DKMS

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 1. Open a terminal by Ctrl + Alt + T, execute `sudo update-secureboot-policy` and then select '''Yes''' {{attachment:update-secureboot-policy.png}}  1. Open a terminal by '''Ctrl + Alt + T''', execute '''sudo update-secureboot-policy''' and then select '''Yes''' {{attachment:update-secureboot-policy.png}}
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 6. Press the corresponding password character and press Enter. Repeat this step several times to confirm previous temporary password like '''12345678''' in step 2&3. For exmaple, '''2''' for this screen {{attachment:enter_password.png}}  6. Press the corresponding password character and press Enter. Repeat this step several times to confirm previous temporary password like 12345678 in Step '''2''' and Step '''3'''. For exmaple, 2 shown in below picture {{attachment:enter_password.png}}

DKMS will not work after 3.19.0-65 or above Kernel

DKMS will not work after 3.19.0-65 or above Kernel if secure boot is enabled. To make DKMS works, you could do one of following method:

Method 1 - Disable Secure Boot from BIOS

  1. Enter BIOS setup
  2. Disable secure boot
  3. Save configuration
  4. Reboot the system

Method 2 - Purge 3.19.0-65 kernel before long term solution fix from Kernel is released

  1. sudo apt-get purge linux-image-3.19.0-65-generic
  2. Reboot the system

Method 3 - Select 3.19.0-64.72 kernel to boot up system from GRUB before long term solution fix from Kernel is released

  1. Press Esc after Dell logo show off to enter GRUB
  2. Select 3.19.0-64.72 kernel to boot up system

Method 4 - Disable Secure Boot in shim-signed

  1. Open a terminal by Ctrl + Alt + T, execute sudo update-secureboot-policy and then select Yes update-secureboot-policy.png

  2. Enter a temporary password between 8 to 16 digits. (For example, 12345678, we will use this password later.)Enter_a_temporary_password.png

  3. Enter the same password again to confirmconfirm_password.png

  4. Reboot the system and press any key when you see the blue screen (MOK management) press_any_key.png

  5. Select Change Secure Boot state change_secureboot_state.png

  6. Press the corresponding password character and press Enter. Repeat this step several times to confirm previous temporary password like 12345678 in Step 2 and Step 3. For exmaple, 2 shown in below picture enter_password.png

  7. Select Yes to disable Secure Boot in shim-signed select_yes.png

  8. Press Enter key to finish the whole procedure press_enter_key.png

  9. We can still enable Secure Boot in shim-signed again. Just execute sudo update-secureboot-policy --enable and then follow the similar steps above

UEFI/SecureBoot/DKMS (last edited 2018-06-26 19:53:49 by cyphermox)