From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from BN1PR04CU002.outbound.protection.outlook.com (mail-eastus2azon11010014.outbound.protection.outlook.com [52.101.56.14]) (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 5F62659572D; Thu, 15 Oct 2026 20:26:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.56.14 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792096001; cv=fail; b=QxzAzSDAP2WM96A5xS7VMwNzAGeXdy4Mj3QfGkQy7kVsu+9dQK+npeph89dKEeYzbedsjNdVV0bPva7JGB24IOTMCdZmt/66Tcod2NFk1SoMKjH0cNflAOTZWkrwyushjcgC+n/ZHN8fTkJgqTp6CoHwg6k0O4Qf+mzthgGm02s= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792096001; c=relaxed/simple; bh=ExhHwLz6Khe8J2uOqvCuquuPAzKAf5bfL+JbJ/Fp0es=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=mH5efpW1uFsCM8powh54O8YWqYOuy8ZCCbjFeLtmn+cyWaNj6QE2Qe2Gb1bqAJlzOIcel/bjKIWcIQYsaKrDtr6GduvWmUwK8NcyiTPRZvGGlMB3KJBT2CG5pKJWYGIimU991XN94n7Zl5qrQmEuQNpYWNZfz23jSgw4K+yHbNc= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=cw6/p9wM; arc=fail smtp.client-ip=52.101.56.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="cw6/p9wM" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=R3qjF4AtuIHXbsoRUAZCS3xrKl6vWXlVJE+g70E9QhbKbfBsdCnX5oL23iexnYPVLJs+d2BFQdkyga6Kbh61rvdWrNWeP0aKkWijfN85tAUdud5PSncux9pvGfR7zbq8BxrdeKJO6PrZC7Qz+1xpjoU0OImtgmSjEM0J8IFgFxBynN+yiTurq4ZyRD3rPhfBhWK5MGb0w4Y16Yg7plguBJDnV6bJz7JkTh/CJX5dtL7OZCdBE+3lDBSKRYZbgrdkBGDe+El673/rVRvbZRK9XM28Tq8hPXbEIFEo04XyqpRfQ5qHxURK5UdKetken4g48vo0nwny/7Ts0zAqorwVTg== 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=P+SPFmP0z4+Q/+Ek800KBpkDJ+a3G11/sNqqo5OZp5U=; b=CsSENCzim5ewW5QM/x50KeVKAV2glO33LEIQlLHH3ykDXNy4eTMbNxWUTVMH16NJhQjIWUwQ738D6TTXnP9jaHSRN5RolEpmbu27vNh1P2kI05ZCG+1iKERstG3rzYo4Fao2SHVAAj71i74vneQav++hTBo6RzlAUB4gjETSm+mknN6tAhi7xRxxIU4UKWlQdpSh0PPbvzqriE5BG/UYpFOH6Qnp7XEyNhgxN6oPuaXYZ2KcbhyYSxvv8z9C5KJEfCd1Yl7xEyN2lIgVX653Win4bSmtrwsC3Lyib5eASi46V8vTT8dSncq8AdlvLjRHbmgMBDX2LJFr4bfV3qpjzA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=P+SPFmP0z4+Q/+Ek800KBpkDJ+a3G11/sNqqo5OZp5U=; b=cw6/p9wMedKUiZajyWhQKcPxbiAFE1cdDtnbVkLjycyX2BTQJyAiLLGqaq6vTA3+2Igtcpzpld4dKr9oEG1gICaMpr5w/GgxaJS1Jpvxvr2ok1S8tg9oxPJ091G9EUBTU9nm4K09y6P6qkpQQIc0pc+wvd+9ELKc7ahkr3fNHqo= Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from PH8PR12MB6914.namprd12.prod.outlook.com (2603:10b6:510:1cb::21) by DS0PR12MB8785.namprd12.prod.outlook.com (2603:10b6:8:14c::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.24; Thu, 15 Oct 2026 20:26:31 +0000 Received: from PH8PR12MB6914.namprd12.prod.outlook.com ([fe80::2893:177a:72b0:6000]) by PH8PR12MB6914.namprd12.prod.outlook.com ([fe80::2893:177a:72b0:6000%7]) with mapi id 15.21.0522.012; Thu, 15 Oct 2026 20:26:31 +0000 Message-ID: <8a94b2bd-70ae-405e-ab01-2a0d37dcc551@amd.com> Date: Thu, 15 Oct 2026 15:26:28 -0500 User-Agent: Mozilla Thunderbird Subject: