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Thu, 20 Nov 2025 14:26:15 +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 y18XKAclH2kTRgAAD6G6ig (envelope-from ); Thu, 20 Nov 2025 14:26:15 +0000 Date: Thu, 20 Nov 2025 15:26:15 +0100 Message-ID: <87zf8g4w6w.wl-tiwai@suse.de> From: Takashi Iwai To: =?ISO-8859-1?Q?Ren=E9?= Rebe Cc: linux-sound@vger.kernel.org, Takashi Iwai , Kailang Yang Subject: Re: [PATCH V2] ALSA: realtek/alc288 fix headphone for MS Surface 2/3 In-Reply-To: <20251120.124240.139462482701146043.rene@exactco.de> References: <20251120.124240.139462482701146043.rene@exactco.de> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.1 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=ISO-8859-1 Content-Transfer-Encoding: 8bit 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)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; RCVD_TLS_ALL(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; FUZZY_RATELIMITED(0.00)[rspamd.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_THREE(0.00)[4]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:email,suse.de:mid] X-Spam-Flag: NO X-Spam-Score: -3.30 X-Spam-Level: On Thu, 20 Nov 2025 12:42:40 +0100, René Rebe wrote: > > The Surface Pro 2 and 3 have a strange headphone frequency response > and miss most of the bass. I discovered connecting the HP out to the > main DAC fixes this. Maybe the other is mono or intentionally filtered > signal for the built-in speakers? (At least the Lenovo Ideapad 720S > (AMD) (0x17aa, 0x3812) exhibited the same problem, but I don't have it > anymore for testing V2 changes.) > > Signed-off-by: René Rebe > Co-developed-by: Takashi Iwai > --- > V2: use preferred_pairs instead of directly writing verbs Applied now. Thanks. Takashi