ALSA: hda/realtek: Audio disappears on HP 15-fc000 after warm boot again

JIRA: https://issues.redhat.com/browse/RHEL-118908

commit f4b3cef
Author: Kailang Yang <kailang@realtek.com>
Date: Tue Aug 19 14:03:44 2025 +0800

    ALSA: hda/realtek: Audio disappears on HP 15-fc000 after warm boot again

    There was a similar bug in the past (Bug 217440), which was fixed for
    this laptop.
    The same issue is occurring again as of kernel v.6.12.2. The symptoms
    are very similar - initially audio works but after a warm reboot, the
    audio completely disappears until the computer is powered off (there
    is no audio output at all).

    The issue is also related by caused by a different change now. By
    bisecting different kernel versions, I found that reverting
    cc3d0b5 in patch_realtek.c[*] restores the sound and it works
    fine after the reboot.

    [*] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/sound/pci/hda/patch_realtek.c?h=v6.12.2&id=4ed7f16070a8475c088ff423b2eb11ba15eb89b6

    [ patch description reformatted by tiwai ]

    Fixes: cc3d0b5 ("ALSA: hda/realtek: Update ALC256 depop procedure")
    Link: https://bugzilla.kernel.org/show_bug.cgi?id=220109
    Signed-off-by: Kailang Yang <kailang@realtek.com>
    Link: https://lore.kernel.org/5317ca723c82447a938414fcca85cbf5@realtek.com
    Signed-off-by: Takashi Iwai <tiwai@suse.de>

Signed-off-by: Jaroslav Kysela <jkysela@redhat.com>

Author: jkysela-rh

sound/hda/codecs/realtek/alc269.c

@@ -510,6 +510,15 @@ static void alc256_shutup(struct hda_codec *codec)
 		hp_pin = 0x21;
 
 	alc_update_coefex_idx(codec, 0x57, 0x04, 0x0007, 0x1); /* Low power */
+
+	/* 3k pull low control for Headset jack. */
+	/* NOTE: call this before clearing the pin, otherwise codec stalls */
+	/* If disable 3k pulldown control for alc257, the Mic detection will not work correctly
+	 * when booting with headset plugged. So skip setting it for the codec alc257
+	 */
+	if (spec->en_3kpull_low)
+		alc_update_coef_idx(codec, 0x46, 0, 3 << 12);
+
 	hp_pin_sense = snd_hda_jack_detect(codec, hp_pin);
 
 	if (hp_pin_sense) {
@@ -520,14 +529,6 @@ static void alc256_shutup(struct hda_codec *codec)
 
 		msleep(75);
 
-	/* 3k pull low control for Headset jack. */
-	/* NOTE: call this before clearing the pin, otherwise codec stalls */
-	/* If disable 3k pulldown control for alc257, the Mic detection will not work correctly
-	 * when booting with headset plugged. So skip setting it for the codec alc257
-	 */
-		if (spec->en_3kpull_low)
-			alc_update_coef_idx(codec, 0x46, 0, 3 << 12);
-
 		if (!spec->no_shutup_pins)
 			snd_hda_codec_write(codec, hp_pin, 0,
 				    AC_VERB_SET_PIN_WIDGET_CONTROL, 0x0);