This issue is caused by the Dell machines have already embedded the MokSBStatesRT variable with EFI_VARIABLE_NON_VOLATILE attribute, and the new shim-signed 1.21.4 include the patch which will mirror the MokSBStatesRT when MokSBState exists, see the https://github.com/rhinstaller/shim/commit/8f1bd605d05077a76502de5510cc937c4f4c62dd, and it causes the setvariable MokSBStatesRT failed because it has already existed with different attribute.
Attached the patch which can be used to solve this issue by checking the MokSBStateRT existence and deleting it before mirroring it. This patch had been sent to upstream and wait for feedback. ** Patch added: "0001-shim-fix-the-mirroring-MokSBState-fail.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1644806/+attachment/4784570/+files/0001-shim-fix-the-mirroring-MokSBState-fail.patch -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1644806 Title: Proposed shim package will cause system complain "Failed to set MokSBStateRT: (2) Invalid Parameter" Status in linux package in Ubuntu: Confirmed Status in shim-signed package in Ubuntu: New Bug description: CID: 201606-22528 The proposed shim package will cause this laptop complain about: "Failed to set MokSBStateRT: (2) Invalid Parameter" on boot. You will see a blue screen after the Dell logo (please find the attached screenshot). Hit ok will continue to boot. BIOS setting UEFI + SecureBoot Enabled Steps: 1. Install 14.04.1 + dist-upgrade 2. Reboot to see if everything is ok 3. Enable proposed + dist-upgrade 4. Reboot, and you will see this issue ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-49-generic 4.4.0-49.70 ProcVersionSignature: Ubuntu 4.4.0-49.70-generic 4.4.30 Uname: Linux 4.4.0-49-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1611 F.... pulseaudio CurrentDesktop: Unity Date: Fri Nov 25 07:03:10 2016 HibernationDevice: RESUME=UUID=b1256199-2e00-45a5-999c-0b81ea3fcfa6 InstallationDate: Installed on 2016-11-25 (0 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 0cf3:e005 Atheros Communications, Inc. Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 001 Device 002: ID 1bcf:28c0 Sunplus Innovation Technology Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Vostro 15-3568 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-49-generic.efi.signed root=UUID=f6e40ce3-8944-47c0-ac5d-592570800352 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-49-generic N/A linux-backports-modules-4.4.0-49-generic N/A linux-firmware 1.157.5 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/22/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 01.00.00 dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr01.00.00:bd07/22/2016:svnDellInc.:pnVostro15-3568:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: Vostro 15-3568 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1644806/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
