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Sun, 03 May 2026 00:26:26 -0700 (PDT) Received: from archlinux ([2405:201:1b:225f:bfac:abd3:86cf:47a3]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-83515b4b371sm7263017b3a.49.2026.05.03.00.26.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 May 2026 00:26:26 -0700 (PDT) Date: Sun, 3 May 2026 12:56:22 +0530 From: Krishna Chomal To: yue li Cc: platform-driver-x86@vger.kernel.org Subject: Re: [REGRESSION] hp-wmi fails to probe on HP OMEN (board 8D41) Message-ID: References: Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline In-Reply-To: On Thu, Apr 30, 2026 at 12:59:58PM +0800, yue li wrote: >Hi, > >I am reporting a regression in the hp-wmi driver on an HP OMEN laptop. > >System: > >Vendor: HP >Product: OMEN MAX Gaming Laptop 16-ah0089TX >Board: 8D41 >BIOS: F.12 >Kernel: 7.0.2-zen1-1-zen > >Regression: >The hp-wmi driver works correctly on kernel 6.18.6-zen1-1-zen, >but fails to probe on 7.0.2-zen1-1-zen with error -22. > >Issue: >On the affected kernel, loading the module fails: > >modprobe: ERROR: could not insert 'hp_wmi': No such device > >dmesg output: > >hp_wmi: Unknown EC layout for board 8D41. Thermal profile readback >will be disabled. >hp-wmi hp-wmi: probe with driver hp-wmi failed with error -22 > >The system exposes the expected WMI GUIDs: > >5FB7F034-2C63-45E9-BE91-3D44E2C707E4 >95F24279-4D7B-4334-9387-ACCDC67EF61C > >This suggests the driver matches the device, but fails during probe due to >the unknown EC layout. > >Question: >Is this board expected to be supported? If not, would it be acceptable to >allow the driver to load in a degraded mode instead of failing probe? > >Please let me know if additional logs or testing are required. > >Thanks. Hi Yue Li, Thanks for reporting. This is a known issue [1]. There are 2 failures in your dmesg output: 1. Unknown EC layout: The fix for this has been sent recently. Currently, it is in the review-ilpo-fixes branch [2]. 2. Probe failed: This is due to a failure in parsing the fan table. The fix for this has been merged into 7.1-rc1 [3]. Using kernel 7.1 (or applying the above mentioned 2 patch manually to your current build) should restore full support for your device. Thanks, and apologies for the inconvenience. [1] https://lore.kernel.org/platform-driver-x86/4ae4d7f9-f1db-4394-b0d9-c75dc39afcf8@gmail.com [2] https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/commit/?h=review-ilpo-fixes&id=c2d4b76458c9ebf81eae2916970320f1f61ad002 [3] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/platform/x86/hp/hp-wmi.c?h=v7.1-rc1&id=9d317a54e46d3b6420567dc5b63e9d7ff5c064a3