From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FFC6175A80 for ; Fri, 24 Apr 2026 23:29:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=198.175.65.10 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777073389; cv=fail; b=cexYRAWq2ioh18qqOQWDfKQsbMzp1CLEwR0Z62oHvCaE0uTsTr6SiWCUAd9yAMurKWhZ5zEJ982TF5Z4++poOYLciceYkb7HW5mPEvY9XLeWiqn9zHuQPtvyCr0LN+kwIzZ1+PSCQLlZNYQRurRj4XYqmEne2SQrLgItWMER2OA= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777073389; c=relaxed/simple; bh=K8+XTBgUXMLE31q08xSzyEsuWrZaVN9IlJyWRjmN24A=; h=Message-ID:Date:Subject:To:CC:References:From:In-Reply-To: Content-Type:MIME-Version; b=pYEuREVEjBo8uqM8yGNawVyEIeJfBG3yab13lVPJFinhCZ8/o5cLpEmnTW3cWkzsBcb/QRcTFOnpnVm3yt05W99geaQCPdv4iE1UbLysJNhCqT4Grge6sACIdC/Us7uMuDUMc7tNxjA4LW+sMsBN70iMzdNZ2ayLz6VL3HqKdlk= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=XamaqXHR; arc=fail smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="XamaqXHR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1777073388; x=1808609388; h=message-id:date:subject:to:cc:references:from: in-reply-to:content-transfer-encoding:mime-version; bh=K8+XTBgUXMLE31q08xSzyEsuWrZaVN9IlJyWRjmN24A=; b=XamaqXHRLXlkm4bYyXxVfrQOmMHumZNxTIounatFFYP57eAPzqKZVFdG eLO5/QjkmbrDbJiX8dDiUqweObuIKAaFOWq3yplthozijQAjdiT/J1jKM rnVeeEoWQgH72L7q5i5yCC9K2id7kAptKMIXwruS351dT72RPoMMrp6zn AR5F6yQYeVlgE0eBnYAyVMC9P2VJE2BhInWrvAdXpnTDlTjlYLJpCINBw Mk/uO5MTrF0J+rPUstPsnJZdD2zStnyG+FuoyGZOaqxcB2KP9BBT+F8LF i+2c7wNL2erHUnvrtxvz/n4XP4roQWW7jKOWF3pVISwBWowEIpDpn4+5e Q==; X-CSE-ConnectionGUID: HEige4l+RtCXyXeEnp2gzw== X-CSE-MsgGUID: CI9J/xKDQQG+CJAl8No7lw== X-IronPort-AV: E=McAfee;i="6800,10657,11766"; a="95473090" X-IronPort-AV: E=Sophos;i="6.23,197,1770624000"; d="scan'208";a="95473090" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2026 16:29:47 -0700 X-CSE-ConnectionGUID: lYXvj35kRu6XjVRsM3SYAQ== X-CSE-MsgGUID: /ZDlSBKIQy6wF8b7k2wOkg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,197,1770624000"; d="scan'208";a="232920163" Received: from fmsmsx902.amr.corp.intel.com ([10.18.126.91]) by orviesa009.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2026 16:29:47 -0700 Received: from FMSMSX901.amr.corp.intel.com (10.18.126.90) by fmsmsx902.amr.corp.intel.com (10.18.126.91) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37; Fri, 24 Apr 2026 16:29:46 -0700 Received: from fmsedg903.ED.cps.intel.com (10.1.192.145) by FMSMSX901.amr.corp.intel.com (10.18.126.90) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37 via Frontend Transport; Fri, 24 Apr 2026 16:29:46 -0700 Received: from CO1PR03CU002.outbound.protection.outlook.com (52.101.46.20) by edgegateway.intel.com (192.55.55.