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Thu, 28 Jan 2021 14:39:57 -0800 (PST) X-Google-Smtp-Source: ABdhPJzcaTSXcL4AYZdldj4cezSvP2lg+1lhTtXjvAHJFF8aCcJcvdASnKcaPNsTC8bU8dAa7/nETQ== X-Received: by 2002:a02:cc43:: with SMTP id i3mr1266647jaq.58.1611873597445; Thu, 28 Jan 2021 14:39:57 -0800 (PST) Received: from chargestone-cave ([2607:9000:0:57::8e]) by smtp.gmail.com with ESMTPSA id j7sm2822590ilo.52.2021.01.28.14.39.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Jan 2021 14:39:56 -0800 (PST) Date: Thu, 28 Jan 2021 16:39:50 -0600 From: Michael Catanzaro Subject: [REGRESSION] "ALSA: HDA: Early Forbid of runtime PM" broke my laptop's internal audio To: alsa-devel@alsa-project.org, Jaroslav Kysela , Takashi Iwai , Harsha Priya Message-Id: X-Mailer: geary/3.38.1 MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mcatanzaro@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii; format=flowed X-Mailman-Approved-At: Fri, 29 Jan 2021 16:10:20 +0100 Cc: linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Hi, On my System76 Gazelle Pro (gazp9) laptop, internal audio broke after upgrading to kernel 5.10. The laptop's speakers produce no sound. Audio from headphones still works fine. A quick test is to visit GNOME System Settings -> Sound -> Output, select Test, click Front Left or Front Right and notice there is no sound. I tested a mainline kernel revision from yesterday (5.11-rc5+) and the regression is not yet fixed. I bisected the regression to "ALSA: HDA: Early Forbid of runtime PM": https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a0645daf16101bb9a6d87598c17e9a8b7bd60ea7 I created a downstream bug report here, including some bits from dmesg that may or may not be relevant in comment #2: https://bugzilla.redhat.com/show_bug.cgi?id=1918933 Audio devices: $ lspci | grep -i audio 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06) 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05) OS: Fedora 33 I'm happy to provide any additional required info or test patches if you CC me, since I'm not a kernel developer and am not subscribed to these lists. Thanks.