From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1728EC79F83 for ; Fri, 4 Sep 2026 06:39:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=3d3i5vsIWrW0LnXkTIgLG8qH4rN5A0QE4fwZ0GUTw5k=; b=e8kFUpEYcz5RsULanWBkcMWtY0 xSyrJGL7tacXYDGr7wMMuyWSS3wtCOS5aRWQSwoLmkFVXXGRPfvBr8DP6zQ+/0lRS+WGBOAD25m8d 1SqKc1TExRT2I/6zXBX7xJjXtjsWqVDTuP8iiVhWjbSy121wlR9jDanxfS75ZHGq0NJdh4lzL9PBY tSmrzrS2jrF3ESp6OmsdR+Pyw6waRqAuJcdxI4Q4+VhQJMKhuL++cnmz+xtLPPQjmsQ2DYIuCb4Mc dzHMSLLPAR8XAt/mTi9tgqkerSlhUWX5GJ63cuRFFnNizO96bUX0G3Kf6tEsL7E/F1d5yUracZxtH 7KzTfzQw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x2NZv-000000019JS-1EYC; Fri, 04 Sep 2026 06:39:11 +0000 Received: from out-5.mta0.migadu.com ([2001:41d0:1004:224b::5] helo=mta0.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x2NZs-000000019Id-0eWQ for linux-mediatek@lists.infradead.org; Fri, 04 Sep 2026 06:39:09 +0000 X-Envelope-To: linux-mediatek@lists.infradead.org DKIM-Signature: a=rsa-sha256; bh=YGvx98Tz2FML0LvjF/Dg0WhaeyNHH+kTPvoeQxEpaqE=; c=simple/simple; d=justthetip.ca; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1788503946; v=1; x=1789108746; b=t9uZ1IAPZDFqe1UQyWDPG0VoXwWLzSyJv0Y6ZqOswUvN+VdGUMPD2KZ8r82NiYGeCUtqxON1 hxZxyOgfZVt9x32Y2vZiPXFoVtxQ4sVZn6VU8uFAWWqRKPCoZdjm7li1zk5/cl0VcoeGzASQ9i0 vK2O2OZ1927KifoOoBrl46emPhyadgdHsT/BVCM16mWb1gb7kMal0ku0f7RzKz6uEYTUp5ghvvS 9rYPb09M7i/Qql50yCI49Of7v4erppoVX/WUyCKPgfNRp2mKrolOFgKfuwBvlBcQOpqMNVam89c 9qnVTn3JqN1YUuMN8TOd3Pbgay0YAg4S3N4h0fkRgVBgw== X-Envelope-To: linux-mediatek@lists.infradead.org Received: by smtp.migadu.com with ESMTPS id a199b6197a3cee6e; Fri, 04 Sep 2026 06:39:06 +0000 X-Mizu-Trace-ID: a199b6197a3cee6e X-Migadu-Flow: FLOW_OUT From: Devin Wittmayer To: Mario Stanski Jr Cc: linux-firmware@kernel.org, linux-wireless@vger.kernel.org, linux-mediatek@lists.infradead.org, regressions@lists.linux.dev, jb.tsai@mediatek.com, jwboyer@kernel.org, nbd@nbd.name, lorenzo@kernel.org, ryder.lee@mediatek.com, shayne.chen@mediatek.com, sean.wang@mediatek.com Subject: Re: [REGRESSION] mt7925e: firmware 20260813113118 causes severe low-RSSI 5 GHz loss Date: Thu, 3 Sep 2026 23:38:57 -0700 Message-ID: <20260904063857.55152-1-lucid_duck@justthetip.ca> X-Mailer: git-send-email 2.55.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260903_233908_530308_13CE416C X-CRM114-Status: UNSURE ( 8.44 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Thanks for the A/B, and for publishing the hashes. They made this quick to set up on my side. Unfortunately, try as I might, I cannot reproduce it. Same ASIC revision 79250000 and HW/SW 0x8a108a10 as yours, both firmware pairs hash-matched to the SHA-256s you gave, 5 GHz at -70 to -79 dBm against a WPA2 AP on 5765. Eight arms: two in-tree kernels, an out-of-tree mt76 from 30 August so the driver is 7.3 era, power save off to match yours, idle and loaded, and a ten minute soak with a continuous pull underneath. gateway packet loss 0% in every arm, roughly 1000 packets gateway rtt 11 to 121 ms average 1 MB HTTPS probes 3 of 3 completed in every arm 25 MB pull 1.4 to 2.05 MB/s None of that argues with your result. You held everything but the blobs and got a clean separation, and I would trust that over my negative. What it does suggest is that the firmware on its own is not enough on this silicon at this signal, so the rest of it is in what I could not match. Your board is an AMD RZ717, 14c3:0717, where mine is an AzureWave 14c3:7925. Your regulatory domain is BR, where mine is pinned to CA by the AP's country IE. Your link is VHT40 on 5805 and mine is HE on 5765. If anyone else on an RZ717 has seen this, that would narrow it quickly. Devin