** Tags added: regression-update -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1893694
Title: Latest update breaks booting Status in linux-firmware package in Ubuntu: New Bug description: Regular package updates today brought these packages (and a few libpam-XXX): grub-common:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3) grub2-common:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3) grub-pc:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3) grub-pc-bin:amd64 (2.04-1ubuntu26.2, 2.04-1ubuntu26.3) linux-firmware:amd64 (1.187.2, 1.187.3) After the following reboot, the machine would no longer come up. It got past Grub, but instead of Ubuntu logo appearing a second later, screen would stay entirely black. I waited at least 5 minutes, no change. I ended this with the power button. Subsequent tries in recovery mode and/or with the previous kernel didn't boot, either. The same machine would boot off an installation medium (USB pen drive) or the other connected hard disk just fine. Boot drive selection was done in BIOS. After a lot of back and forth, I ended up downgrading the above packages using the root shell in recovery mode: linux-firmware to v1.187 (v1.187.2 was not available), all four Grub packages to 2.04-1ubuntu26.2. With this, machine boots fine again. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-firmware 1.187 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mah 1487 F.... pulseaudio /dev/snd/pcmC0D0p: mah 1487 F...m pulseaudio /dev/snd/controlC1: mah 1487 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Mon Aug 31 22:20:10 2020 Dependencies: InstallationDate: Installed on 2016-05-04 (1580 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) IwConfig: lo no wireless extensions. enp0s25 no wireless extensions. MachineType: Dell Inc. Vostro 200 PackageArchitecture: all ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=0e33bd99-d89c-4abe-8f18-10d9206ef547 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-42-generic N/A linux-backports-modules-5.4.0-42-generic N/A linux-firmware 1.187 RfKill: SourcePackage: linux-firmware UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/20/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.16 dmi.board.name: 0CU409 dmi.board.vendor: Dell Inc. dmi.board.version: ��� dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: OEM dmi.modalias: dmi:bvnDellInc.:bvr1.0.16:bd09/20/2008:svnDellInc.:pnVostro200:pvr:rvnDellInc.:rn0CU409:rvr:cvnDellInc.:ct3:cvrOEM: dmi.product.name: Vostro 200 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1893694/+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