From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2E52DEDB7CF for ; Tue, 7 Apr 2026 07:51:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8BBC689E1A; Tue, 7 Apr 2026 07:51:51 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="MBgEXcoI"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 92CB689E1A for ; Tue, 7 Apr 2026 07:51:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1775548310; x=1807084310; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version; bh=zPidFyj/5K+uqm5xMG/ZLu1N7jXnDCjX5osQ6GMESPI=; b=MBgEXcoIJ7nmSB5hUopNGK7B/JUBsdL3C+w9iAkIqxAJXLnX8X/Vua+v 9RmfUzKp5MGwzjgXjDQz9N5obaeEPysPoGfYHbYM03yPQl/OkaTCXrRx+ /p/vcsQ3fybMcsndrsoymKnWgeSbVX4thli3b196PjQe3RwBxSaNRmboS 65HSXocUgtuEJXzX0HMc4GtQyNfVEA/m7PWcDlvlh/qSa+bR1YQmKn8WP MTVN4OtSvYYy4W1af+JZWKdoU1AXfMEydc7d3hrjaN4seu1I089u9BjfW JGx4dYx7CmWGeMM5lAdwLBQXQKZCNgvzYmTpRE5PvMh6X0PYLUu+qnQc2 A==; X-CSE-ConnectionGUID: VyPzynZuSYujypb4dDKsCg== X-CSE-MsgGUID: sLmxAPUZQc6ag+i1o6JKdw== X-IronPort-AV: E=McAfee;i="6800,10657,11751"; a="79095296" X-IronPort-AV: E=Sophos;i="6.23,165,1770624000"; d="scan'208";a="79095296" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2026 00:51:49 -0700 X-CSE-ConnectionGUID: U+4bHYwUTs6n+pnpsjyJJw== X-CSE-MsgGUID: zTjYf6VsS/KZXRgvDOlx9Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,165,1770624000"; d="scan'208";a="232132566" Received: from mjarzebo-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.246.244]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Apr 2026 00:51:47 -0700 From: Jani Nikula To: denis , dri-devel@lists.freedesktop.org Cc: Denis Demchenko Subject: Re: [PATCH] drm/edid: Add quirk for YUK monitor 0xaa01 In-Reply-To: <20260401044238.15201-1-den.demchenko@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs Bertel Jungin Aukio 5, 02600 Espoo, Finland References: <20260401044238.15201-1-den.demchenko@gmail.com> Date: Tue, 07 Apr 2026 10:51:44 +0300 Message-ID: MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Wed, 01 Apr 2026, denis wrote: > From: Denis Demchenko > > This monitor results in a black screen with amdgpu unless > EDID_QUIRK_FORCE_8BPC is applied. > > Add a quirk to force 8bpc which fixes the issue. > > Signed-off-by: Denis Demchenko Would be really useful to have an fdo gitlab issue with the EDID and possibly dmesg attached before applying quirks. BR, Jani. > --- > drivers/gpu/drm/drm_edid.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c > index ff432ac6b..b533eb74e 100644 > --- a/drivers/gpu/drm/drm_edid.c > +++ b/drivers/gpu/drm/drm_edid.c > @@ -253,6 +253,9 @@ static const struct edid_quirk { > /* LQ116M1JW10 displays noise when 8 bpc, but display fine as 6 bpc */ > EDID_QUIRK('S', 'H', 'P', 0x154c, BIT(EDID_QUIRK_FORCE_6BPC)), > > + /* YUK */ > + EDID_QUIRK('Y', 'U', 'K', 0xaa01, EDID_QUIRK_FORCE_8BPC), > + > /* > * @drm_edid_internal_quirk entries end here, following with the > * @drm_edid_quirk entries. -- Jani Nikula, Intel