From mboxrd@z Thu Jan  1 00:00:00 1970
From: "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de>
Subject: Re: kmscon not working on MacBook
Date: Mon, 9 Mar 2020 08:43:58 +0100
Message-ID: <20200309074358.jly3mtrevwm75wip@pelzflorian.localdomain>
References: <86lfoqy8h0.fsf@dismail.de> <87pne3d5t6.fsf@gnu.org>
 <60bd323b399bc4fafefc74d7fa84c0db@dismail.de>
 <20200308120400.bdrkyo653fhbtkml@pelzflorian.localdomain>
 <87a74q8spt.fsf_-_@gnu.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Return-path: <guix-devel-bounces+gcggd-guix-devel=m.gmane-mx.org@gnu.org>
Received: from eggs.gnu.org ([2001:470:142:3::10]:38769)
 by lists.gnu.org with esmtp (Exim 4.90_1)
 (envelope-from <pelzflorian@pelzflorian.de>) id 1jBD51-0005nS-8P
 for guix-devel@gnu.org; Mon, 09 Mar 2020 03:44:04 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
 (envelope-from <pelzflorian@pelzflorian.de>) id 1jBD50-00047q-6M
 for guix-devel@gnu.org; Mon, 09 Mar 2020 03:44:03 -0400
Content-Disposition: inline
In-Reply-To: <87a74q8spt.fsf_-_@gnu.org>
List-Id: "Development of GNU Guix and the GNU System distribution."
 <guix-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-devel>,
 <mailto:guix-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/guix-devel>
List-Post: <mailto:guix-devel@gnu.org>
List-Help: <mailto:guix-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-devel>,
 <mailto:guix-devel-request@gnu.org?subject=subscribe>
Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane-mx.org@gnu.org
Sender: "Guix-devel"
 <guix-devel-bounces+gcggd-guix-devel=m.gmane-mx.org@gnu.org>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: guix-devel@gnu.org, jbranso@dismail.de

On Sun, Mar 08, 2020 at 10:03:26PM +0100, Ludovic Court=C3=A8s wrote:
> In the past, Mathieu, Florian, and others looked at similar issues on
> some graphics boards.  Perhaps there=E2=80=99s something we can do here=
 to
> special-case this hardware?
>=20
> Ludo=E2=80=99.

The affected hardware is diverse and I see no pattern.  I would favor
restarting with mingetty.  However, the installer runs but just has no
display, so I do not know how to detect it.

My Macbook using =E2=80=9CNVIDIA Corporation MCP89 [GeForce 320M] (rev a2=
)=E2=80=9D
runs the installer just fine.

A desktop PC using =E2=80=9CNVIDIA Corporation GM107 [GeForce GTX 750 Ti]=
 (rev
a2)=E2=80=9D runs it just fine too.

Another PC using =E2=80=9CAdvanced Micro Devices, Inc. [AMD/ATI] Oland PR=
O
[Radeon R7 240/340]=E2=80=9D runs the installer just fine (but not Xorg X=
).

A laptop Acer Aspire 5738 using =E2=80=9CAdvanced Micro Devices,
Inc. [AMD/ATI] RV710/M92 [Mobility Radeon HD 4530/4570/545v]=E2=80=9D *fa=
ils*
with a black screen; manual installation is required (which I have not
tested but probably works).

Another laptop Uniwill U50SI1 using =E2=80=9CSilicon Integrated Systems [=
SiS]
771/671 PCIE VGA Display Adapter (rev 10)=E2=80=9D *fails* the same way.
Manual install works fine.  Note that I cannot boot non-Windows
install images (Debian or Guix) on this machine, only via DVD, and
Xorg X server only runs using uvesafb with a v86d helper.

None of these installers flicker; the screen is black or it runs fine.

Regards,
Florian