Comment 15 for bug 1874698

Thanks for the update.
• Removed the previous kernel with sudo dpkg -r --force-all linux-image-unsigned-5.4.0-25-generic
• Downloaded and installed v3 with sudo dpkg -i *.dev. Got

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Processing triggers for linux-image-unsigned-5.4.0-25-generic (5.4.0-25.29+skiphdmiv3) ...
/etc/kernel/postinst.d/dkms:
 * dkms: running auto installation service for kernel 5.4.0-25-generic
ACPI disabled in this kernel, not building module.
Error! The /var/lib/dkms/acpi-call/1.1.0/5.4.0-25-generic/x86_64/dkms.conf for module acpi-call includes a BUILD_EXCLUSIVE directive which
does not match this kernel/arch. This indicates that it should not be built.
Error! Your kernel headers for kernel 5.4.0-25-generic cannot be found.
Please install the linux-headers-5.4.0-25-generic package,
or use the --kernelsourcedir option to tell DKMS where it's located
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• Anyway, I proceeded. Comment out "options snd-intel-dspcfg dsp_driver=1
" in alsa-base.conf. And rebooted.
* No sound. "Dummy output" on pavucontrol
* Attaching full dmesg log and alsa-info: http://alsa-project.org/db/?f=8c55fd41cbd662c08dd8a21bf8d73817dbb8b7d2
* alsa -l: the -l flag is not a valid option for alsa command on my system.

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wittawat@omen:~$ inxi -Ax
Audio: Device-1: Intel Cannon Lake PCH cAVS vendor: Hewlett-Packard driver: sof-audio-pci bus ID: 00:1f.3
           Device-2: NVIDIA TU106 High Definition Audio vendor: Hewlett-Packard driver: snd_hda_intel v: kernel
           bus ID: 01:00.1
           Sound Server: ALSA v: k5.4.0-25-generic
----

* This report is based on Hdmi.conf on my machine. I can try Hdmi.conf that you sent. Will post again.

* By the way, in all versions of the 5.4.0-25 kernel you sent, I could not change the brightness of my display. I guess there is something to do with ACPI.

Thanks.