From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#40538: installer: Support uvesafb to install on machines without
 KMS.
Date: Tue, 14 Apr 2020 12:09:12 +0200
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To: "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de>
Cc: 40538@debbugs.gnu.org

Hi,

"pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis:

> That is good to hear!  The options I know of are:
>
> 1) Make the loading of the uvesafb kernel module by the installer
> conditional.  For your GPU, don=E2=80=99t load uvesafb, if before it work=
ed
> without.
>
> 2) Add modprobe.blacklist=3Di915 to the default kernel parameters (or
> whatever the kernel module for this GPU is), so this kind of GPU
> always only uses uvesafb.
>
> 3) Add nomodeset to the default kernel parameters for the installer,
> so all GPUs always use uvesafb.
>
> I do not know if uvesafb works on all display technologies though.

Would there be a way to load uvesabf only on hardware where it=E2=80=99s kn=
own
to fix things?

Or better yet, is there a way to check whether KMS is already using
another driver, and to not load uvesafb in that case?  Probably there=E2=80=
=99s
some info in /sys.

> uvesafb certainly is not supported on ARM (though maybe it works; the
> README of uvesafb=E2=80=99s helper program v86d just says it is not suppo=
rted).

Let=E2=80=99s forget about ARM, we don=E2=80=99t ship Guix System installat=
ion images
for ARM.

Ludo=E2=80=99.