Hi Takashi, Attach patch for test. Thanks. BR, Kailang > -----Original Message----- > From: Takashi Iwai [mailto:tiwai@xxxxxxx] > 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 > > 0. (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@xxxxxxx] > > > 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 > > > > > > > > > ------Please consider the environment before printing this e-mail. > > > >
Attachment:
0000-alc275-no-sound.patch
Description: 0000-alc275-no-sound.patch
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