** Also affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
** Tags added: kernel-sound
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https://bugs.launchpad.net/bugs/1355984
Title:
Built in speakers do not work on iMac 14,2 and iMac 14,4
Status in “alsa-driver” package in Ubuntu:
New
Status in “linux-meta” package in Ubuntu:
New
Bug description:
No sound from internal speakers but OK from plugged in headphones. Running
Xubuntu 14.04 on partitioned iMac 14,4 which has Intel HD Audio (S/PDIF
DigitalAudio output). Headphones appear to be using analogue output. Both loud
and clear using OSX 10.9.4.
Have tried all fixes found on many Linux distro websites but no success. Also
tried installing Lubuntu (no sound at all) Linux Mint 16 & 17 and Ubuntu 13.04,
13.10 (same problem as Xubuntu).
Have all PulseAudio utils installed, all devices are listed but only analogue
volume meter shows outputs when playing but as above nothing from speakers.
AlsaMixer shows S/PDIF (highlighted), SPDIF 1 & S/PDIF 2 not MM, set at 00
but cannot be adjusted.
What is the problem? I sense there is a simple solution here, if only to ger
the analogue output via the internal speakers.
This is reminiscent of problemsI I had with Unbuntu 12.04 on an earlier iMac
which were solved simply using AlsaMixer.
That I have installed Ubuntu on my new iMac shows how much I prefer Linux to
OSX, this small problem is spoiling my enjoyment of your great OS.
Thank you in anticipation.
Ed Hughes
I have the same issue on an iMac 14,2. I think the audio hardware in the iMac
14,2 and 14,4 is probably the same. To get the headphones to work I upgraded to
the daily ALSA snapshot found here:
https://code.launchpad.net/~ubuntu-audio-dev/+archive/ubuntu/alsa-daily/+packages
Neither the headphones or the internal speakers work with the default
configuration so I did this: # echo "options snd-hda-intel model=imac27_122" >>
/etc/modprobe.d/imac_local.conf followed by a reboot. This fix works on every
other Mac I have tested so far, but for this machine it only fixes the
headphone audio. The output of alsa-info.sh is here:
http://www.alsa-project.org/db/?f=08cf13552b70232c96fea9293fdd54066243d79a I
have downloaded the HDA Analyzer tool but I can't seem to get the internal
speakers to work correctly in any consistent way, although they do occasionally
work correctly for a few seconds. I can consistently make sound come from the
speakers if I chose VREF = 50 or 80 in Node[0x0d]pin but it sounds like I am
using a much smaller lower quality speaker when I do that. Here is the text
dump for that node configuration:
Node 0x0d [Pin Complex] wcaps 0x41048b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00001764: IN Detect Balance
Vref caps: HIZ 50 GRD 80
Pin Default 0x400000f0: [N/A] Line Out at Ext N/A
Conn = Unknown, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Unsolicited: tag=0x00, enabled=0
Power: setting=D0, actual=D0
Delay: 1 samples
The audio related parts of the output of # sudo lspci -vvnn is:
00:1b.0 Audio device [0403]: Intel Corporation 8 Series/C220 Series Chipset
High Definition Audio Controller [8086:8c20] (rev 05)
Subsystem: Intel Corporation Device [8086:7270]
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 51
Region 0: Memory at b1c10000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee003f8 Data: 0000
Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0
ExtTag- RBE-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
Capabilities: [100 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
VC1: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=2 ArbSelect=Fixed TC/VC=04
Status: NegoPending- InProgress-
Kernel driver in use: snd_hda_intel
01:00.1 Audio device [0403]: NVIDIA Corporation GK104 HDMI Audio Controller
[10de:0e0a] (rev a1)
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 B routed to IRQ 17
Region 0: Memory at b1080000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [60] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [78] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us
ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
MaxPayload 256 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s
<512ns, L1 <4us
ClockPM+ Surprise- LLActRep- BwNot-
LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt-
ABWMgmt-
DevCap2: Completion Timeout: Range AB, TimeoutDis+, LTR-, OBFF Not Supported
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+,
EqualizationPhase1+
EqualizationPhase2+, EqualizationPhase3+, LinkEqualizationRequest+
Kernel driver in use: snd_hda_intel
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