My default boot has been working using the preempt kernel. I didn't know I was
using preempt and do not know when that started being used. I want to use the
default kernel but it has no sound out or mic in.
The speaker widget has a red slash.
I use KDE Plasma 5.18.6
My system setting in the default kernel shows dummy driver loaded.
Below is some abbreviated details comparing the two kernels.
The alsa-info dmesg for default kernel is:
!!ALSA/HDA dmesg
!!--------------
[ 0.614761] ACPI: Added _OSI(Linux-Dell-Video)
[ 0.614761] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 0.614761] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
==============
The alsa-info dmesg for the preempt kernel is:
!!ALSA/HDA dmesg
!!--------------
[ 0.614381] ACPI: Added _OSI(Linux-Dell-Video)
[ 0.614381] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 0.614381] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
--
[ 20.701788] iwl4965 0000:03:00.0 wlan1: renamed from wlan0
[ 21.528295] snd_hda_intel 0000:00:1b.0: probe_mask set to 0x1 for device
17aa:20ac
[ 22.102354] snd_hda_codec_analog hdaudioC0D0: autoconfig for AD1984:
line_outs=1 (0x12/0x0/0x0/0x0/0x0) type:speaker
[ 22.102358] snd_hda_codec_analog hdaudioC0D0: speaker_outs=0
(0x0/0x0/0x0/0x0/0x0)
[ 22.102360] snd_hda_codec_analog hdaudioC0D0: hp_outs=1
(0x11/0x0/0x0/0x0/0x0)
[ 22.102361] snd_hda_codec_analog hdaudioC0D0: mono: mono_out=0x0
[ 22.102363] snd_hda_codec_analog hdaudioC0D0: dig-out=0x1b/0x0
[ 22.102364] snd_hda_codec_analog hdaudioC0D0: inputs:
[ 22.102367] snd_hda_codec_analog hdaudioC0D0: Internal Mic=0x15
[ 22.102368] snd_hda_codec_analog hdaudioC0D0: Mic=0x14
[ 22.102370] snd_hda_codec_analog hdaudioC0D0: Dock Mic=0x1c
[ 22.119789] input: HDA Intel Mic as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[ 22.123231] input: HDA Intel Dock Mic as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input12
[ 22.123638] input: HDA Intel Headphone as
/devices/pci0000:00/0000:00:1b.0/sound/card0/input13
[ 23.639270] systemd-journald[418]: Received client request to flush runtime
journal.
===========
The driver for the default kernel is not loading.
These modules are from alsa-info of the preempt kernel, missing from the
default kernel:
snd
snd_compress
snd_hda_codec
snd_hda_codec_analog
snd_hda_codec_generic
snd_hda_core
snd_hda_intel
snd_hwdep
snd_intel_dspcfg
snd_pcm
snd_pcm_dmaengine
snd_soc_core
snd_timer
soundcore
soundwire_bus
soundwire_cadence
soundwire_generic_allocation
soundwire_intel
I did not load all the info I have collected but do have dmesg for both kernels
and alsa-info for both.
Also I notice a difference in directory structure of /lib/modules/[kernel
ver]/kernel/sound
The default kernel contains these directories (missing the hda directory and
two kernel modules)
drwxr-xr-x 1 root root 50 Feb 7 12:07 .
drwxr-xr-x 1 root root 86 Feb 2 00:12 ..
drwxr-xr-x 1 root root 158 Feb 7 12:06 drivers
drwxr-xr-x 1 root root 68 Feb 7 12:06 i2c
drwxr-xr-x 1 root root 4 Feb 7 12:06 isa
drwxr-xr-x 1 root root 706 Feb 7 12:06 pci
drwxr-xr-x 1 root root 12 Feb 7 12:07 soc
drwxr-xr-x 1 root root 74 Feb 7 12:07 usb
drwxr-xr-x 1 root root 38 Feb 7 12:07 xen
=======
The preempt kernel directory:
drwxr-xr-x 1 root root 154 Feb 7 12:07 .
drwxr-xr-x 1 root root 94 Feb 2 00:12 ..
-rw-r--r-- 1 root root 2136 Feb 2 00:16 ac97_bus.ko.xz
drwxr-xr-x 1 root root 306 Feb 7 12:05 core
drwxr-xr-x 1 root root 264 Feb 7 12:06 drivers
drwxr-xr-x 1 root root 170 Feb 7 12:05 firewire
drwxr-xr-x 1 root root 86 Feb 7 12:05 hda
drwxr-xr-x 1 root root 68 Feb 7 12:06 i2c
drwxr-xr-x 1 root root 4 Feb 7 12:06 isa
drwxr-xr-x 1 root root 1040 Feb 7 12:06 pci
drwxr-xr-x 1 root root 130 Feb 2 00:16 soc
-rw-r--r-- 1 root root 5016 Feb 2 00:16 soundcore.ko.xz
drwxr-xr-x 1 root root 44 Feb 7 12:05 synth
drwxr-xr-x 1 root root 154 Feb 7 12:07 usb
drwxr-xr-x 1 root root 48 Feb 7 12:05 x86
drwxr-xr-x 1 root root 38 Feb 7 12:07 xen
One recommendation I received on the forums was to completely remove the
preempt kernel and re-download the default kernel, all at the same time using
YaST. I am not comfortable with that approach but will do that if it is
recommended here.
My usual method of updating is to use zypper so I have no idea of when the
preempt kernel became the default.
Can I simply copy hda modules from preemt over to the default kernel directory?
If so I would like instructions for the commands to use to safely activate the
drivers.