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Tue, 7 Dec 2021 20:55:13 -0800 (PST) MIME-Version: 1.0 Date: Tue, 07 Dec 2021 20:55:13 -0800 From: Paxton Evans To: help-guix@gnu.org Subject: No sound on laptop after linux-libre 5.15 Message-ID: Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=198.252.153.129; envelope-from=paxton@riseup.net; helo=mx1.riseup.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Wed, 08 Dec 2021 00:03:50 -0500 X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: "Help-Guix" X-Migadu-Flow: FLOW_IN X-Migadu-Country: US ARC-Message-Signature: i=1; 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aspmx1.migadu.com; dkim=pass header.d=riseup.net header.s=squak header.b=XJKNLEkY; dmarc=pass (policy=none) header.from=riseup.net; spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -7.45 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=riseup.net header.s=squak header.b=XJKNLEkY; dmarc=pass (policy=none) header.from=riseup.net; spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 02CE22BA50 X-Spam-Score: -7.45 X-Migadu-Scanner: scn0.migadu.com X-TUID: q0nJu+cSxg4q I've been encountering a strange sound issue lately, or rather, no sound at all since upgrading to linux-libre 5.15. The sound devices still appear in alsamixer and Pavucontrol, but try as I might, there's just no way to get them to play anything even though everything appears unmuted and detected. Rolling back to linux-libre 5.14.21 (guix ea7233befb9570cce47e5ca71725b285a580cd22) totally fixes this issue. Troubleshooting sound issues on GNU/Linux is such a nightmare that I'm hoping this list can help me, as I don't really know much about how sound on our favorite OS really works, and don't have enough information to file a bug. Can anyone give me pointers on where to start looking? dmesg on 5.15.6 didn't seem to report anything strange. I'm using a (Librebooted) MacBook 2,1 with no extra ("nonguix") channels configured. Thanks, Paxton