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.37; Fri, 24 Apr 2026 16:29:45 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=L6xtZsZqauwmYYLFM4RugDppEs0zjnDZv6Mj1DWvzQCCa7dx+9yUYajjQ6dxsLi2OUykFrSg5mgGtd6Y6dWai9aLr9pGbeqqgcG082T1/1W5futdpF8zVOCECP3rITSFS1g87hrzbVaSpvohkLZ/WcSulQ+05e10zYR0S9ipShzE842V8ol6gUEDiHuU+l1JeqRIH3tCcb6K2bgNSha15KBBB2bxSdWuoRCDIHS+48tswOZbEBCBqA/jbpSCeZK3M0XWJylN+riJaLv53xDJTIcd/0k/Tu0IMkg+xqwZeD6C931umFv1BnVbp4vI/GTtp26oQPLxAATMjANO/Tw09w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=PQrJew8d+Gp3M3hvz+qmbAa7ZHNh/DWemSUWu6JMIxk=; b=RHarFMdQRh3so6fIXOdIl/ujn7mbamos7yv56t3Ftw7sFkY7eJKgvKMxPT/IP1tDtb7OJSaoQQ/bm4UosEkt3VatoGMXuS1u8hiP7Fsh5S99CBh0VhC340gF8niFfVKKGNpqpNDW7MxXqQAo2tOa8hu3EDxCJDraiRwPVkEiTVgpe8aOxwr01NSU21ekDjjAuBXk9p43F3RMVZEH2fOlQAQnFzA9AubQbxmIlFajjbw4nVr5MnCFIkKtpltV/zlJTPQQmhxhtQymF4OYABAx0JjW3qJyjY5Ix9igdgr2Zq0bGPl7XAe3ORdVylc2cCyc1aBrYIMKKkVjadNf0ZRZIg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from PH0PR11MB7588.namprd11.prod.outlook.com (2603:10b6:510:28b::16) by SA3PR11MB8003.namprd11.prod.outlook.com (2603:10b6:806:2f7::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9846.21; Fri, 24 Apr 2026 23:29:38 +0000 Received: from PH0PR11MB7588.namprd11.prod.outlook.com ([fe80::42ad:6451:1ae2:edd3]) by PH0PR11MB7588.namprd11.prod.outlook.com ([fe80::42ad:6451:1ae2:edd3%3]) with mapi id 15.20.9846.021; Fri, 24 Apr 2026 23:29:38 +0000 Message-ID: Date: Fri, 24 Apr 2026 16:29:37 -0700 User-Agent: Mozilla Thunderbird Subject: Re: further issues with MGA G200 graphics chipset To: Thomas Zimmermann , Jocelyn Falempe , "airlied@redhat.com" CC: , "linux-kernel@vger.kernel.org" , Pasi Vaananen References: <76aba88d-ec23-4b3c-ad91-83face0c3e94@intel.com> <6ec01703-31e0-4998-9508-a5a115ae7bc9@intel.com> <14aa4840-29c4-46df-b60d-8e1b92494ad2@redhat.com> <5155f29b-bc4d-4e60-9a26-22d568c43e46@redhat.com> <0be82b55-0f78-4ef9-8b50-f068ec36ec4f@suse.de> Content-Language: en-US From: Jacob Keller In-Reply-To: <0be82b55-0f78-4ef9-8b50-f068ec36ec4f@suse.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR03CA0079.namprd03.prod.outlook.com (2603:10b6:303:b6::24) To PH0PR11MB7588.namprd11.prod.outlook.com (2603:10b6:510:28b::16) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR11MB7588:EE_|SA3PR11MB8003:EE_ X-MS-Office365-Filtering-Correlation-Id: f67a88d5-1b0b-424d-5a64-08dea2595a65 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014|22082099003|56012099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PH0PR11MB7588.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(366016)(376014)(22082099003)(56012099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?VmVRR2VoS3lMWExBZHo3TW1lU2o0ZDlid2taRk8rZ2NOZnlzSm85Y2Mzc2Nw?= =?utf-8?B?RDhMMWNZTTRJRndxRDE0SFBsNE5pSTNoQVgreTVuMXVmeVo2enZHRXNXRGRD?= =?utf-8?B?bGxpR3NMdzlib1FaQ1BwRlk5UU9EeDNvWFFMeDhMTzVxbGFGYTJjODh2amtx?= =?utf-8?B?bFppdld0c3IrZUYrUDVvNUVIbUhjTHhkWHh2eDVDcjBvRXNUbjlBblJscDdt?