please install a higher version kernel like 5.4.0-28/29 first, boot with the new kernel, then sudo dpkg -r --force-all linux-image- unsigned-5.4.0-26-generic, install the v4 testing kernel to do the test.
I installed the v4 testing kernel on my machine, there is no errors: hwang4@hwang4-Vostro-5390:/tmp$ sudo dpkg -i *.deb [sudo] password for hwang4: Selecting previously unselected package linux-image-unsigned-5.4.0-26-generic. (Reading database ... 393690 files and directories currently installed.) Preparing to unpack linux-image-unsigned-5.4.0-26-generic_5.4.0-26.30+skipv4_amd64.deb ... Unpacking linux-image-unsigned-5.4.0-26-generic (5.4.0-26.30+skipv4) ... Selecting previously unselected package linux-modules-5.4.0-26-generic. Preparing to unpack linux-modules-5.4.0-26-generic_5.4.0-26.30+skipv4_amd64.deb ... Unpacking linux-modules-5.4.0-26-generic (5.4.0-26.30+skipv4) ... Selecting previously unselected package linux-modules-extra-5.4.0-26-generic. Preparing to unpack linux-modules-extra-5.4.0-26-generic_5.4.0-26.30+skipv4_amd64.deb ... Unpacking linux-modules-extra-5.4.0-26-generic (5.4.0-26.30+skipv4) ... Setting up linux-modules-5.4.0-26-generic (5.4.0-26.30+skipv4) ... Setting up linux-image-unsigned-5.4.0-26-generic (5.4.0-26.30+skipv4) ... I: /vmlinuz.old is now a symlink to boot/vmlinuz-5.3.0-46-generic I: /initrd.img.old is now a symlink to boot/initrd.img-5.3.0-46-generic I: /vmlinuz is now a symlink to boot/vmlinuz-5.4.0-26-generic I: /initrd.img is now a symlink to boot/initrd.img-5.4.0-26-generic Setting up linux-modules-extra-5.4.0-26-generic (5.4.0-26.30+skipv4) ... Processing triggers for linux-image-unsigned-5.4.0-26-generic (5.4.0-26.30+skipv4) ... /etc/kernel/postinst.d/dkms: * dkms: running auto installation service for kernel 5.4.0-26-generic Error! Your kernel headers for kernel 5.4.0-26-generic cannot be found. Please install the linux-headers-5.4.0-26-generic package, or use the --kernelsourcedir option to tell DKMS where it's located Error! The dkms.conf for this module includes a BUILD_EXCLUSIVE directive which does not match this kernel/arch. This indicates that it should not be built. ...done. /etc/kernel/postinst.d/initramfs-tools: update-initramfs: Generating /boot/initrd.img-5.4.0-26-generic /etc/kernel/postinst.d/zz-update-grub: Sourcing file `/etc/default/grub' Generating grub configuration file ... Found linux image: /boot/vmlinuz-5.4.0-26-generic Found initrd image: /boot/initrd.img-5.4.0-26-generic Found linux image: /boot/vmlinuz-5.3.0-46-generic Found initrd image: /boot/initrd.img-5.3.0-46-generic Found linux image: /boot/vmlinuz-5.0.0-1042-oem-osp1 Found initrd image: /boot/initrd.img-5.0.0-1042-oem-osp1 Found linux image: /boot/vmlinuz-5.0.0-1037-oem-osp1 Found initrd image: /boot/initrd.img-5.0.0-1037-oem-osp1 Found linux image: /boot/vmlinuz-5.0.0-1034-oem-osp1 Found initrd image: /boot/initrd.img-5.0.0-1034-oem-osp1 Adding boot menu entry for EFI firmware configuration done -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1874698 Title: [OMEN by HP Laptop 15-dh0xxx, Realtek ALC285, Black Mic, Left] Recording problem Status in HWE Next: New Status in alsa-driver package in Ubuntu: New Bug description: On Ubuntu 20.04, by default, sof-audio-pci is used. I only have "Dummy output" in pavucontrol. To fix this, I modified /etc/modprobe.d/alsa- base.conf and added "options snd-intel-dspcfg dsp_driver=1" so that now "snd-hda-intel" is loaded instead of sof-audio-pci. While the speakers are working fine, I do not have the internal microphone working (suspect a digital array). ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: wittawat 2063 F.... pulseaudio /dev/snd/controlC0: wittawat 2063 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Fri Apr 24 12:42:32 2020 InstallationDate: Installed on 2020-04-23 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Black Mic, Left Symptom_Type: None of the above Title: [OMEN by HP Laptop 15-dh0xxx, Realtek ALC285, Black Mic, Left] Recording problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/09/2019 dmi.bios.vendor: AMI dmi.bios.version: F.22 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 8600 dmi.board.vendor: HP dmi.board.version: 44.41 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAMI:bvrF.22:bd12/09/2019:svnHP:pnOMENbyHPLaptop15-dh0xxx:pvr:rvnHP:rn8600:rvr44.41:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV HP OMEN dmi.product.name: OMEN by HP Laptop 15-dh0xxx dmi.product.sku: 7JX54EA#ABD dmi.sys.vendor: HP mtime.conffile..etc.modprobe.d.alsa-base.conf: 2020-04-24T12:32:21.613996 To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1874698/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp