Addition
2) Why it's not fixed:
There was a flag to not power down the widget if it controls eapd, it was
called eapd_workaround and was set to true. I found out we need to set it to
false to avoid the click #2 because when transitioning to D3 we need to power
down the widget - Speaker 0x10 and it controls eapd. Now after changes there is
no flag. EAPD part was separated to a new function default_power_filter without
any flag to skip that. I've tried to add a new condition and the initial click
noise vanished:
--- a/hda_codec.c
+++ b/hda_codec.c
@@ -3763,6 +3763,8 @@
unsigned int power_state)
{
if (power_state == AC_PWRST_D3 &&
+ !((codec->vendor_id == 0x14f15045) &&
+ (codec->subsystem_id == 0x17aa20db)) &&
get_wcaps_type(get_wcaps(codec, nid)) == AC_WID_PIN &&
(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD)) {
int eapd = snd_hda_codec_read(codec, nid, 0,
3) Now I can tell it's not fixed
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https://bugs.launchpad.net/bugs/886975
Title:
[Thinkpad R61i/T61] Lenovo sound chip Conexant CX20549 Venice doesn't
work correctly.
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