Based on comments #20 to #23 in bug 1853369, I think the root cause for Joseph's device is a regression in intel-microcode package. While I don't have enough info to determine whether bug 1853369 actually shares the same root cause, the duplication relationship is removed so that I can work on this issue separately first.
** This bug is no longer a duplicate of bug 1853369 [19.10] Boot hangs at "loading initial ramdisk" ** Also affects: intel-microcode (Ubuntu) Importance: Undecided Status: New ** No longer affects: linux (Ubuntu) -- 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/1858810 Title: [19.10] Boot hangs at "loading initial ramdisk" Status in intel-microcode package in Ubuntu: Incomplete Bug description: My laptop hangs on "loading initial ramdisk" at startup. However, it start up without any problems when the power supply is connected 0_o … ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.3.0-26-generic 5.3.0-26.28 ProcVersionSignature: Ubuntu 5.3.0-26.28-generic 5.3.13 Uname: Linux 5.3.0-26-generic x86_64 ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jmaillar 2529 F.... pulseaudio /dev/snd/controlC1: jmaillar 2529 F.... pulseaudio CurrentDesktop: GNOME Date: Wed Jan 8 16:22:21 2020 EcryptfsInUse: Yes HibernationDevice: RESUME=none MachineType: Dell Inc. Precision 7530 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-26-generic root=UUID=b21fab6e-02fe-4295-a308-9da15f339a36 ro tpm_tis.interrupts=0 RelatedPackageVersions: linux-restricted-modules-5.3.0-26-generic N/A linux-backports-modules-5.3.0-26-generic N/A linux-firmware 1.183.3 SourcePackage: linux UpgradeStatus: Upgraded to eoan on 2019-10-22 (78 days ago) dmi.bios.date: 11/11/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.12.1 dmi.board.name: 0425K7 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.12.1:bd11/11/2019:svnDellInc.:pnPrecision7530:pvr:rvnDellInc.:rn0425K7:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Precision dmi.product.name: Precision 7530 dmi.product.sku: 0831 dmi.sys.vendor: Dell Inc. modified.conffile..etc.default.apport: [modified] mtime.conffile..etc.default.apport: 2015-11-27T14:42:56.796345 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1858810/+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