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Mon, 2 Jun 2025 14:50:27 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id vfLxLzO6PWgGXwAAD6G6ig (envelope-from ); Mon, 02 Jun 2025 14:50:27 +0000 Date: Mon, 02 Jun 2025 16:50:27 +0200 Message-ID: <87plfmxkng.wl-tiwai@suse.de> From: Takashi Iwai To: "David Heimann" Cc: tiwai@suse.com, perex@perex.cz, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ALSA: usb-audio: Add implicit feedback quirk for RODE AI-1 In-Reply-To: <084dc88c-1193-4a94-a002-5599adff936c@app.fastmail.com> References: <084dc88c-1193-4a94-a002-5599adff936c@app.fastmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spamd-Result: default: False [-3.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; TO_DN_SOME(0.00)[]; ARC_NA(0.00)[]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns,suse.de:dkim,suse.de:mid]; DKIM_TRACE(0.00)[suse.de:+] X-Spam-Level: X-Spam-Flag: NO X-Rspamd-Queue-Id: 134CB219DF X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Score: -3.51 On Sun, 01 Jun 2025 18:41:16 +0200, David Heimann wrote: > > The RODE AI-1 audio interface requires implicit feedback sync between playback endpoint 0x03 and feedback endpoint 0x84 on interface 3, but doesn't advertise this in its USB descriptors. > > Without this quirk, the device receives audio data but produces no output. > > Signed-off-by: David Heimann > --- > Tested using module parameter: > options snd-usb-audio implicit_fb=1:19f7:000a > > This device previously worked but stopped producing audio output (possibly after a kernel or audio subsystem update). This quirk restores functionality. > > This resolves audio output on the RODE AI-1 which otherwise receives audio data but produces no sound. Applied now. Thanks. Takashi