Date:   Sat, 08 Jan 2022 05:11:50 +0000
To:     jani.nikula@linux.intel.com
From:   Orlando Chamberlain <redecorating@protonmail.com>
Cc:     ashisharora.linux@outlook.com, intel-gfx@lists.freedesktop.org,
        joonas.lahtinen@linux.intel.com, linux-kernel@vger.kernel.org,
        rodrigo.vivi@intel.com, Aun-Ali Zaidi <admin@kodeit.net>
Reply-To: Orlando Chamberlain <redecorating@protonmail.com>
Subject: Re: [PATCH] drm/i915: Discard large BIOS framebuffers causing display corruption.
Message-ID: <20220108050812.6303-1-redecorating@protonmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

I haven't observed "display corruption", but on my MacBookPro16,1 the botto=
m
and right edges of the TTY are not on the screen, so a few lines of text
cannot be seen.

This also occurs on the internal displays of all (as far as I know) other
2018-2020 Intel Macbooks when using the Intel GPU (The 15" and 16" ones
also have an AMDGPU, but this issue occurs when they have the Intel GPU
set as the boot gpu).

There's a similar patch that hasn't been sent upstream that people with the=
se
Macbooks have been using:
https://github.com/aunali1/linux-mbp-arch/blob/master/7001-drm-i915-fbdev-D=
iscard-BIOS-framebuffers-exceeding-h.patch

Cc: Aun-Ali Zaidi <admin@kodeit.net>

--
Thanks,
Orlando