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b=pFVFBLt9VsBxouefVQEFrsHGCc43GS2iD/zlSoURqCqZ8USxoMVg4PaOtpr6Oe5ea0H8RKK++9KEhvoJyk12soRH08NgqKJciZSKlz7zrfz1F/wLxnbKdy3c2yJadEz3vULyirSz4Lc0RuaKymFx2L/eWREfyOidTBIA+6BS2eU= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from SA0PR12MB4557.namprd12.prod.outlook.com (2603:10b6:806:9d::10) by MN2PR12MB4206.namprd12.prod.outlook.com (2603:10b6:208:1d5::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.10; Fri, 27 Mar 2026 16:52:36 +0000 Received: from SA0PR12MB4557.namprd12.prod.outlook.com ([fe80::885a:79b3:8288:287]) by SA0PR12MB4557.namprd12.prod.outlook.com ([fe80::885a:79b3:8288:287%5]) with mapi id 15.20.9769.009; Fri, 27 Mar 2026 16:52:36 +0000 Message-ID: <8cd14428-24a9-45fd-9286-9d9f142b32b1@amd.com> Date: Fri, 27 Mar 2026 11:52:33 -0500 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] ALSA: hda/intel: Add MSI X870E Tomahawk to denylist by DMI ID To: Takashi Iwai Cc: Stuart Hayhurst , linux-sound@vger.kernel.org, Takashi Iwai , linux-kernel@vger.kernel.org, Jaroslav Kysela References: <20260327155737.21818-2-stuart.a.hayhurst@gmail.com> <05e1cb0a-18f0-412f-87c6-99319b18af52@amd.com> <87zf3tp6p4.wl-tiwai@suse.de> Content-Language: en-US From: Mario Limonciello In-Reply-To: <87zf3tp6p4.wl-tiwai@suse.de> Content-Type: text/plain; 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There are obviously designs out there like this, should the >> ERR message be simmered down? > > Although HD-audio is a bus that can be dynamically enabled / disabled > codecs, it's been supposed to be rather static and exposed only if > there is really a need for it -- that is, only if there is a codec on > it. So "no codec" is seen as an error for now if you try to > initialize the HD-audio controller. > > We may downgrade it, but the situation is still not ideal either; the > driver is still bound without serving anything useful, and it needs to > react for the PM and other things. Since the probe of codecs happens > after the driver probe stage, the driver can't go away by itself, > unfortunately. > > > thanks, > > Takashi I guess in an ideal world systems like this (where physically there is USB audio and HD audio, but HD audio has no codecs connected to it) the BIOS should avoid exposing the HD audio device on the PCI bus. Stuart, In parallel could you try spinning up a thread with your MB vendor? If they're willing, maybe a future BIOS can also stop exposing the HD audio PCI device. If you end up having a good experience that could be the way we approach this problem in the future.