= =?utf-8?B?UndQWURjM0dFZkwxSTgreXo1QjBzOTVZci9neXVLRGZ3eVc2bnNkOHNIYjNL?= =?utf-8?B?Rm5vT1lST2luTVI3Y254VWhsUUJ6R3daS1o2ZksrRGVlVzZqbllxcHVZV0hq?= =?utf-8?B?NDNWZ0YyK1ArdnE0V1BFY1ZnckIyS0NtQloxUld5aU0weEk5ck90WEk3MTc3?= =?utf-8?B?UHdlS2c1MWkwcTV6cWhPZHlka0x2YnRyY0RjNi9oUkxJNm0vNkp1SXhVd3ZT?= =?utf-8?B?OGtacWIveXZIT2ZvVDlpVjZRMGRFTWVhMWhSTVczN3dQRmdQOGRCV25GVCt2?= =?utf-8?B?TkJqUWFTc2lNbzJacVU4djlZdHlnSjEveTFaVHBJQVI5WXVnZVdWZjBDd0o2?= =?utf-8?B?aGZGenRLZVFXNkVicjBMaDgyTzRNSk5pQm1tZ2tVaTdmd20wQ1BUbzRoWnVt?= =?utf-8?B?SEs0cE1BbnFYRFRMQUVBKzBnZk5HRHhpaWVwZ3N0TERKanZ1WWw3dTV3d04w?= =?utf-8?B?UGU4UUsxaWhIYjhpTHcybXRYSGhVMCs0eC83T3RBV3NmV00xMitBdXBzVEMw?= =?utf-8?B?TEJ1aENQbjk2UGdzcG90RWhrUjFBa0pLaUlsd0FlS3V2OE44MFFITTRYTnB4?= =?utf-8?B?ZXVSd1pjc2U5M3VxMzFuSGIzTGllYlNWSHVsd0VTZTArdzBDVGQ2ZEhrd29v?= =?utf-8?B?R0Q1RWErS2ozb3NOUWF3WXdEbmN5UGJKbWlkaFpJZS94Y1YxbnU1dG9iZDJn?= =?utf-8?B?ZmtvNHM2ejZ2NHd0WVZmQXdrTmtEMFd5VGEybTUxdTUrMi9GZi8rbTRuejlX?= =?utf-8?B?VlluNWxZQ3ZkNHE0aWlKdzhIcnJzNEFUMzl4VDVqQVRlZzQraCsyTGw2OWFB?= =?utf-8?B?RjBEZE9RRjNCSng1azJNTFpqRW1vaVg1Nzhsc1B0eVNBbExUNnpoeWtHa21U?= =?utf-8?B?S09YNFh6Rnp4d0xBT0NsL2hQMXlGbURSa2I3WU1lbnQ4aEdOTWRQRC9XZk5k?= =?utf-8?B?RnFxb1g0Q1B1Uk53Ym5PcXdjalpxT0JNUVpCY2VLMDdlamVCTURjbXBtVE5G?= =?utf-8?B?QmpNL3ZmeFdwelZjN1pHVUVVZ01ubEpyVmdPeGozZXVpRVFWdEJreWJVOEd3?= =?utf-8?B?dWc5YmZudW5hdEVvWDd1SFhEd09TS1RmbnRBUk5pbnZaSGRKZUdnQkM4VDFX?= =?utf-8?B?TEdZUXFHSTd6eDVubGhNOGt5VmdIYURtZXV1SW5TQldybFpKKzFieVl5a2cw?= =?utf-8?B?VEkvZFdNQ2ZzME1WdGRROVBUVk9iSDFZaWRLUllvZ2NtV2hrSFNGeDBuMnZ6?= =?utf-8?B?bkJPd09mdlZsQjk3eGpsLzExZWViRXhlc2ZZYmpnbXhVRXJuL0RrQzFpNDl4?= =?utf-8?B?NmxrUHRQb1JSU2JMOWhhL1RtOHdad0ZWeTZmeDF0bnNBOGVYL2dES3haM3FE?= =?utf-8?B?b2lBRE9IditjQ0NvWFBZNG1zaFFWb0dCZWM3SFk5SkQxTE5tTlhNeDh5V0dV?= =?utf-8?B?cnMrbDQ1VG94dThSODZycnk5bjRrc05jSjZQcDZuVStReHZ2WjFaYzJDQ0c0?= =?utf-8?B?NnREbDRXTzBWdEhGc2hjWEVMZkd1QXhsL0srUVBxdW45ZUdXc05oc3lxelJB?= =?utf-8?B?SlFjU1ROdlk2dFVST3RXOFR6aittS29SbXArckxOWGJJamxBUk9LNVJLTlpy?= =?utf-8?B?aUF1U1VNQlBtMkFQVk1RbENtblhueGxUekdkd1VsVlp5RjNyM1h5VVpMRWVu?= =?utf-8?B?bzBLcFF1RnNVQWJkYXZWZFpwN0NES281dnJIV3RlQ3ZZR3lZR1hXZTVkZzFu?= =?utf-8?B?TDBEeVU3Vlp3VUVodWxlcTRvSXJZZDZPeFJQdlNyVjZQV3pHczlNNytRSFlV?= =?utf-8?B?cVlTZXIrZkVncVBHVm5FZGVjOUo3Qk4wYjIrUzl1QWhVQTFCRDlyVU8rcmRC?= =?utf-8?B?WnpGL3ZyeW9pS2RXL3cwa1RwQkNtcWM1cXlGdTVlYkkyNm9tL2d0M2FwWHRP?= =?utf-8?B?QkRQbkkybE1XS2xSdGF1V0dRMDNnd3NRRnF2U21pNHRrNTBvdGJNTytvR0la?= =?utf-8?B?MDBsZ1RlamtlelRaa2VzL0xadmxJNHdvdmZlV0l5cEtoZjlyRk1WOTBhVEpR?= =?utf-8?B?K3hWLzlGdlIzM2t1WlVrZk41OWdPNzJXaTBEK21XMnByTWZCNFNJUT09?= X-Exchange-RoutingPolicyChecked: Bs50+UIM76tOqQFeKPjYe5vDEAZECMcN1hDFfPC/nBAcsapBjh3Kh+40bASMOvvcFjBflhDaL9D3bEFb32+exPc2MUJhdQHquPOwYAd83XSkIN11iXkQoamdCOL/00HUPtL0khXqVJVokiS4GQ/0rhR8Aaa9RwS4OjJw6uXy8D4AC6AmhHC5E8TXE62UB/hWblgQ4I8y2FCYoJzFm7LgLYecOYddf/LcsS+VPGQKvokkJ+JfgS8xc8w3YN+eCTJnxsw+vjWcEiB8q9Qxo48IQ8RW/FjlxPn0xItHu4ghzfqWuOVvsR4Kq2LUdj47vkOSXoF0OXnFM/5/g5hxPOaL8A== X-MS-Exchange-CrossTenant-Network-Message-Id: f67a88d5-1b0b-424d-5a64-08dea2595a65 X-MS-Exchange-CrossTenant-AuthSource: PH0PR11MB7588.