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From: Michael Catanzaro <>
To:, Jaroslav Kysela <>,
	Takashi Iwai <>,
	Harsha Priya <>
Subject: [REGRESSION] "ALSA: HDA: Early Forbid of runtime PM" broke my laptop's internal audio
Date: Thu, 28 Jan 2021 16:39:50 -0600	[thread overview]
Message-ID: <> (raw)


On my System76 Gazelle Pro (gazp9) laptop, internal audio broke after 
upgrading to kernel 5.10.

The laptop's speakers produce no sound. Audio from headphones still 
works fine. A quick test is to visit GNOME System Settings -> Sound -> 
Output, select Test, click Front Left or Front Right and notice there 
is no sound. I tested a mainline kernel revision from yesterday 
(5.11-rc5+) and the regression is not yet fixed. I bisected the 
regression to "ALSA: HDA: Early Forbid of runtime PM":

I created a downstream bug report here, including some bits from dmesg 
that may or may not be relevant in comment #2:

Audio devices:

$ lspci | grep -i audio
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core 
Processor HD Audio Controller (rev 06)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset 
High Definition Audio Controller (rev 05)

OS: Fedora 33

I'm happy to provide any additional required info or test patches if 
you CC me, since I'm not a kernel developer and am not subscribed to 
these lists. Thanks.

             reply	other threads:[~2021-01-28 22:41 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-28 22:39 Michael Catanzaro [this message]
2021-01-29  1:37 ` [REGRESSION] "ALSA: HDA: Early Forbid of runtime PM" broke my laptop's internal audio N, Harshapriya
     [not found]   ` <>
     [not found]     ` <>
     [not found]       ` <>
     [not found]         ` <>
     [not found]           ` <>
2021-01-29 16:17             ` Takashi Iwai
2021-01-29 17:24               ` Michael Catanzaro
2021-01-29 18:56                 ` Takashi Iwai
2021-08-14 14:02                   ` 藍挺瑋
2021-08-15  9:20                     ` Takashi Iwai
2021-08-16 16:57                       ` 藍挺瑋
2021-08-17  5:25                         ` Takashi Iwai
2021-02-01  4:24               ` Erich Ritz
2021-02-01 13:57                 ` Greg KH

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