Bug 625188 - MacBookPro 7,1: bad default volumes, needs snd_pci_quirk
MacBookPro 7,1: bad default volumes, needs snd_pci_quirk
Product: Fedora
Classification: Fedora
Component: alsa-lib (Show other bugs)
All Linux
low Severity medium
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Assigned To: Jaroslav Kysela
Fedora Extras Quality Assurance
Depends On:
Blocks: AlsaVolume
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Reported: 2010-08-18 15:53 EDT by Will Woods
Modified: 2012-08-16 14:29 EDT (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2012-08-16 14:29:05 EDT
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
alsa-info.txt (32.77 KB, text/plain)
2010-08-18 15:53 EDT, Will Woods
no flags Details
kernel- (632 bytes, patch)
2010-08-18 15:54 EDT, Will Woods
no flags Details | Diff

  None (edit)
Description Will Woods 2010-08-18 15:53:35 EDT
Created attachment 439493 [details]

New MacBookPro7,1 has an audio chipset similar to (but with a different subsystem ID than) the mbp55 - I get no audio unless I put the following in /etc/modprobe.d/sound.conf:
  options snd_hda_intel model=mbp55
I added SND_PCI_QUIRK(0x10de, 0xcb89, "MacBookPro 7,1", CS420X_MBP55) to sound/pci/hda/patch_cirrus.c and the device (mostly) works as expected.

As for the mixer problem - it starts up with the "Front Speaker" mixer element muted and at 0 volume. Using alsamixer / alsactl store I've got this fixed as well.
Comment 1 Will Woods 2010-08-18 15:54:06 EDT
Created attachment 439494 [details]
Comment 2 Adam Williamson 2010-11-05 17:59:44 EDT
you could try submitting this upstream also - when I came across a similar situation I sent the patch upstream and it was adopted pretty promptly.

it also means I have a bona fide kernel commit to my name :P

Fedora Bugzappers volunteer triage team
Comment 3 Will Woods 2010-11-05 18:05:28 EDT
I'd like to figure out a fix for the default mixer settings being wrong as well - but yeah, perhaps this simple patch is ready for upstream by itself.
Comment 4 Fedora End Of Life 2012-08-16 14:29:09 EDT
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