The "invalid signature" problem I think is caused by Secure Boot. Try disabling Secure Boot in your BIOS.
Also sorry again because it sounds like that libc6 problem is going to keep getting in the way. But good news: Kernel 5.11 has now been officially released to Ubuntu 20.04 updates. So you can delete the test kernel packages with: sudo dpkg -P PACKAGENAME1 PACKAGENAME2 .... and then do a system update to get the official update to 5.11: sudo apt update sudo apt full-upgrade -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-5.8 in Ubuntu. https://bugs.launchpad.net/bugs/1937321 Title: System freeze (amdgpu kernel crash on resume from suspend) Status in linux-hwe-5.8 package in Ubuntu: Incomplete Bug description: System freezes after I close the lid on the laptop and leave it closed overnight. It doesn't respond to any key presses or mouse clicks including Ctrl-Alt+F4. my only recourse is to force the power off. Sometimes it has the "suspend" screen showing but mostly it's just black. The Power settings -Dim screen when inactive = yes Blank screen = never Wifi and Bluetooth can be turned off to save power = yes Automatic suspend on battery power = yes Power button action = Power off ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.8.0-63.71~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-63-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Thu Jul 22 17:34:17 2021 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GpuHangFrequency: Several times a week GpuHangReproducibility: Seems to happen randomly GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c2) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Renoir [103c:87cf] InstallationDate: Installed on 2021-06-30 (22 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) MachineType: HP HP Laptop 15-ef1xxx ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-63-generic root=UUID=f66ca4c6-ec88-43af-81a3-7d994d7a217b ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/10/2021 dmi.bios.release: 15.34 dmi.bios.vendor: AMI dmi.bios.version: F.34 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 8707 dmi.board.vendor: HP dmi.board.version: 37.19 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.ec.firmware.release: 37.19 dmi.modalias: dmi:bvnAMI:bvrF.34:bd03/10/2021:br15.34:efr37.19:svnHP:pnHPLaptop15-ef1xxx:pvr:rvnHP:rn8707:rvr37.19:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV HP Notebook dmi.product.name: HP Laptop 15-ef1xxx dmi.product.sku: 27A48UA#ABA dmi.sys.vendor: HP version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.102-1ubuntu1~20.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 20.2.6-0ubuntu0.20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.9-2ubuntu1.2~20.04.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.8/+bug/1937321/+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
