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Sun, 23 Aug 2026 08:50:54 +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 jLdwN260impoAQAAD6G6ig (envelope-from ); Sun, 23 Aug 2026 08:50:54 +0000 Date: Sun, 23 Aug 2026 10:50:54 +0200 Message-ID: <87mrudw781.wl-tiwai@suse.de> From: Takashi Iwai To: Csaba Budai Cc: Jaroslav Kysela , Takashi Iwai , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ALSA: hda/realtek: Fix ALC700 audio on Intel Hades Canyon In-Reply-To: <20260821102514.11194-1-ilyr73@gmail.com> References: <20260821102514.11194-1-ilyr73@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-kernel@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-Spam-Score: -3.30 X-Spam-Level: X-Spam-Flag: NO 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)[5]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:mid] On Fri, 21 Aug 2026 12:25:14 +0200, Csaba Budai wrote: > > On Intel Hades Canyon systems with an ALC700 codec, analog audio can > become unusable after rebooting from Windows into Linux. > > The affected system uses codec subsystem ID 8086:2073. In the broken > state, Realtek coefficient 0x1b has value 0x4a4b. Setting bit 0x0400 > changes it to 0x4e4b and immediately restores normal analog playback. > > The BIOS also sets this bit after disabling and re-enabling onboard > audio, while Windows may leave it cleared. Linux currently does not > restore it during codec initialization. > > Add a machine-specific fixup for Intel Hades Canyon which sets only > bit 0x0400 of coefficient 0x1b during HDA_FIXUP_ACT_INIT. > > The fix has been verified across Windows -> Linux reboots on an Intel > NUC8i7HNB with an ALC700 codec. > > Signed-off-by: Csaba Budai Applied now. Thanks. Takashi