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2026 23:29:38.7429 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 8hRWm3zZ2MaKoWy0gL6K1GAvVtpDf3Tggw9jk3/JLJAYqFmLc2d4JxF/qdYizDLz/aCrhot1+k24yEPA2K+ZqvU4X2hAHJb9AUyEu+Whh/E= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR11MB8003 X-OriginatorOrg: intel.com On 4/24/2026 12:47 AM, Thomas Zimmermann wrote: > Hi Jocelyn > > Am 24.04.26 um 09:36 schrieb Jocelyn Falempe: >> On 24/04/2026 08:20, Thomas Zimmermann wrote: >>> Hi >>> >>> Am 23.04.26 um 21:42 schrieb Jacob Keller: >>> [...] >>>> Unfortunately, I also have no better idea than a DMI quirk table to >>>> record known platforms that include the controller but don't have a >>>> physical VGA connection exposed. >>> >>> I'm in favor of this. If you send a meaningful DMI identifier for >>> your system, I'd make you a patch for testing. >> >> I didn't find something related to VGA connector in dmidecode. >> My suggestion would be to use the chassis-type [1], and disable >> polling on Blade (0x1C and 0x1D) and Rack Mount (0x17) as they are >> less likely to have a real VGA monitor connected. >> My Dell T310, which is kind of a Tower, has a chassis-type of 0x11 >> "Main server chassis" so it might not be very reliable. > > This is the first time, I hear about this problem. I don't think it's > very common. And it appears only to be related due to cheap hardware > manufacturing. > > So I suggest to pick Manufacturer, Product, Version as key. I'd be > surprised if we find more than a hand full of systems with the issue. If > we see a trend or common pattern, we can generalize later on. > I think this is the best solution. Keep it focused for now. I believe Intel has two major platforms that we care about with respect to this issue. I'll see if I can dig up the data. The systems install the MGA G200 for BMC use but don't seem to expose the VGA connection. For the specific system I have that was faulty, we have the following: $ for t in system-manufacturer system-product-name system-version ; \ do dmidecode -s ${t}; \ done Dell Inc. PowerEdge XR8720t Not Specified I believe there was also some concern about HP systems which similarly use this chipset, but I don't have the DMI data for that one off hand. I've asked some colleagues to confirm the situation and obtain that data. I'll get back early next week if we think there are any other systems possibly affected. In the mean time, I'm happy to have our team test any patch to confirm that it behaves as expected and resolves the service interruptions. Appreciate all the feedback on this thread. Thanks, Jake