From: Lukas Wunner <lukas@wunner.de>
To: Atharva Tiwari <atharvatiwarilinuxdev@gmail.com>
Cc: Ard Biesheuvel <ardb@kernel.org>,
Jani Nikula <jani.nikula@linux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Tvrtko Ursulin <tursulin@ursulin.net>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Javier Martinez Canillas <javierm@redhat.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Lenny Szubowicz <lszubowi@redhat.com>,
Ingo Molnar <mingo@kernel.org>,
Francesco Pompo <francescopompo2@gmail.com>,
linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
dri-devel@lists.freedesktop.org
Subject: Re: [PATCH v2 0/2] Add support for eGPUs on Apple Products
Date: Wed, 28 Jan 2026 16:56:21 +0100 [thread overview]
Message-ID: <aXoxpWFE0rByjS-y@wunner.de> (raw)
In-Reply-To: <20260128145855.1071-1-atharvatiwarilinuxdev@gmail.com>
On Wed, Jan 28, 2026 at 02:58:36PM +0000, Atharva Tiwari wrote:
> This series adds support for eGPUs on Apple products, by
> enabling apple-set-os on all apple devices.
>
> A side effect of this patch is that the iGPU becomes enabled on iMacs.
> However, iMacs can’t use the iGPU to drive the display
> (They can't link-train the internal display),
> so displays must be disabled on iMacs.
Oh there's the explanation that should have been in the commit message
of patch [2/2].
It's possible that the iMac has a multiplexer built-in which can
switch between the iGPU and dGPU at runtime. Please ensure that
you have set CONFIG_APPLE_GMUX=y in your .config, the gmux driver
should bind to the multiplexer if there is one.
If there is a multiplexer built-in, then disabling the iGPU is the
wrong approach.
Thanks,
Lukas
next prev parent reply other threads:[~2026-01-28 15:56 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-28 14:58 [PATCH v2 0/2] Add support for eGPUs on Apple Products Atharva Tiwari
2026-01-28 14:58 ` [PATCH v2 1/2] efi/libstub: enable apple-set-os for all apple devices Atharva Tiwari
2026-01-28 15:45 ` Lukas Wunner
2026-01-29 4:37 ` Atharva Tiwari
2026-01-29 10:33 ` Lukas Wunner
2026-01-29 17:53 ` Atharva Tiwari
2026-02-02 8:01 ` Atharva Tiwari
2026-01-28 14:58 ` [PATCH v2 2/2] drm/i915/display: Disable display for iMac's Atharva Tiwari
2026-01-28 15:23 ` Jani Nikula
2026-01-28 15:37 ` Ville Syrjälä
2026-01-28 16:03 ` Lukas Wunner
2026-01-28 15:49 ` Lukas Wunner
2026-01-28 15:56 ` Lukas Wunner [this message]
2026-01-28 17:12 ` [PATCH v2 0/2] Add support for eGPUs on Apple Products Atharva Tiwari
2026-01-29 21:00 ` ✗ LGCI.VerificationFailed: failure for Add support for eGPUs on Apple Products (rev2) Patchwork
2026-01-29 21:02 ` Patchwork
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