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([171.61.163.171]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a8dc225534sm108280865ad.68.2026.02.02.23.31.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Feb 2026 23:32:05 -0800 (PST) From: Atharva Tiwari To: Cc: Atharva Tiwari , Jani Nikula , Ard Biesheuvel , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , David Airlie , Simona Vetter , Thomas Zimmermann , Javier Martinez Canillas , "Borislav Petkov (AMD)" , Ingo Molnar , Francesco Pompo , Lenny Szubowicz , 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: [PATCH v3 2/2] drm/i915/display: Disable display for iMac's Date: Tue, 3 Feb 2026 07:31:18 +0000 Message-ID: <20260203073130.1111-3-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260203073130.1111-1-atharvatiwarilinuxdev@gmail.com> References: <20260203073130.1111-1-atharvatiwarilinuxdev@gmail.com> Precedence: bulk X-Mailing-List: linux-efi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Disable display on iMacs, as they can't do link training on the internal display. (tested on iMac20,1) Reviewed-by: Jani Nikula Signed-off-by: Atharva Tiwari --- .../gpu/drm/i915/display/intel_display_device.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c index 1170afaa8680..b1fec1018d7e 100644 --- a/drivers/gpu/drm/i915/display/intel_display_device.c +++ b/drivers/gpu/drm/i915/display/intel_display_device.c @@ -3,6 +3,7 @@ * Copyright © 2023 Intel Corporation */ +#include #include #include @@ -1435,7 +1436,18 @@ static bool has_no_display(struct pci_dev *pdev) {} }; - return pci_match_id(ids, pdev); + static const struct dmi_system_id dmi_ids[] = { + { + .ident = "Apple Inc. iMac", + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "iMac"), + } + }, + {} + }; + + return pci_match_id(ids, pdev) || dmi_check_system(dmi_ids); } #define INTEL_DISPLAY_DEVICE(_id, _desc) { .devid = (_id), .desc = (_desc) } -- 2.43.0