Hi folks. There seems to be a problem with audio. Kmix will not start. The application “pocketsphinx” voice recognition is receiving interrupted input (confirmed by analyzing raw audio data) . I can record using Audacity. Alsamixer works but input levels are weak, must speak close to mic and hissing in background.
Ran ALSA diagnostics which appears to indicate some problems. The file can be perused here:
I note this code in the dmesg section of the diagnostic script:
[23178.554407] [drm] nouveau 0000:18:00.0: Suspending GPU objects...
[23178.770042] HDA Intel 0000:18:00.1: PCI INT B disabled [23178.770064] ACPI handle has no context!
So its possible your PC has ACPI problems and needs to boot with a special ACPI boot code. That typically has side effects so lets hope that is not the case.
Instead, rather than following the ‘ACPI’ investigative path, we could make an assumption (speculative) that the alsa sound driver was not able to properly configure your PC’s sound upon booting. To address that it is possible to force the alsa sound driver to a specific configuration when booting by specifying a ‘model option’. I note from the alsa driver documentation file HD-Audio-Models.txt the following for the ALC262 which you noted is on your HP (and also indicated in the diagnostic script file output you provided):
fujitsu Fujitsu Laptop
hp-bpc HP xw4400/6400/8400/9400 laptops
hp-bpc-d7000 HP BPC D7000
hp-tc-t5735 HP Thin Client T5735
hp-rp5700 HP RP5700
benq Benq ED8
benq-t31 Benq T31
hippo Hippo (ATI) with jack detection, Sony UX-90s
hippo_1 Hippo (Benq) with jack detection
sony-assamd Sony ASSAMD
toshiba-s06 Toshiba S06
toshiba-rx1 Toshiba RX1
tyan Tyan Thunder n6650W (S2915-E)
ultra Samsung Q1 Ultra Vista model
lenovo-3000 Lenovo 3000 y410
nec NEC Versa S9100
basic fixed pin assignment w/o SPDIF
auto auto-config reading BIOS (default)
What I find particularly interesting is I see the entry “hp-bpc” which is for HP xw4400/6400/8400/9400 laptops (or workstations) and I think you may have an HP xw9400 laptop (or workstation) ? …
I would really like to see the contents of the /etc/modprobe.d/50-sound.conf so as to propose an edit to that file so as to insert the ‘hp-bpc’ option.
In the absence of having that file, I suspect all you need to do is add to the **start **of that file the line:
options snd slots=snd-hda-intel,snd-hda-intel
# 9LTX.pTA3G4HuajB:MCP55 High Definition Audio
alias snd-card-0 snd-hda-intel
# rrik.7CRezu9YczD:nVidia Corporation
alias snd-card-1 snd-hda-intel
The parts about it being an nVidia/intel MCP55 and the sound card numbers are correct.
On a side note, I still cannot start kmix. I was able to start it from the CLI with:
But now it will not start at all. Running
Checking for service D-Bus daemon unused
Well, that is the result. The only changes I made were the card priority for capture. It had the HDMI card on top and Analog second. I reversed them and then put them back where they were. That is when the D-Bus daemon always failed to start, as well as kmix.
I recall that kmix would not start after Audacity was installed. I needed to make recordings with specific parameters and kmix would not let me do it. I later found I could have done the recordings with arecord, which incidentally produces extremely poor playback quality at this time.
Ok, there are no backups in the directory, the system would not let me do it anyway. System startup sound works. Kaffeine and Amarok now behave as if the codecs were not installed. Songs were playing before the change.
The .conf file was restored to the original configuration and now the players work as before.
The original problem was the application pocketsphinx is using whatever has to do with arecord, which produces extremely poor recordings.
And there is still a problem with kmix not starting and the D-Bus problem. kmix works because I can select my master channel, devices, and levels by clicking or right clicking the icon in the system tray.