From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=192.198.163.8 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794220244; b=fWnviSD3SHBnmAowCvitEbas5K0A8m0xFpJlavKrgKYo5vxKIubSwJB4o8q+5GsbeVhk hjR4cmXSXZa2KgZH/GYjHlv0UAAUEgmV0Sb/ow4vezp+OZPoWAIDNc7kQDkcnyYDiNY2V oDU0CahRMLtugM8JfzGhQF91nZNCuhTJdC2rvKuLR2NnndiDpc6o3lYNO4ll8XhvtxY95 46aZYIy3CZLSEuv3KRMQLn5VDLWngSb88jRv/VdA/f/6vBXGMtpWLNlX+aE5xwEjohRAt MoKe1e+CR17rn0KY+NIVkQNl4YZUnvIco551NiTr9no1GQ/MyUU9goKSjfZECqVSPlg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794220244; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:X-IronPort-AV:Received:X-CSE-ConnectionGUID: X-CSE-MsgGUID:X-ExtLoop1:X-IronPort-AV:Received:Received:Date:From:To: Cc:Subject:Message-ID:References:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; bh=kVP/b/FFJn5Siw/0uyO5I37pGbaxzxd4gPTE5X5rhOk=; b=vYrIT4BAK7rDSmBBUx156IkB+z2CKq3In0ag6ecZ5NSsLGpOvuEb7JJXu9INNvWO9lXX prhRWAPIAmE/G+qd3M8OQlMLruDFkO/vZe/K63oPUT3nChbJeFMYcJULXnSN0CLuoyCA1 +4rXxssBzuiiw78hVWMEZLug4UH4YewaNCce1milqv6MP3M9QjE2F9Uwuzogp0GAjeUmy CqiW0N8ViKlN823Ij0MMmc8O8raJUw0H0yL20oP3dW1zJ8M6C5A1LvAn/1dih6qBfRDbY Gul0FWJ2YBhu0rXmaVOjemxdASF6vK4RVhcQtyhrjP6GvBtY5DmKe6C0QaUHRQgA3Jg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=OtVX5fZV; arc=none smtp.remote-ip=192.198.163.8 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A1C2606A330; Mon, 9 Nov 2026 10:30:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 5A1C2606A330 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=OtVX5fZV DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1794220244; x=1825756244; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=kVP/b/FFJn5Siw/0uyO5I37pGbaxzxd4gPTE5X5rhOk=; b=OtVX5fZV6XX2dUKZEQC5uCb8OXbPWNbS/D2PY9nRiZ3JKD44soDVOl/7 Ip/R8vdwe+zJfdV4699/rnqa1wn7QTHnvTFkEFepkIvRRWB5XnpN3SNNE +tT/fB9dZie0xb7Ho6sywTxcZ7bhR6n/YucJOiCFYPB9og+j9/mBAsWSJ 2nzy7E4J6BRNvw/sXCNpm5EA1IoE1WUiKh6uydbC4XufYgOOUMcLTLVl9 c4MyI0vtCHBSC89BjUhyJvBV3/DRWBYwWsD60MnylUkbZRb5KcWtWe94g s+S0wgU8GQ86Bw+QGRCNLkuOr3B3csCbyli8L0mhT/i3wnXHwt0Rc1OTi g==; X-CSE-ConnectionGUID: l50D0z+USGKir3LVH2iodg== X-CSE-MsgGUID: Uf0OEAqNSTqUYNKyx5B6Tg== X-IronPort-AV: E=McAfee;i="6800,10657,11960"; a="2820574" X-IronPort-AV: E=Sophos;i="6.27,203,1787036400"; d="scan'208";a="2820574" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Nov 2026 02:30:43 -0800 X-CSE-ConnectionGUID: uVloG6BFR5iSYRoEUSzD2A== X-CSE-MsgGUID: CYrWwDKERZ2OEuemrISbCQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,203,1787036400"; d="scan'208";a="7883326" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa001.jf.intel.com with ESMTP; 09 Nov 2026 02:30:41 -0800 Received: by black.igk.intel.com (Postfix, from userid 1001) id C7D9C99; Mon, 09 Nov 2026 11:30:39 +0100 (CET) Date: Mon, 9 Nov 2026 11:30:39 +0100 From: Mika Westerberg To: Duff OMelia Cc: westeri@kernel.org, andreas.noever@gmail.com, YehezkelShB@gmail.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, imre.deak@intel.com Subject: Re: [RFC PATCH] thunderbolt: Tunnel only the first DP OUT of Apple Studio Displays Message-ID: <20261109103039.GK176724@black.igk.intel.com> References: <20261106154445.517940-1-duff@omelia.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20261106154445.517940-1-duff@omelia.org> Hi, On Fri, Nov 06, 2026 at 10:44:45AM -0500, Duff OMelia wrote: > An Apple Studio Display presents its 5K panel as a 2x1 tile over two DP > OUT adapters. The first tile's connector offers the full 5120x2880 mode, > which the xe driver on my host drives over a single stream. The second > tile's connector offers only 2560x2880, and nothing uses it there. Thanks for the report! We have had problems debugging this because we have had no access to this particular monitor. I think we should investigate if we can do better here in terms of graphics. Can you provide full dmesg with thunderbolt.dyndbg=+p and drm.debug=0x10e in the kernel command line when you have everything connected and the issue reproduces?