Since Alt-SysRq-w gives nothing, I'm sure the long delay is not a
kernel/driver issue but a user space issue. It looks due to some reason
I just can not reproduce the long delay. :-(
In the Hyper-V Virtual Machine Connection window's "View" menu, there is
an item "Enhanced Session". In my Ubuntu 19.10 VM created by "Quick
Create...", the xrdp daemon/service is configured to automatically run
during the boot-up procedure; I think as soon as the xrdp daemon starts
to run, the "Enhanced Session" item becomes clickable/usable, and I can
click it to toggle between "Enhanced Session" mode (i.e. xrdp mode) and
the native Xorg GUI mode; when I'm in the xrdp mode, I click VM
Connection window's Action | Shut Down, then Start, and the VM will boot
up to the xrdp login screen in about 14 seconds; when I'm in the Xorg
mode, I click Shutdown then Start, the VM will boot up to the Xorg GUI
desktop in about 30 seconds. If I shut down the VM, close the VM
Connection window, and start the VM and open VM Connection window, I'll
be prompted by a small pop-up window to choose a resolution when (I
think) the xrdp daemon starts to run: 1) if I click the close icon of
the small window, I'll be in the Xorg GUI mode; if I accept the default
resolution (or change to a different resolution) and click "connect" in
the small window, I'll be in the xrdp mode. So all these work pretty
good for me.
Note: after I just created the 19.10 VM by "Quick Create..." and set up
the host name and user name/password stuff, I rebooted the VM and when
the VM booted up, I found the "Enhanced Session" was not
clickable/usable -- this looks like a bug -- while I still don't know
the root cause, it looks this can be resolved by manually adding the
line "initrd /boot/initrd.img-5.3.0-23-generic #This line is
added by Dexuan manually" into "/boot/grub/grub.cfg":
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os
$menuentry_id_option 'gnulinux-simple-55829715-0091-4b86-b060-1cb88f342faf' {
...
if [ "${initrdfail}" = 1 ]; then
linux /boot/vmlinuz-5.3.0-23-generic
root=PARTUUID=43e99d31-1277-402c-a13b-6cc8fb93169b ro quiet splash $vt_handoff
initrd /boot/initrd.img-5.3.0-23-generic
else
linux /boot/vmlinuz-5.3.0-23-generic
root=PARTUUID=43e99d31-1277-402c-a13b-6cc8fb93169b ro quiet splash $vt_handoff
panic=-1
initrd /boot/initrd.img-5.3.0-23-generic #This line is added
by Dexuan manually!!!
fi
initrdfail
}
With the addition of the line, it looks "GRUB_TIMEOUT=0" in "/etc/default/grub"
is always really applied every time I reboot the VM.
Without the line, it looks sometimes the grub timeout is 30 second and
sometimes it's 0 second.
BTW, I reported a bug for the missing initrd line a few weeks ago for a
different issue: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1870189.
I suggest you also manually add the line, then I guess you should be
able to reliably toggle between xrdp mode and Xorg mode.
Note: "/boot/grub/grub.cfg" is overwritten when update-grub is run by us
or some automatic-update daemon, so we may want to check if the line is
still there when we see something unexpected (i.e. unable to use xrdp
mode, or see a grub timeout of 30s). I hope Bug 1870189 will be fixed by
somebody ASAP...
--
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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
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