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Sun, 23 Aug 2026 09:05:27 +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 d6x6D9e3imqzDgAAD6G6ig (envelope-from ); Sun, 23 Aug 2026 09:05:27 +0000 Date: Sun, 23 Aug 2026 11:05:26 +0200 Message-ID: <87fr05w6jt.wl-tiwai@suse.de> From: Takashi Iwai To: Will Porter Cc: linux-sound@vger.kernel.org, Takashi Iwai , Jaroslav Kysela , Neil Andrews , linux-kernel@vger.kernel.org Subject: Re: [PATCH] ALSA: usb-audio: Add iD14 MkI to monitor-mix volume quirk In-Reply-To: <20260823015353.686080-1-mrwillporter@gmail.com> References: <20260823015353.686080-1-mrwillporter@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 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 [-3.30 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.990]; MIME_GOOD(-0.10)[text/plain]; FREEMAIL_TO(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[6]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid] X-Spam-Flag: NO X-Spam-Score: -3.30 X-Spam-Level: On Sun, 23 Aug 2026 03:53:53 +0200, Will Porter wrote: > > Add the iD14 MkI USB ID to the existing audient_id14_map. This > names feature unit 12 Monitor Mix Playback Volume. > > Live meter A/B testing on MkI USB ID 2708:0002 reproduced the same > asymmetric attenuation seen on MkII. At ALSA value 104, the right > channel was 23.07 dB below the left. At 127, both channels were equal. > > The misleading Speaker Playback Volume name causes PipeWire to adopt > FU12 as the stream master. Reuse the existing map to keep the control > available while preventing that selection. > > Hardware-tested on Bazzite 7.2.0-ogc4.1.fc44.x86_64 with this change > backported. ALSA exposed Monitor Mix Playback Volume after module load > and USB reconnect. PipeWire volume changes from 100% to 35% and back > left all four FU12 values at 127. Channel-isolated left/right playback > remained balanced after reconnect. > > Build-tested with CONFIG_SND_USB_AUDIO=m using the focused sound/usb > target. > > Assisted-by: Codex:gpt-5 > Signed-off-by: Will Porter Applied now. Thanks. Takashi