Re: ThinkPad L13 Gen 2 AMD (21AB): Caps Lock LED broken by ACPI GPIO 11 interrupt conflict Content-Language: en-US To: Nikodem Sanecki , Mark Pearson Cc: Andy Shevchenko , Abduvaliy Abdulazizov , Dmitry Torokhov , Mika Westerberg , linux-gpio@vger.kernel.org, "linux-acpi@vger.kernel.org" , linux-kernel@vger.kernel.org References: <51c151fd-31cb-4ebe-8f3b-eb7634e68c31@amd.com> <4ba482fe-8b34-48ad-9d13-99ab532cbd97@app.fastmail.com> From: Mario Limonciello In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: BN0PR04CA0111.namprd04.prod.outlook.com (2603:10b6:408:ec::26) To PH8PR12MB6914.namprd12.prod.outlook.com (2603:10b6:510:1cb::21) 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: PH8PR12MB6914:EE_|DS0PR12MB8785:EE_ X-MS-Office365-Filtering-Correlation-Id: 0bbac3f2-7129-45eb-de14-08df2afa9984 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|23010399003|1800799024|5023799004|10067099003|3023799007|22082099003|261009223027099003|11063799006|6133799003|56012099006|18002099003|4143699003; X-Microsoft-Antispam-Message-Info: ruJqq20Zt5PvVNfKRe+ORMtcN7ZyqjxWMURfaUIeZ3b6xRwRJ1DO9Y/0JfvjC3DnryLZwzcbEMQ9A00GvkhMmkcfaLtKJUbFsk1+Dfq0dU7c1e7lsWDjT6fO9xL1TqVaT6vEq0O35dvwXOqbpSMC9bpuxkYelGs3UGv/mL39sjuapdySU7JHzrNjRAmYBEe0wZAW2nZE8LQwk0NQFsbQaFFRFAIV4VbGtxBqN/0ewBTJBVOVr4Rjr+32D/jz+rpVrBkJ6tkiRR1Q8+xV+XRriu/RnCNAa0dA72m362vMorS7pZFUGC1UdxXn3Nuipw6Y05RP3PMNKHqrkkf17BrslrPzMRCh6RlScPf7DVxtcpJN7R/78jxNaNnF6HeFqoxc+sYewNxC3dA2Cn4gr0EMMegNVa7d1eUHdSUf89f3ilQ5oHMzA/3s1R0j6rQ44BJ5cRJzfPBjdC6TqdKyIKozUmATyFTOR3wVMR30WuCr4272NQCt/DAz4pyyD6JLwSMkXc5TyO2wb6Ks2Hq+XHFuBnLh9wReJQztiGqQNJzzeG/dQwnvLxYZlh5i7Ti4OUtjhz19/YLnkG/QH5QFThc2qm0sB3yE7RCXR4bGSMDgYC6nsDCjuhkkD54GLqI38mpX X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PH8PR12MB6914.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(366016)(23010399003)(1800799024)(5023799004)(10067099003)(3023799007)(22082099003)(261009223027099003)(11063799006)(6133799003)(56012099006)(18002099003)(4143699003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?MUovZEJrcVBsaitXSktsczR5MlF3VkRTVFBHZ0hoZncrd1htUzlZbUtUSFVl?= =?utf-8?B?azJNQndNNEY0VXpSaTFHeUttNDJ6UXNENC9CMW1pczFacHhNRkZTcUxVSkUx?= =?utf-8?B?d3UxNjdtcjFabU9nMndpR051V3RWVGdWT3RZSDM2OEZKazZNUW1vRGsvUFpK?= =?utf-8?B?T1JmbXVscmpKQ3VzM0NMY0VxM3F1ay9KNWRUSEFzSEJDdlNTUHZWVWhzdzBz?= =?utf-8?B?dVRvZk9OTTVqeWZuMTZnanVmUzJHOFBDajV3OGVrNlB2R0dPdmhpTGIwWVpt?= =?utf-8?B?bnZ3a3NhQ0NxeXM4U0d3eFA4bDB0WHBocHBXMktJbnQrZGtJWldMcHUycUQ3?= =?utf-8?B?ME44eXNNbVFhUWdHOXk2bnpZL3VCUU5mZ2JDQXpNa3J5cVgyZWZuQk5XR3JM?= =?utf-8?B?SFdmNGRNUjd1WG1RSFpoQThab1Y1dVlMSVNhQ2NpczQvckVEb29BYlZUMVM3?= =?utf-8?B?T0N1ZEJ1SEVqSGNROWVpb1lTNkc0UE9KQVJjRE5SY21aVnJyS3lnY2o5TjZU?= =?utf-8?B?aXN3MUxvYXZxTG01OUVsNzB5a1VsWEIyYlZMc0ZDQXNyaGxKald1Mkx6K0Fj?= =?utf-8?B?cittOWI5SmtGYVVib3BZdGtnU0tJbGJnOVlCYUxpZzRRcDFkVHZYQTFUYUVj?