[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
This is the screenshot of the graphic artifact mentioned in the previous comment. ** Attachment added: "graphic_artifact.png" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+attachment/5352858/+files/graphic_artifact.png -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
Today I installed a Generation-2 VM (4 virtual CPUS, 4 GB memory) from the this .iso file: http://releases.ubuntu.com/19.10/ubuntu-19.10-desktop-amd64.iso. My host is Win10: Version 1909 (OS Build 18383.720) -- I got the info by running the built-in "winver.exe" program. The CPU type is Intel Core I7-7600 (2.80G Hz). There are 2 cores and the cores support SMT, so there are 4 logical processors in total. I can see the "graphic artifact" (I will upload a screenshot soon), but it looks overall the boot-up is fast (it takes 30 seconds) and it looks the VM works fine for me. When the VM boots up: 1. First, the screen with the purple background (I think it's from grub) remains 4 seconds. 2. The screen background becomes black, and there is a "Hyper-V" logo in the center of the screen. This remains about 1 second. 3. The screen with the "graphic artifact" appears, and remains about 4 seconds. 4. The screen background becomes purple and the "Ubuntu" logo with 5 dots appears. This screen remains 8 seconds. 5. The screen becomes completely black. This screen remains 9 seconds. 6. The screen becomes kind of purple again, and in about 2 seconds the GUI desktop appears (I set Ubuntu to automatically login in to the desktop). So the overall time spent on the 6 steps are 30 seconds. IMO this looks normal. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
BTW, my Linux kernel version is 5.3.0-46-generic #38-Ubuntu (17:37:05, 3/27/2020). The "graphic artifact" is somehow caused by the "$vt_hanoff" kernel parameter (check "cat /proc/cmdline"). If I manually remove the "$vt_hanoff" at the grub screen, I won't see the "graphic artifact" -- Ubuntu guys should take a look and fix the issue, as I'm not familiar with "vt_handoff". @msgallery: I never see the "1:40" (1 minutes and 40 seconds) delay reported in comment #40. Maybe you can use "systemd-analyze critical- chain" (mentioned in Comment #25) to figure out why the delay happened. To recap, my experience with the fresh Desktop installation of Ubuntu 19.10 (Gen-2 VM) on Hyper-V is good, except for the minor "graphic artifact" issue. I don't see any long delay. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
@msgallery: BTW, you mentioned 'The "restart" button is not functional' -- actually it is not functional only when we try to click the button by mouse -- if we press Tab to focus on the button and then press Enter, the VM should reboot. :-) I'll try to mention this to Hyper-V team, but I'm not sure when they will fix this minor issue, since the issue should be of low priority. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
It looks #48 shows some service is causing the long delay -- can you try 'systemctl list-jobs' to see active jobs, as the "Hint" says? :-) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
I created a Ubuntu 19.10 VM via "Quick Create..." and still can not reproduce the long delay of > 1 minute: the VM can boot up to the Xorg GUI desktop in 26 seconds. My Windows 10 has the same version info: Version 1909 (OS Build 18363.778). At the grub screen, can you press 'e' and, manually edit the kernel parameter: please remove the "quiet splash $vt_handoff" and add "ignore_loglevel sysrq_always_enabled". You may want to enable the serial console logging by adding the kernel parameter "console=ttyS0", and attach putty (Run as Administrator) to the named pipe \\.\pipe\debug_slow_vm, assuming you configure the VM serial console by "Set-VMComPort -VMName your_vm_name -number 1 -path \\.\pipe\debug_slow_vm"). This way, you should get more messages on the VM serial console when the VM boots up. When you see the long delay, you can press SysRQ+w (i.e. the Right Alt + SysRq + w) to show the blocked processes, if any. This may provide more info about the long delay. BTW, here I assume your have a keyboard that has the SysRq key. :-) It looks systemd can be configured to use "--log-level=debug --default- standard-output=kmsg --default-standard-error=kmsg", which may provide more info as well, if we check 'dmesg' and/or the VM serial console. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
Sorry, I did miss this part of your previous reply: root@stock19:~# systemctl list-jobs JOB UNIT TYPE STATE 48 setvtrgb.service start waiting 137 system-getty.slice start waiting 1 graphical.target start waiting 102 systemd-update-utmp-runlevel.service start waiting 83 plymouth-quit-wait.service start running 2 multi-user.target start waiting I'm wondering if you can disable setvtrgb.service, system-getty.slice, systemd-update-utmp-runlevel.service, and plymouth-quit-wait.service, and see if the long delay will disappear. I guess these 4 services don't look critical to the GUI desktop. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
I also tried xrdp mode and the VM booted up to the xrdp login window in 14 seconds, which is faster than the "native Xorg GUI mode" (which needs 30s) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
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
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[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
I don't have much knowledge bout systemd, either :-) I just did a "man systemd" and found the options of systemd. "man systemd" says that we can use pass these kernel parameters to systemd: systemd.service_watchdogs=true systemd.show_status=true systemd.log_level=debug systemd.dsystemd.default_standard_output=kmsg systemd.default_standard_error=kmsg I tried these by adding them into /boot/grub/grub.cfg manually, at the end of the line "linux /boot/vmlinuz-5.3.0-23-generic ...". I also replaced "quiet splash $vt_handoff" with "ignore_loglevel". So I can get more messages from systemd, but not so much as I expected. Not sure if this would be helpful to troubleshoot the long delay issue for you, and I'm not even sure if I enabled the systemd loggong completely correctly -- again, I'm not really familiar with systemd. :-) To stop/disble a systemd "service", I think we can use something like this (taking the setvtrgb.service as an example): systemctl stop setvtrgb.service systemctl disable setvtrgb.service systemctl status setvtrgb.service -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
Sorry, I made a typo above: systemd.dsystemd.default_standard_output=kmsg ==> systemd.default_standard_output=kmsg. BTW, it looks systemd.show_status=true makes no difference for me. I don't see any status info during the boot-up time -- not sure if I did something wrong. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1848534] Re: [Microsoft Hyper-V guest] System shows graphic artifacts for a moment, then text cursor for about minute and then starts
Thanks for the reminder! I just realized Ubuntu 20.02 was already released on 4/23. We should try it. For the CPU firmware (CPU microcode?) update issue: sorry, it's completely out of my scope -- I only work on Linux. Hopefully that issue will be resolved in the near future. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1848534/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1251281] Re: gnome-session-flashback/Unity fails to start without hardware acceleration in cloud/remote environments (Forwarded-X/XRDP/VNC/NX/X2GO/Chromoting)
Hi, I'm using "Ubuntu 14.04.2 LTS", is there a .deb package I can directly "dpkg -i"? Or, can I use "apt-get install xxx" to get the updated correct binary? Thanks a lot! -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1251281 Title: gnome-session-flashback/Unity fails to start without hardware acceleration in cloud/remote environments (Forwarded-X/XRDP/VNC/NX/X2GO/Chromoting) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-session/+bug/1251281/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
