Something has gone seriously wrong: import_mok_state() failed: Volume Full

Hi everyone,

I’m using a Dell G15 5515 Ryzen Edition and I’ve been trying to set up a dual-boot with Windows and Arch Linux while keeping Secure Boot enabled. When I try to enroll a MOK for Linux, I get this error during boot:

Could not create MokListRT: Volume FullCould not create MokListXRT: Volume FullCould not create SbatLevelRT: Volume FullCould not create MokListTrustedRT: Volume FullSomething has gone seriously wrong: import_mok_state() failed: Volume Full

From other forums I’ve read, this is likely a problem with the NVRAM being full. I’ve tried the following options to fix it:

1. Clearing boot entries using efibootmgr

2. Resetting BIOS settings to default

3. Deleting all Secure Boot keys in BIOS and restoring factory keys

4. Reinstalling the BIOS

None of these worked. The strange part is that from Linux, efivarfs doesn’t appear to be full:

❯ df -h /sys/firmware/efi/efivars
Filesystem      Size  Used Avail Use% Mounted on
efivarfs        148K   61K   83K  43% /sys/firmware/efi/efivars

 now, I’ve had to disable Secure Boot just to use my system. Anyone any idea how to solve this issue?