On Saturday 12 August 2017, Alexander Kapshuk wrote:
> On Sat, Aug 12, 2017 at 4:49 PM, Robin Atwood <robin@binro.org> wrote:
> What's the output of these command lines?
> (1). lspci -vnn | sed '/Audio/,/driver/!d'
> 
> (2). grep -Ei '^[^#]*(snd|hda)' linux/.config
> 
> (3). rc-update show | grep alsa
> 
> (4). grep HDA /var/log/dmesg

The output was what you would expect, lots info about HDA drivers and 
hardware:

lspci -vnn | sed '/Audio/,/driver/!d' 
00:1b.0 Audio device [0403]: Intel Corporation 5 Series/3400 Series Chipset 
High Definition Audio [8086:
3b56] (rev 06) 
       Subsystem: Lenovo 5 Series/3400 Series Chipset High Definition Audio 
[17aa:215e] 
       Flags: bus master, fast devsel, latency 0, IRQ 28 
       Memory at f2420000 (64-bit, non-prefetchable) [size=16K] 
       Capabilities: [50] Power Management version 2 
       Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ 
       Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 
       Kernel driver in use: snd_hda_intel 
01:00.1 Audio device [0403]: NVIDIA Corporation High Definition Audio 
Controller [10de:0be3] (rev a1) 
       Subsystem: Lenovo High Definition Audio Controller [17aa:218f] 
       Flags: bus master, fast devsel, latency 0, IRQ 29 
       Memory at cdefc000 (32-bit, non-prefetchable) [size=16K] 
       Capabilities: [60] Power Management version 3 
       Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+ 
       Capabilities: [78] Express Endpoint, MSI 00 
       Kernel driver in use: snd_hda_intel


However, grepping dmesg was interesting:

# grep HDA /var/log/dmesg 
[   10.981754] input: HDA Digital PCBeep as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/hdaudioC0D0/inp
ut9 
[   10.981963] input: HDA Intel MID Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input10 
[   10.982033] input: HDA Intel MID Dock Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input11 
[   10.982102] input: HDA Intel MID Dock Headphone as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input
12 
[   10.982171] input: HDA Intel MID Headphone as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input13

No output about the speakers. On another system (that works) I see:

[   20.712891] input: HDA Intel Rear Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input5 
[   20.712984] input: HDA Intel Front Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input6 
[   20.713097] input: HDA Intel Line as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input7 
[   20.713185] input: HDA Intel Line Out as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input8

I think Line Out is a speaker. So why the difference?

Thanks
Robin
-- 
----------------------------------------------------------------------
Robin Atwood.

"Ship me somewheres east of Suez, where the best is like the worst,
 Where there ain't no Ten Commandments an' a man can raise a thirst"
         from "Mandalay" by Rudyard Kipling
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