
>
> --
> Bob Bernstein



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