= =?utf-8?B?S2NUSno4TlpJUnJiVVpObUpMOTFpTXEvZDg2WTVhcVJnQ0ljQ25ZVUcwcVdK?= =?utf-8?B?UHFaRW0yT2VScU52a3UzclBFQ1k2UkpkbUx2TVdld0FUY3pBM1k5UzhMTis1?= =?utf-8?B?ejhPVVRkNFJHdTFJcXlZZ0N2K2FCck1aSmtwRGkyanlsMXhmWHpVRDE2cGpI?= =?utf-8?B?Yk80YS81eTR3dFFnUmZ2bG92RGwrUnM3WElsSlA1UTY3Y0U0SVllQktPeng5?= =?utf-8?B?amlqR2JJUWVZNzd0NXAvU3ZiSktoVUpsRElSckFSa1BxTEFMemtDcko2QXlB?= =?utf-8?B?L24rYTFRek5YNjQwM3ozSU5GaXdBY2diSWt0Zm1zbGpRVDZNdUhQWFJFOXgr?= =?utf-8?B?dlY1ZDhMQXVrT1NGNFYrRUhBZkY2VHBhdlU2a0RDcUtXczNkWC9JRVdCcHUy?= =?utf-8?B?aUE1dGM2VXlXNFNqeVVYZGpjYzdhdGNLZk4waVhlcEorbEs2WXh5QSsxTWoy?= =?utf-8?B?K2txZ3I5R2thbDlPbUEyK2oyYll0WHhGVGtsREhJV3pOV042OVNVa0czYS9T?= =?utf-8?B?c1AwYW1nRWlNeVhQUXVWNTFyM0M2QjRocjlwYmZQZDJNOUJ6Rmc5dnFDYVJj?= =?utf-8?B?MEdzWGRWY2pqQWdiWUkrZmhKcW9sWWV0TkJsQVRQRGZsTGU4RUg2WGhqQ01G?= =?utf-8?B?ZGF0eFN1bVlvUGlrb1h0N3l5cE9IQlphNXRNRlNjeVBlYlp0ZVMvUGVXb3BL?= =?utf-8?B?cFNDMlB0Mm9BYitST2I5T2lKREJxYzZ1MFoyVEQ0bk8zZkpMWDcvdjlSRUVC?= =?utf-8?B?Z1M5YWZ3ZmdRRndRa3Iya0hzcnR6cjh0ZnNGeTRIVGFpbDJqTjZheGpqTG5m?= =?utf-8?B?bUluZzBsSXpZU09ZY2Nrb2pvc29UZ3p1TmtwcDdSY0xFUFZTSkJGRTZHazNh?= =?utf-8?B?RWhTTUhpM2ozY3c5dG5aWG85RUZCbklxWDlQa3VsSkttenV0TWUxWjQ2aE5Z?= =?utf-8?B?SnV0MlZqUTE4dXk1TVU2VjM0bTFBWlhKRWlpQWhGb2lsSlVVZHZmUisrR0Ja?= =?utf-8?B?RVY4STU1ckRFSlBiMnp2d1lNY0pPUlF6T2RGT1RldVRYL0RSSVFWYno5Uzln?= =?utf-8?B?QU5nUi85NmxHV3RLcUkzNjM1L2E5VXhwREpsVE1sRWtqS05wY1d0QWtpZnZx?= =?utf-8?B?ODdSZXNRNm9oNnZtTkRsNnFpRzR2cW1nWGNYenNWSVlzYW9lN1JYeXk4SVMw?= =?utf-8?B?WTd5N3FESEZrQ3hBVGVFSnZxNE5YQVFaN1d3Nm90d0VuSmxlN0lxR3RYYW8z?= =?utf-8?B?WlY2OWVmZnRLSzU2QU5aK2RpQ0VnN3NENmJXcHRiU2Z5SldKUWxKMVlTMGR5?= =?utf-8?B?eWtQcEVFZjNaUjk0bStqeHJqY2Y1Wk5RQXdmOE9lMVpvc2FQWTY2QXVRSzFI?= =?utf-8?B?dFRpVXdERjFyVExPUXNVY2J3RU42bGlWODlMV0hTT245T2V0TnI1TCtQOGMw?= =?utf-8?B?T0RaVzMzK3FTTTZDbW80WmJ5bGM0b3hySklxYzlNSFg2bzRKUFR4cGIwRkZS?= =?utf-8?B?c1dmMXhEZC93dEZlL1g2aTlUaVd1UU9BRW5ZUkR5K1FQNTFKS2t4VzJQTU90?= =?utf-8?B?UTc1b0NBSUhSSG1acWovU2pTTHFsb1ZQTkdRUnlMSFEwTklRVWd2TU51clcy?= =?utf-8?B?ZDRkWWNXR3YzYTdTT2h5MC9ZNzVGa2wzTUVRQXE5WGlIUFlUT3Frdz09?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0bbac3f2-7129-45eb-de14-08df2afa9984 X-MS-Exchange-CrossTenant-AuthSource: PH8PR12MB6914.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Oct 2026 20:26:31.7080 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: XJzhe1vskWaWQvnrj/XVtauaEdz/o/xcZW6GUmzQTt9+f6UvITlfVB6AHQy0JU6RA8wU+BE/3UPUd9DK3/Kb1A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB8785 On 10/15/26 15:13, Nikodem Sanecki wrote: > Thank you for looking into this. > > I've checked Lenovo's website. My installed BIOS is R1QET54W (1.40), > which matches the latest advertised version. The version history on > their website appears inconsistent, though. > OK thanks. > I also have the sanitised ACPI excerpts and diagnostic logs ready. > Given that a patch has now been submitted, would a kernel