Re: SID KDE Plasma 6.2

On Sun, Dec 1, 2024 at 9:42 PM George at Clug <Clug@goproject.info> wrote:

On Monday, 02-12-2024 at 03:20 Timothy M Butterworth wrote:
> On Sun, Dec 1, 2024 at 10:12 AM George at Clug <Clug@goproject.info> wrote:
>
> >
> >
> > On Sunday, 01-12-2024 at 21:40 Timothy M Butterworth wrote:
> > > All,
> > >
> > > You may want to avoid upgrading KDE Plasma to 6.2 in sid. I upgraded it
> > > earlier and after a reboot I only get a black screen when logging in.
> >
> > Whenever someone says, KDE Plasma and black screen together, I think
> > "nvidia drivers".
> >
> > I doubt that is your issue. But do you have an Nvidia GPU in the computer?
> >
> > George.
> >
>
> No, I do not have Nvidia. I have Sid in a VM. The black screen is strange
> because I have a visible mouse pointer. I also get crash reporter popups.
>

"A black screen with only a visible mouse pointer" is one of the issues I have seen on computers with an Nvidia GPU, hence to me it was likely you had an Nvidia GPU, since you do not, then I suspect that the issue is related to the Graphics type that you have selected for your VM, maybe changing this to virtio and enabling OpenGL?

FYI: My Debian Testing VM with KDE Plasma Wayland is working well after updates.

What GPU does your computer have?, and what Graphics system is your VM using? (Which graphics driver and Display protocol do you use ?)

I have AMD with OpenAMD GPU Driver.

Were you using a Wayland session or an X11 session?

Wayland

Do you get to see the SDDM login screen or is that black with a mouse pointer, too?

SDDM works fine

I use a Radeon RX 6600 GPU. In Virt-Manager, my Display is Spice server, Address, Hypervisor default, Port set to Auto. OpenGL is not selected.

On my Debian Bookworm i7 Intel computer, I had a Debian Testing VM with Cinnamon, so I cloned this VM, ran updates and then installed kde-full. During the installation I selected "sddm" for the default display manager.

When I rebooted I could see the SDDM login screen, and for the "Session", I selected Plasma (Wayland), then logged in normally. Everything was working as expected.

If I selected the QXL video type, then when I booted up, the VM hung during loading and no mouse pointer. When I changed back to the virtio driver, all worked well and I was able log in and watch youtube videos.

Please let me know if I can help.

I just use the VM to do testing of the installer and updates. I am just going to waite a week or so then do a clean install.

Here are my VM settings for the display

<graphics type="spice" port="5900" autoport="yes" listen="127.0.0.1">
<listen type="address" address="127.0.0.1"/>
<image compression="off"/>
</graphics>

<video>
<model type="virtio" heads="1" primary="yes"/>
<alias name="video0"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0"/>
</video>

----------------------------------

When using Cinnamon I usually enable "OpenGL" too, so I tried this too.

<video>
<model type="virtio" heads="1" primary="yes">
    <acceleration accel3d="yes"/>
</model>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0"/>
</video>

<graphics type="spice">
<listen type="none"/>
<image compression="off"/>
<gl enable="yes" rendernode="/dev/dri/by-path/pci-0000:03:00.0-render"/>
</graphics>

===========================================================================

# apt update && apt update && apt full-upgrade --autoremove -y && apt autoremove -y && apt clean
Hit:1 http://security.debian.org/debian-security testing-security InRelease
Hit:2 http://deb.debian.org/debian testing InRelease
Hit:3 http://deb.debian.org/debian testing-updates InRelease
Hit:4 http://deb.debian.org/debian testing-backports InRelease
All packages are up to date.
Hit:1 http://security.debian.org/debian-security testing-security InRelease
Hit:2 http://deb.debian.org/debian testing InRelease
Hit:3 http://deb.debian.org/debian testing-updates InRelease
Hit:4 http://deb.debian.org/debian testing-backports InRelease
All packages are up to date.
Summary:
Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
Summary:
Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0

# lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux trixie/sid
Release:        n/a
Codename:       trixie

# uname -r
6.11.10-amd64

# env | grep -E -i 'x11|xorg|wayland|plasma'
DESKTOP_SESSION=plasmawayland
MEMORY_PRESSURE_WATCH=/sys/fs/cgroup/user.slice/user-1004.slice/user@1004.service/session.slice/plasma-plasmashell.service/memory.pressure
WAYLAND_DISPLAY=wayland-0
PLASMA_USE_QT_SCALING=1
QT_WAYLAND_FORCE_DPI=96

# lspci -k | grep -A 2 -E '(3D|VGA)'
00:01.0 VGA compatible controller: Red Hat, Inc. Virtio 1.0 GPU (rev 01)
        Subsystem: Red Hat, Inc. Device 1100
        Kernel driver in use: virtio-pci

===========================================================================

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