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Tue, 29 Sep 2026 13:14:09 +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 FUSzEKG5u2qhDAAAD6G6ig (envelope-from ); Tue, 29 Sep 2026 13:14:09 +0000 Date: Tue, 29 Sep 2026 15:14:09 +0200 Message-ID: <87ecec19pa.wl-tiwai@suse.de> From: Takashi Iwai To: Faaris Ansari Cc: Sasha Levin , stable@vger.kernel.org, regressions@lists.linux.dev, linux-sound@vger.kernel.org, =?ISO-8859-1?Q?C=E1ssio?= Gabriel , Takashi Iwai , Jaroslav Kysela , Faaris Ansari Subject: Re: [REGRESSION] Audient EVO4 hardware volume control now requires quirk In-Reply-To: <87mrt01bdg.wl-tiwai@suse.de> References: <2026-09-27-daily-reply-0001-re-audient-evo4-mixer-put-errors@kernel.org> <2026-09-28-daily-reply-0001-re-audient-evo4-upstream-decision@kernel.org> <2026-09-28-2-daily-reply-0001-re-audient-evo4-channel-3-set-cur@kernel.org> <87tsn838gk.wl-tiwai@suse.de> <87mrt01bdg.wl-tiwai@suse.de> 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 [-2.01 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; 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)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; FREEMAIL_TO(0.00)[googlemail.com]; TO_DN_SOME(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; FREEMAIL_CC(0.00)[kernel.org,vger.kernel.org,lists.linux.dev,gmail.com,suse.com,perex.cz]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCPT_COUNT_SEVEN(0.00)[9]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:104:10:150:64:97:from,2a07:de40:b281:106:10:150:64:167:received]; RCVD_VIA_SMTP_AUTH(0.00)[]; TAGGED_RCPT(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] X-Spam-Score: -2.01 X-Spam-Level: X-Rspamd-Action: no action X-Rspamd-Queue-Id: A7E061F391 X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Flag: NO On Tue, 29 Sep 2026 14:38:03 +0200, Takashi Iwai wrote: > > On Tue, 29 Sep 2026 07:58:03 +0200, > Takashi Iwai wrote: > > > > On Tue, 29 Sep 2026 00:39:05 +0200, > > Sasha Levin wrote: > > > > > > > [ 80.940668] usb 3-1: cannot set ctl value: req = 0x1, wValue = 0x203, > > > > wIndex = 0xa00, type = 4, data = 0x0/0x81 > > > [...] > > > > numid=4,iface=MIXER,name='EVO4 Playback Volume' > > > > ; type=INTEGER,access=rw---R--,values=4,min=0,max=254,step=0 > > > > : values=182,182,0,0 > > > > > > Thanks, that narrows it down. > > > > > > Every failure is SET_CUR of the Volume control on feature unit 10, channel 3 > > > (wValue 0x0203, wIndex 0x0a00). That unit is 'EVO4 Playback Volume' and > > > advertises read/write volume on all four channels. mixer_ctl_feature_put() > > > writes channels 1 and 2, then returns the channel 3 error, so the hardware > > > volume changes while userspace is told the write failed and adds software > > > attenuation on top. Faaris sees the same on 7.3-rc5, so this is a mainline > > > regression from 87a6f2fa6e6c ("ALSA: usb-audio: Propagate write errors in > > > generic mixer put callbacks"). > > > > Right. So a simple fix would be to just to set the IGNORE_CTL_ERROR > > quirk flag like below. One of iD14 models has already this flag, so > > it might be safer to set to all Audient devices. > > ... and below is such a version to cover all Audient devices: > > Faaris, please let us know if this (or previous) one actually works > for you. Once after confirmation, I'll submit the proper patch for > upstream. ... or if you have a chance to test Christian's patch set and verify whether the problem is fixed there, we can avoid other changes: https://lore.kernel.org/20260919151840.24371-1-arc@gmx.li Takashi