Hi Takashi,
Attach patch for test. Thanks.
BR, Kailang
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Wednesday, November 08, 2017 3:11 PM To: Kailang Subject: Re: ALC275 COEF stuff?
On Wed, 08 Nov 2017 07:50:27 +0100, Kailang wrote:
Hi Takashi,
ALC275 had no EAPD control COEF register. So, BIOS verb table default will write COEF Index 0x0e bit 0 to 1. This is enable class-D power up. Windows restart will remove driver, it will write Index
0x0e bit 0 to
- (Power down class-D power) Maybe this will resolve the pop noise.
So, I think add write COEF Index 0x0e bit 0 to 1 at EAPD
site will sovle this issue.
I could make a patch for you.
Great, thanks!
BTW, there is another bug report about the missing right speaker output on Huawei MateBook X with ALC298: https://bugzilla.kernel.org/show_bug.cgi?id=197801
Can it be some missing COEF, too?
Takashi
Thanks.
BR, Kailang
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Tuesday, November 07, 2017 9:00 PM To: Kailang Subject: ALC275 COEF stuff?
Hi Kailang,
we got a bug report about the possibly missing COEF setup for ALC275 on Sony VAIO. https://bugzilla.kernel.org/show_bug.cgi?id=197737
Could you check whether the suggested verbs are correct?
Thanks!
Takashi
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