~ % sudo downgrade linux linux-headers
:: Retrieving packages...
 linux-headers-6.12.7.arch1-1-x86_64                                              26.7 MiB  11.1 MiB/s 00:02 [#################################################################] 100%
loading packages...
warning: downgrading package linux (6.14.7.arch2-1 => 6.12.7.arch1-1)
warning: downgrading package linux-headers (6.14.7.arch2-1 => 6.12.7.arch1-1)
resolving dependencies...
looking for conflicting packages...

Packages (2) linux-6.12.7.arch1-1  linux-headers-6.12.7.arch1-1

Total Installed Size:   273.94 MiB
Net Upgrade Size:      -100.48 MiB

:: Proceed with installation? [Y/n] y
(2/2) checking keys in keyring                                                                               [#################################################################] 100%
(2/2) checking package integrity                                                                             [#################################################################] 100%
(2/2) loading package files                                                                                  [#################################################################] 100%
(2/2) checking for file conflicts                                                                            [#################################################################] 100%
(2/2) checking available disk space                                                                          [#################################################################] 100%
:: Running pre-transaction hooks...
(1/2) Removing linux initcpios...
(2/2) Remove DKMS modules
==> dkms remove --no-depmod openrazer-driver/3.10.3 -k 6.14.7-arch2-1
==> depmod 6.14.7-arch2-1
:: Processing package changes...
(1/2) downgrading linux                                                                                      [#################################################################] 100%
(2/2) downgrading linux-headers                                                                              [#################################################################] 100%
:: Running post-transaction hooks...
(1/6) Arming ConditionNeedsUpdate...
(2/6) Updating module dependencies...
(3/6) Install DKMS modules
==> dkms install --no-depmod openrazer-driver/3.10.3 -k 6.12.7-arch1-1
==> dkms install --no-depmod nvidia/565.77 -k 6.12.7-arch1-1
==> depmod 6.12.7-arch1-1
(4/6) Updating linux initcpios...
==> Building image from preset: /etc/mkinitcpio.d/linux.preset: 'default'
==> Using default configuration file: '/etc/mkinitcpio.conf'
  -> -k /boot/vmlinuz-linux -g /boot/initramfs-linux.img
==> Starting build: '6.12.7-arch1-1'
  -> Running build hook: [base]
  -> Running build hook: [udev]
  -> Running build hook: [autodetect]
  -> Running build hook: [microcode]
  -> Running build hook: [modconf]
  -> Running build hook: [keyboard]
  -> Running build hook: [keymap]
  -> Running build hook: [consolefont]
==> WARNING: consolefont: no font found in configuration
  -> Running build hook: [block]
  -> Running build hook: [lvm2]
  -> Running build hook: [filesystems]
  -> Running build hook: [fsck]
==> Generating module dependencies
==> Creating zstd-compressed initcpio image: '/boot/initramfs-linux.img'
  -> Early uncompressed CPIO image generation successful
==> Initcpio image generation successful
==> Running post hooks
  -> Running post hook: [sbctl]
Signing /boot/vmlinuz-linux
✓ Signed /boot/vmlinuz-linux
==> Post processing done
==> Building image from preset: /etc/mkinitcpio.d/linux.preset: 'fallback'
==> Using default configuration file: '/etc/mkinitcpio.conf'
  -> -k /boot/vmlinuz-linux -g /boot/initramfs-linux-fallback.img -S autodetect
==> Starting build: '6.12.7-arch1-1'
  -> Running build hook: [base]
  -> Running build hook: [udev]
  -> Running build hook: [microcode]
  -> Running build hook: [modconf]
  -> Running build hook: [keyboard]
==> WARNING: Possibly missing firmware for module: 'xhci_pci_renesas'
  -> Running build hook: [keymap]
  -> Running build hook: [consolefont]
==> WARNING: consolefont: no font found in configuration
  -> Running build hook: [block]
==> WARNING: Possibly missing firmware for module: 'aic94xx'
==> WARNING: Possibly missing firmware for module: 'bfa'
==> WARNING: Possibly missing firmware for module: 'qed'
==> WARNING: Possibly missing firmware for module: 'qla1280'
==> WARNING: Possibly missing firmware for module: 'qla2xxx'
==> WARNING: Possibly missing firmware for module: 'wd719x'
  -> Running build hook: [lvm2]
  -> Running build hook: [filesystems]
  -> Running build hook: [fsck]
==> Generating module dependencies
==> Creating zstd-compressed initcpio image: '/boot/initramfs-linux-fallback.img'
  -> Early uncompressed CPIO image generation successful
==> Initcpio image generation successful
==> Running post hooks
  -> Running post hook: [sbctl]
Signing /boot/vmlinuz-linux
File has already been signed /boot/vmlinuz-linux
==> Post processing done
(5/6) Updating NVIDIA module in initcpio
(6/6) Signing EFI binaries...
Generating EFI bundles....
File has already been signed /boot/EFI/BOOT/BOOTX64.EFI
File has already been signed /boot/grub/x86_64-efi/core.efi
File has already been signed /boot/grub/x86_64-efi/grub.efi
add linux to IgnorePkg? [y/N] n
add linux-headers to IgnorePkg? [y/N] n