Bugzilla > report with these artifacts still be useful? Yes; we should still have the artifacts somewhere. We can close the bug completed but add a Link: to the patch. > > Happy to help with any further testing. Can you please test the patch I CC'ed you on? https://lore.kernel.org/linux-gpio/20261015193924.4081906-1-mario.limonciello@amd.com/ > > Thanks, > Nikodem > > On Thu, Oct 15, 2026 at 8:25 PM Mark Pearson wrote: >> >> >> On Thu, Oct 15, 2026, at 2:48 PM, Mario Limonciello wrote: >>> On 10/15/26 13:31, Andy Shevchenko wrote: >>>> On Thu, Oct 15, 2026 at 09:25:10PM +0300, Andy Shevchenko wrote: >>>>> +Cc: Dmitry (as it might be related to keyboard configuration), others for >>>>> the previously reported same IRQ on the same GPIO controller but for some >>>>> camera stuff. >>>>> >>>>> On Thu, Oct 15, 2026 at 03:13:02PM +0100, Nikodem Sanecki wrote: >>>>>> Hello, >>>>>> >>>>>> I'm reporting a Caps Lock LED issue on my Lenovo ThinkPad L13 Gen 2 AMD >>>>>> running Arch Linux. I found a workaround that completely fixes it, and I >>>>>> hope the findings might help implement a permanent kernel fix. >>>>>> >>>>>> *A quick note:* This is my first time using Linux, and I'm a complete >>>>>> beginner when it comes to kernel development. I used ChatGPT (GPT-6) to >>>>>> guide the troubleshooting process, analyse my laptop's ACPI firmware, and >>>>>> interpret the results. I personally ran the diagnostic commands and >>>>>> verified the observed behaviour, but the technical explanation below is >>>>>> AI-assisted. Please correct me if any of the analysis is inaccurate. >>>>>> Problem >>>>>> >>>>>> Under Linux, the physical Caps Lock indicator LED never illuminates, even >>>>>> though the Caps Lock key itself works normally. >>>>>> >>>>>> The LED works correctly under Windows and during certain stages of boot, so >>>>>> the hardware itself is functional. >>>>>> >>>>>> After investigating, GPT-6 identified what appears to be a conflict >>>>>> involving GPIO 11 on the AMD AMDI0030 controller. >>>>>> >>>>>> Booting Arch Linux with this kernel parameter completely fixes the problem: >>>>>> >>>>>> gpiolib_acpi.ignore_interrupt=AMDI0030:00@11 >>>>>> >>>>>> The Caps Lock LED now works normally, and I haven't noticed any other >>>>>> hardware issues. >>>>>> System information >>>>>> >>>>>> - >>>>>> >>>>>> Device: Lenovo ThinkPad L13 Gen 2 AMD >>>>>> - >>>>>> >>>>>> DMI product name: 21AB004LSP >>>>>> - >>>>>> >>>>>> DMI product version/family: ThinkPad L13 Gen 2a >>>>>> - >>>>>> >>>>>> DMI vendor: LENOVO >>>>>> - >>>>>> >>>>>> DMI product SKU: LENOVO_MT_21AB_BU_Think_FM_ThinkPad L13 Gen 2a >>>>>> - >>>>>> >>>>>> Kernel: 7.2.9-arch1-1 >>>>>> - >>>>>> >>>>>> Distribution: Arch Linux >>>>>> - >>>>>> >>>>>> BIOS: R1QET54W (1.40) >>>>>> - >>>>>> >>>>>> BIOS date: 2026-04-14 >>>>>> - >>>>>> >>>>>> DSDT OEM ID: