I reproduced this with Win10 x64 up to date on 4/11/2020 and the stock "quick create" versions of Ubuntu 18.04 and 19.10 as referenced and selected from the Hyper-V manager. Default options all the way. No updates installed after initial installation. This machine has AMD Ryzen 7 3800X and 32GB memory, NVMe SSD system drive -- it's fast. Default network adapter for the VMs. ipv6 enabled or disabled on underlying NIC and the vEthernet default switch (I tried both ways). 18.04 goes from "start" to X login in 11 seconds, including having to press through a console "error: no such device: root / press any key to continue" glitch. 19.10 goes from start to a Grub menu in about 3 seconds. 11 more seconds through console message about Spectre mitigation, then the Ubuntu splash screen of 5 dots on purple background, then console cursor holds for about 1:40. Then X login finally. System load during the long delay on network, disk, CPU under 5% during this time. Then suddenly a flurry of console messages followed by X login window. Seems very clear that the boot process is waiting for a long failed timeout somehow before proceeding.
By accident I discovered the following with 19.10. Select "system startup" from the grub menu. Result is Windows logo screen "Hyper-V UEFI / No boot devices were found." The "restart" button is not functional, have to "power off" the VM because "shutdown" fails. Re-power on without closing the connection window, and 19.10 proceeds through same sequence from "start" to X login in about 12 seconds: spectre mitigation message on console, Ubuntu splash, console cursor, then possibly the flurry of console messages (but so fast invisible), then X login. I can get through the sequence above of grub "system startup" then power-off, then restart to the X login from scratch in 25 seconds, whereas about 120 seconds if I just start and wait through the timeout. -- 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/1848534 Title: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts Status in gdm3 package in Ubuntu: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: AFter upgrade system shows graphic artefacts for a moment and then text cursor for about minute (it looks like hanged) and then starts. In 19.04 startup required 1 or 2 seconds. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: ubuntu-release-upgrader-core 1:19.10.15 ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1 Uname: Linux 5.3.0-18-generic x86_64 ApportVersion: 2.20.11-0ubuntu8 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Thu Oct 17 17:42:27 2019 InstallationDate: Installed on 2019-07-04 (104 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: dist-upgrade UpgradeStatus: Upgraded to eoan on 2019-10-17 (0 days ago) VarLogDistupgradeLspcitxt: VarLogDistupgradeXorgFixuplog: INFO:root:/usr/bin/do-release-upgrade running INFO:root:No xorg.conf, exiting --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu8 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME DistUpgraded: 2019-10-17 17:03:47,139 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: eoan DistroRelease: Ubuntu 19.10 DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: InstallationDate: Installed on 2019-07-04 (105 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: MachineType: Microsoft Corporation Virtual Machine Package: xorg-server (not installed) ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-18-generic root=UUID=17409d40-25e9-4051-9fd9-758e2a02ebc3 ro quiet splash video=hyperv_fb:1900x900 elevator=noop vt.handoff=7 ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1 RelatedPackageVersions: linux-restricted-modules-5.3.0-18-generic N/A linux-backports-modules-5.3.0-18-generic N/A linux-firmware 1.183 RfKill: Tags: eoan ubuntu Uname: Linux 5.3.0-18-generic x86_64 UpgradeStatus: Upgraded to eoan on 2019-10-17 (0 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 01/30/2019 dmi.bios.vendor: Microsoft Corporation dmi.bios.version: Hyper-V UEFI Release v4.0 dmi.board.asset.tag: None dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: Hyper-V UEFI Release v4.0 dmi.chassis.asset.tag: 2831-3616-6111-5725-4803-1162-28 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: Hyper-V UEFI Release v4.0 dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev4.0:bd01/30/2019:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev4.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev4.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev4.0: dmi.product.family: Virtual Machine dmi.product.name: Virtual Machine dmi.product.sku: None dmi.product.version: Hyper-V UEFI Release v4.0 dmi.sys.vendor: Microsoft Corporation version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.99-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.1-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 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/gdm3/+bug/1848534/+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
