23 Jul
2021
23 Jul
'21
7:33 a.m.
Anno domini 2021 Thu, 22 Jul 21:59:13 -0400
E. Liddell scripsit:
On Fri, 23 Jul 2021 10:22:36 +1000
"Steven D'Aprano" <steve(a)pearwood.info> wrote:
Which happend on my devuan (and former debian) systems any time. Kmix just does not work
work with pulseaudio (on my systems). What's worse: alsamixer may work or not,
depending on air pressure. So my suggestion is: If kmix should change volume, remove
anything pulsaudio, then reboot, doublecheck if PA is really gone. Check if the firmware
for soundblaster is loaded:
# dmesg |grep firm
[ 5.889395] snd_hda_intel 0000:04:00.0: firmware: direct-loading firmware
ctefx-desktop.bin
.. and the try alsamixer to change volume.
On Thu, Jul 22, 2021 at 04:08:27PM -0400, E.
Liddell wrote:
PulseAudio is an additional layer on top of the *actual* Linux audio
system (ALSA). While it's no longer as buggy as it was when first
introduced, more software layers = more difficult to figure out what's
actually wrong.
It is possible that the cause of Edward's problem is Pulse grabbing
onto something that it shouldn't. It's also possible I'm barking up the
wrong tree entirely; what I saw of Pulse in its early days makes me
inclined to distrust it, perhaps unfairly. (My next step would be to kill PulseAudio with
fire regardless of whether
there was a hardware problem or not, but I have no use for its extra features
and it's possible that you do.)
It seems odd to me that your suggestion is to kill the package which
*does* change the volume on Edward's headphones, which would leave him
literally unable to change the volume at all. In my ignorance, that
seems pretty counter-intuitive and unhelpful. Can you educate me please? (And now someone else who has a Logitech headset is
going to
point to the exact problem, which will have nothing to do with any
of this, and I'm going to look like an idiot. That's okay—it won't
be the first time.)
If the headset is battery powerd it might have auto-gain, but I have never seen that in
real live (most likely 'cause I run from battery powerd audio stuff). If the headset
has a mic, it might also have auto-gain which is powered by the mic ghost voltage. Anyway,
you should be able to figure that out .. my bet is, there's no auto-gain but PA doing
"interesting" things.
Nik
E. Liddell
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