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Groups > linux.debian.user > #270732

GUI-Login on bookworm-VM in a cloud

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Hello,

I use the cloud solution OpenNebula to manage VMs in a cloud. There I
have several VMs with Debian 11 running successfully,
sddm, lightdm and gdm3 are installed as display managers. When I choose
one of them, the corresponding GUI login is displayed in the VNC
display of the VM.

However, after installing a VM with Debian 12, none of these three
display managers shows its GUI login screen after boot. With sddm it is
noticeable that the process sddm-helper crashes shortly after it is
started.

To get to the bottom of the problem, I upgraded a bullseye VM
to a bookworm VM step by step: first libc, then the Xorg-
packages, then the kernel, then sddm, lightdm and gdm3, and finally the
rest. Unfortunately, it was only after the rest that the GUI login no
longer appeared; therefore I am not really any further with the answer
to the question what exactly the problem is.

No matter what I tell qemu what video driver to use
(cirrus, vga, vmvga, virtio), the problem occurs with all of them.
On a real hardware the graphical login is displayed, with the same
software packages.

Can anyone help?

Regards
  Christoph

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Thread

GUI-Login on bookworm-VM in a cloud Christoph Pleger <Christoph.Pleger@cs.tu-dortmund.de> - 2024-07-02 13:50 +0200
  Re: GUI-Login on bookworm-VM in a cloud George at Clug <Clug@goproject.info> - 2024-07-03 06:30 +0200
    Re: GUI-Login on bookworm-VM in a cloud Christoph Pleger <Christoph.Pleger@cs.tu-dortmund.de> - 2024-07-03 09:50 +0200
      Re: GUI-Login on bookworm-VM in a cloud  George at Clug <Clug@goproject.info> - 2024-07-04 03:10 +0200
        Re: GUI-Login on bookworm-VM in a cloud George at Clug <Clug@goproject.info> - 2024-07-04 04:40 +0200
          Re: GUI-Login on bookworm-VM in a cloud Christoph Pleger <Christoph.Pleger@cs.tu-dortmund.de> - 2024-07-04 09:20 +0200
  Re: GUI-Login on bookworm-VM in a cloud Christoph Pleger <Christoph.Pleger@cs.tu-dortmund.de> - 2024-07-04 17:20 +0200
    Re: GUI-Login on bookworm-VM in a cloud George at Clug <Clug@goproject.info> - 2024-07-05 10:40 +0200
      Re: GUI-Login on bookworm-VM in a cloud Christoph Pleger <Christoph.Pleger@cs.tu-dortmund.de> - 2024-07-05 12:50 +0200
        Re: GUI-Login on bookworm-VM in a cloud George at Clug <Clug@goproject.info> - 2024-07-05 17:10 +0200
          Re: GUI-Login on bookworm-VM in a cloud Christoph Pleger <Christoph.Pleger@cs.tu-dortmund.de> - 2024-07-08 15:20 +0200
            Re: GUI-Login on bookworm-VM in a cloud George at Clug <Clug@goproject.info> - 2024-07-08 17:00 +0200

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