Muting and unmuting Master channel when headphones are plugged in causes internal speaker to unmute on MacBook Pro
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Won't Fix
|
Medium
|
Unassigned |
Bug Description
Steps to reproduce:
Play music
(Sound comes out of speakers)
Plug headphones in
(Speakers switch off, sound now comes out of headphones)
Reduce volume to 0, or just mute
Increase volume, or unmute
Expected results:
Speakers remain off, sound comes out of headphones.
Actual results:
Speakers come back on, but sound also plays out of headphones. The master control controls both the headphone and the speaker volume.
snd-hda-intel in linux 2.6.28-11-generic in Ubuntu 9.04.
Bug stands since 8.04. Prior to that (with 7.10), the result was different but also buggy in a different way (I don't remember the details).
=======
Architecture: amd64
DistroRelease: Ubuntu 9.04
HibernationDevice: RESUME=
MachineType: Apple Inc. MacBookPro3,1
NonfreeKernelMo
Package: linux-image-
PackageArchitec
ProcCmdLine: root=UUID=
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=en_GB.UTF-8
ProcVersionSign
Uname: Linux 2.6.28-11-generic x86_64
UserGroups: adm admin audio cdrom dialout dip floppy fuse kvm libvirtd lpadmin plugdev pulse-rt sambashare video
=======
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
Subsystem: Apple Computer Inc. Device 00a0
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 256 bytes
Interrupt: pin A routed to IRQ 20
Region 0: Memory at 9b500000 (64-bit, non-prefetchable) [size=16K]
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
description: | updated |
tags: | removed: apport-bug |
description: | updated |
tags: |
added: macbookpro removed: macbook |
Changed in linux (Ubuntu): | |
status: | Confirmed → Triaged |
importance: | Undecided → Medium |
doesn't happen to me on June 2007 MacBook, with Hardy x86 edition. (although, after upgrading to Hardy, I had to use the workaround in https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/201957 for any sound at all to come out of my headphones). Now, maybe it's different on your different configuration or when the Ubuntu is 64-bit. For me, even if no sound comes out of the headphones, if there are any plugged into the headphones jack then no sound comes out of the built-in speakers.