From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 7CFD4337BA4 for ; Tue, 21 Jul 2026 02:37:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784601453; cv=none; b=o/UvnqN9TOajHlQEmzwuD10X1Z0XRVybxA2NK3zd0uE0sIDM/c/sk6pdZBJJeu1AZdjZJ0TJ3FGtYDNCx0ea1hGaSP1tWSvfOn2FppgLYV6dyOhQyBMzU/RxCTII9/hsNhK4JD3Bd7rhHi6BoL9kmnzmI62pvF47oSFEPmceKFw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784601453; c=relaxed/simple; bh=YPHIRcZFVd1ZTbWy0aEMivVzLYxDadsIeBzvmAwz7ZQ=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=JB020yMEwRXBeA09jF+Ozgx9Wr2eKXHv2+9mYrNSK3NUcuBYE++lC4d9IwZHGTTBOBljh6Qr8QC/ly2cw1XDJZhLxGs2OeLK6ryzKerHuliNNUzkBbsfyhm17M7zP1PRJeosO+H3qGcrfUuiyOb+epnd4osU8rhmnnNLVH5tADM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lf4oSKvy; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lf4oSKvy" Received: by smtp.kernel.org (Postfix) with ESMTPS id 0ACCCC2BCB8 for ; Tue, 21 Jul 2026 02:37:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1784601453; bh=YPHIRcZFVd1ZTbWy0aEMivVzLYxDadsIeBzvmAwz7ZQ=; h=From:To:Subject:Date:From; b=lf4oSKvyDjZvZvK19vdX56AsXtJHmTa9XmYu1j+9svkWMbhS55t9Au9txEzeTG2Qs oDl/7pXu0GuMBt4kvQ5Zdh9XMUNdKYS4p5HkaeVNIbhXRwIESls8bbHgVpgcoKKKbB vl1ViBdSudCmlvTvn1Y/J4JsAtjHTREGN9EgEEl4V0T1sEW2HkPEid6WWAHQrw45HE /UPlFWWQ+X9QAyEpY3FY1fg0g7tzrUzyWTsrw6r+RsL0vUfbmyvR0+OBaOlDe2Nwyv 77sCH9yN5A/tp49EKXvhkhhnhzgOKSMnWLOyqtFnkAxkuZNYz+svxq6Vn6UAvEICPr P6cFTzKapyWDw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id DA220C433E1; Tue, 21 Jul 2026 02:37:32 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 221774] New: hid-multitouch: report ID mismatch check breaks touchpad palm detection on ASUS ROG Flow Z13 (2025) GZ302EA (0b05:1a30) Date: Tue, 21 Jul 2026 02:37:32 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: mayhemandcoffee@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221774 Bug ID: 221774 Summary: hid-multitouch: report ID mismatch check breaks touchpad palm detection on ASUS ROG Flow Z13 (2025) GZ302EA (0b05:1a30) Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: USB Assignee: drivers_usb@kernel-bugs.kernel.org Reporter: mayhemandcoffee@gmail.com Regression: No Created attachment 310482 --> https://bugzilla.kernel.org/attachment.cgi?id=3D310482&action=3Dedit touch registers while typing Component: Drivers / Input Devices (or USB, whichever's closest) Kernel Version: 7.1.4-arch1-1 (regression); confirmed working on 6.18.39-1-= lts Description: On the ASUS ROG Flow Z13 (2025), model GZ302EA, the detachable keyboard cov= er's touchpad (USB 0b05:1a30) loses its onboard palm-detection capability on ker= nels containing commit e716edafedad4952fe3a4a273d2e039a84e8681a ("HID: multitouc= h: Check to ensure report responses match the request"). dmesg shows: hid-multitouch 0003:0B05:1A30.0004: Returned feature report did not match t= he request Effect: the touchpad falls back to a legacy single-touch-style report =E2= =80=94 missing ABS_MT_SLOT, ABS_MT_TOOL_TYPE, and multi-finger BTN_TOOL_* capabilities =E2= =80=94 instead of the full Precision Touchpad protocol. This means palm rejection stops working entirely in userspace (libinput has no tool-type/slot data to reject a palm contact with). Working baseline: on linux-lts 6.18.39 (predates the commit), evtest on the touchpad node shows the full protocol, including ABS_MT_TOOL_TYPE correctly reporting value 2 (MT_TOOL_PALM) when a palm contact is detected, and 0 (MT_TOOL_FINGER) for normal touches. Suspected root cause: in mt_feature_mapping(), the vendor-specific usage 0xff0000c5 triggers a mt_get_feature() call described in the driver source = as "Retrieve the Win8 blob once to enable some devices." This device's firmware appears to respond to that specific GET_FEATURE request with a mismatched report ID, causing the new check to goto free and abort before the device g= ets switched into its full-capability reporting mode. Steps to reproduce: Boot a kernel containing commit e716edafedad4952fe3a4a273d2e039a84e8681a sudo evtest on the touchpad's /dev/input/eventN node Observe missing ABS_MT_SLOT / ABS_MT_TOOL_TYPE in the capabilities list, and dmesg | grep hid-multitouch showing the mismatch error Requested fix: a vendor/product-ID based quirk in hid-multitouch.c (similar= to the existing MT_CLS_ASUS handling) to bypass or tolerate the report-ID mism= atch for 0b05:1a30, restoring the device to full-capability mode. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=