LENOVO >>>>>> - >>>>>> >>>>>> DSDT OEM Table ID: TP-R1Q >>>>>> >>>>>> Diagnostic findings >>>>>> >>>>>> The following is GPT-6's analysis of the diagnostic output and decompiled >>>>>> ACPI tables. >>>>>> >>>>>> *1. Linux sends the correct keyboard LED commands* >>>>>> >>>>>> Using bpftrace, we observed that atkbd_set_leds() consistently returned 0. >>>>>> >>>>>> Tracing ps2_command() for command 0x10ED produced: >>>>>> >>>>>> SETLEDS: value=4, caps=1 >>>>>> SETLEDS: value=0, caps=0 >>>>>> SETLEDS: value=4, caps=1 >>>>>> SETLEDS: value=0, caps=0 >>>>>> >>>>>> The driver reports success and sends the expected Caps Lock states, but the >>>>>> physical indicator stays off. >>>>>> >>>>>> *2. The embedded controller tracks Caps Lock correctly* >>>>>> >>>>>> The DSDT defines the CPLS field at EC offset 0x0F, bit 7. >>>>>> >>>>>> Reading that byte through the read-only ec_sys interface showed it changing >>>>>> from 0x00 to 0x80 when Caps Lock was toggled. >>>>>> >>>>>> Enabling dynamic debugging in drivers/acpi/ec.c confirmed that each Caps >>>>>> Lock press triggered EC query 0x78, which was scheduled, started and >>>>>> stopped successfully. >>>>>> >>>>>> *3. Lenovo's firmware controls GPIO 11* >>>>>> >>>>>> The DSDT contains: >>>>>> >>>>>> Method (_Q78, 0, NotSerialized) >>>>>> { >>>>>> If (CPLS) >>>>>> { >>>>>> WFIO (0x0B, 0x00) >>>>>> } >>>>>> Else >>>>>> { >>>>>> WFIO (0x0B, 0x01) >>>>>> } >>>>>> } >>>>>> >>>>>> The WFIO method writes bit 22 using WMEM(), targeting address 0xFED81500 + >>>>>> (11 * 4) = 0xFED8152C. >>>>>> >>>>>> This appears to control the Caps Lock indicator using GPIO 11. >>>>>> >>>>>> *4. The same GPIO is declared as an ACPI interrupt* >>>>>> >>>>>> In SSDT12, _SB.GPIO._AEI declares GPIO 11 as an edge-triggered, active-low, >>>>>> exclusive wake interrupt. >>>>>> >>>>>> Its _EVT handler includes: >>>>>> >>>>>> Case (0x0B) >>>>>> { >>>>>> MSTP (0x3911) >>>>>> Notify (\_SB.PCI0.GPP1, 0x00) // Bus Check >>>> >>>> This looks like some GPIO related notification. I dunno what Windows driver does. >>>> Mario? >>>> >>> >>> Honestly - this sounds like a copy / paste BIOS bug that they copied the >>> SSDT from one system and didn't change it. >>> >>> I would think quirking it makes sense if the BIOS isn't going to be fixed. >>> >>> Before we go much further can you check if this is the latest BIOS? >>> Check Lenovo's website, in case it wasn't brought to LVFS. >>> >>> Also; Mark can you ask BIOS guys to look this over? >>> >>> It sure seems like GPIO 11 shouldn't be in _AEI. >>> >> Yep - created internal ticket LO-4711 >> Just a note though - the platform was not in the Linux program (and is rather old) - so my expectations of getting a fix is rather low I'm afraid >> >> I'd get the quirk ready, and if I don't get any feedback from the FW team by next week go ahead with that. >> >> Mark