This appears to be intended behaviour. The intel-microcode package is prepending an uncompressed CPIO archive, containing just the microcode for the local processor, in front of the existing compressed initramfs archive.
This is (apparently? in some versions?) supported by the kernel as an input format to allow the microcode update to be applied early in the boot process. Attempting to unpack the resulting combined image with `cpio` will only show the contents of this first archive, and not the second one appended after it. However, if you run `lsinitramfs` on the archive, it will list the contents of both. -- 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/1597762 Title: intel-microcode initramfs-tools hooks mangle initramfs Status in linux package in Ubuntu: Confirmed Bug description: As per summery, I've been trying to get iniitramfs-tools to behave properly on Ubuntu 16.04 for hours and after process of elimination I've found that it's the intel-microcode hooks which are causing problems with update-initramfs, it basically leaves everything else but the microcode update binary and leaves out everything else and causes it to ignore the initramfs compression settings. If you need any more information or logs, please let me know. --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: aidan 2491 F.... pulseaudio /dev/snd/controlC0: aidan 2491 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 16.04 InstallationDate: Installed on 2016-06-29 (0 days ago) InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421) MachineType: ASUS All Series Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-21-generic root=UUID=aeb80f06-5142-4baf-bfa4-74439ea85d33 ro rootflags=subvol=@ console=tty1 console=ttyS0 panic=-1 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 RelatedPackageVersions: linux-restricted-modules-4.4.0-21-generic N/A linux-backports-modules-4.4.0-21-generic N/A linux-firmware 1.157.1 RfKill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no Tags: xenial Uname: Linux 4.4.0-21-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip disk libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/28/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3003 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: MAXIMUS VII GENE dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3003:bd10/28/2015:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnMAXIMUSVIIGENE:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: All Series dmi.product.version: System Version dmi.sys.vendor: ASUS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1597762/+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
