https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253900
Bug ID: 253900
Summary: Lenovo X1 Carbon 7th Generation requires quirk for
proper sound
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: ema...@freebsd.org
By default sound on the X1 Carbon 7th Generation is quiet and tinny. It turns
out the laptop has two sets of speakers on the top and bottom. The
bottom-facing speakers provide more volume and bass.
By default the top and bottom speakers are connected to different DACs, and
nothing goes to the DAC connected to the bottom speakers (nid 3).
## Top speakers
dev.hdaa.0.nid20_original: 0x90170110 as=1 seq=0 device=Speaker conn=Fixed
ctype=Analog loc=Internal color=Unknown misc=1
dev.hdaa.0.nid20_config: 0x90170110 as=1 seq=0 device=Speaker conn=Fixed
ctype=Analog loc=Internal color=Unknown misc=1
dev.hdaa.0.nid20: pin: Speaker (Fixed)
Widget cap: 0x0040058d PWR UNSOL STEREO
Association: 0 (0x0001)
Pin cap: 0x00010014 PDC OUT EAPD
Pin config: 0x90170110 as=1 seq=0 device=Speaker conn=Fixed ctype=Analog
loc=Internal color=Unknown misc=1
Pin control: 0x00000040 OUT
EAPD: 0x00000002 EAPD
Output amp: 0x80000000 mute=1 step=0 size=0 offset=0 (0/0dB)
Connections: 1
+ <- nid=2 [audio output]
## Bottom bass speakers
dev.hdaa.0.nid23_original: 0x90170111 as=1 seq=1 device=Speaker conn=Fixed
ctype=Analog loc=Internal color=Unknown misc=1
dev.hdaa.0.nid23_config: 0x90170111 as=1 seq=1 device=Speaker conn=Fixed
ctype=Analog loc=Internal color=Unknown misc=1
dev.hdaa.0.nid23: pin: Speaker (Fixed)
Widget cap: 0x0040058d PWR UNSOL STEREO
Association: 0 (0x0002)
Pin cap: 0x0000001c PDC HP OUT
Pin config: 0x90170111 as=1 seq=1 device=Speaker conn=Fixed ctype=Analog
loc=Internal color=Unknown misc=1
Pin control: 0x00000040 OUT
Output amp: 0x80000000 mute=1 step=0 size=0 offset=0 (0/0dB)
Connections: 3
+ [DISABLED] <- nid=2 [audio output]
+ <- nid=3 [audio output] (selected)
+ [DISABLED] <- nid=6 [audio output] [DISABLED]
References:
- jcs OpenBSD on the Lenovo ThinkPad X1 Carbon (7th Gen)
https://jcs.org/2019/08/14/x1c7
- quirk commit
https://github.com/openbsd/src/commit/b4db693dac78b3ae76ca949aac545468758883b4
- Linux bug https://bugzilla.kernel.org/show_bug.cgi?id=207407
- Linux commits
- 6a6660d049f88b89fd9a4b9db3581b245f7782fa
- 9774dc218bb628974dcbc76412f970e9258e5f27
- c37c0ab029569a75fd180edb03d411e7a28a936f
- 54a6a7dc107da0492a9e84fd7e9a107b3c58138d
- d2cd795c4ece1a24fda170c35eeb4f17d9826cbb
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