[SOLVED] Black Screen With Cursor At Startup

Underplayer97 · 2025-01-21 15:50:27

I decided to update my system and when I rebooted my computer it started at a black screen with only the cursor. I am using KDE Plasma and SDDM with Intel integrated graphics. I have tried to use "kstart" and it returns this:

[under@PC ~]$ kstart
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin.
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. 

Available platform plugins are: wayland, xcb, minimal, linuxfb, vkkhrdisplay, vnc, wayland-egl, eglfs, minimalegl, offscreen.

Aborted (core dumped)

I then tried to set the platform to wayland and it returned this:

[under@PC ~]$ export QT_QPA_PLATFORM=wayland
[under@PC ~]$ kstart
Failed to create wl_display (No such file or directory)
qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem. 

Available platform plugins are: wayland, xcb, minimal, linuxfb, vkkhrdisplay, vnc, wayland-egl, eglfs, minimalegl, offscreen.

Aborted (core dumped)

I have tried clearing my cache with "rm -rf /.cache/*" and gave no change and deleted my config files. I have also tried reinstalling SDDM and Plasma by removing it and rebooting then installing.
At this point I have no clue on what else to do, does anyone have any ideas?

[EDIT] My OpenGL was broken and caused the issues of things not rendering. I removed llvm17 and all of its extras and it now works.

Last edited by Underplayer97 (2025-01-23 16:39:26)

V1del · 2025-01-21 15:58:16

kstart is wrong in any case, where do you have that from? if you wanted to launch plasma from a tty you'd do https://wiki.archlinux.org/title/KDE#From_the_console Since you seem to be able to get to a terminal post the links you get from

sudo journalctl -b | curl -F 'file=@-' 0x0.st
curl -F 'file=@-' 0x0.st < /var/log/Xorg.0.log

did you try to change your SDDM theme? If you haphazardly do that chances are you get a theme that either isn't compatible entirely anymore or you lacking the optional qt5-declarative dep for using Qt5 themes.

Underplayer97 · 2025-01-21 16:10:24

I haven't changed my SDDM theme. Also I did not realize that kstart was the wrong thing to use, woops. I am currently using xorg's interface at the moment so I can actually run things while I figure this issue out.

sudo journalctl -b | curl -F 'file=@-' 0x0.st

This returns this link.

curl -F 'file=@-' 0x0.st < /var/log/Xorg.0.log

This returns this link.

Underplayer97 · 2025-01-21 16:35:54

I forgot to mention that I attempted to start plasma through the console, this is what it returned:

[under@PC ~]$ /usr/lib/plasma-dbus-run-session-if-needed /usr/bin/startplasma-wayland
org.kde.startup: "kdeinit5_shutdown" QList() exited with code 255
startplasma-wayland: Shutting down...
startplasmacompositor: Shutting down...
startplasmacompositor: Done.

If I tried to go through x11 it just gives me a black screen. Not even a cursor.

V1del · 2025-01-21 16:42:55

Your GL is broken, suspecting another victim of a random mesa-git install (that's the third or fourth time in two weeks, which random tutorial are you all following?) What output do you get from

pacman -Qs 'mesa|llvm' #That's a pipe | followed by two ll (letter L)
printenv

PS: Not directly related but important to deal with, you have conflicting networkmanagers, disable dhcpcd while using networkmanager and you probably want to install sof-firmware if you expect to hear audio out of speakers

Last edited by V1del (2025-01-21 16:44:15)

Underplayer97 · 2025-01-21 16:51:54

My output is this:

[under@PC ~]$ pacman -Qs 'mesa|llvm'
local/clang 19.1.7-1
    C language family frontend for LLVM
local/glu 9.0.3-2
    Mesa OpenGL utility library
local/lib32-llvm-libs 1:19.1.7-1
    LLVM runtime libraries (32-bit)
local/lib32-mesa 1:24.3.3-2
    Open-source OpenGL drivers - 32-bit
local/libc++ 19.1.7-1
    LLVM C++ standard library
local/libc++abi 19.1.7-1
    Low level support for the LLVM C++ standard library
local/llvm-libs 19.1.7-1
    LLVM runtime libraries
local/llvm17 17.0.6-1
    Compiler infrastructure (LLVM 17)
local/llvm17-debug 17.0.6-1
    Detached debugging symbols for llvm17
local/llvm17-libs 17.0.6-1
    LLVM 17 runtime libraries
local/mesa 1:24.3.3-1
    Open-source OpenGL drivers
local/mesa-utils 9.0.0-5
    Essential Mesa utilities

Also I did not realize I had an issue with my network managers, thanks for telling me that. Also the audio for speakers.

V1del · 2025-01-21 16:56:10

Get rid of llvm17/install normal llvm properly. Output of the second command?

Underplayer97 · 2025-01-21 17:05:32

Okay, llvm17 is gone. Woops, I did not realize I forgot to paste the second command:

[under@PC ~]$ printenv
SHELL=/bin/bash
WINDOWID=10485772
XTERM_VERSION=XTerm(397)
XTERM_SHELL=/bin/bash
GTK_MODULES=canberra-gtk-module
XDG_SEAT=seat0
PWD=/home/under
LOGNAME=under
XDG_SESSION_TYPE=tty
XAUTHORITY=/home/under/.Xauthority
WINDOWPATH=3
MOTD_SHOWN=pam
HOME=/home/under
LANG=en_US.UTF-8
XTERM_LOCALE=en_US.UTF-8
GEM_HOME=/home/under/gems
XDG_SESSION_CLASS=user
TERM=xterm
USER=under
DISPLAY=:1
SHLVL=1
XDG_VTNR=3
XDG_SESSION_ID=2
XDG_RUNTIME_DIR=/run/user/1000
DEBUGINFOD_URLS=https://debuginfod.archlinux.org
XDG_DATA_DIRS=/home/under/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share:/var/lib/snapd/desktop
PATH=/home/under/gems/bin:/home/under/gems/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/var/lib/flatpak/exports/bin:
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
MAIL=/var/spool/mail/under
_=/usr/bin/printenv

V1del · 2025-01-21 17:26:41

looks okayish, the GEM path masking /usr/bin:/usr/local/bin sounds like a desaster waiting to happen but maybe normal. What do you get from

glxinfo -B
eglinfo -B

from that xterm.

Underplayer97 · 2025-01-21 17:54:35

This is what returns when I use "glxinfo -B"

[under@PC ~]$ glxinfo -B
name of display: :1
Error: couldn't find RGB GLX visual or fbconfig

For "eglinfo -B"

[under@PC ~]$ eglinfo -B
Default display platform:
eglinfo: eglInitialize failed

seth · 2025-01-21 21:35:55

[    35.208] (II) AIGLX: Screen 0 is not DRI2 capable
[    35.213] (II) IGLX: Loaded and initialized swrast
[    35.213] (II) GLX: Initialized DRISWRAST GL provider for screen 0

The journal is 45MB of relentless plasmashell crashing.

Why is "DISPLAY=:1" the log is from :0?
Why is "XAUTHORITY=/home/under/.Xauthority"? You're using SDDM? This should™ be some tmpfile.
What is "GEM"?

type -a glxinfo
ldd /usr/bin/glxinfo
pacman -Qikk mesa

You can feed those into 0x0.st:

(type -a glxinfo; ldd /usr/bin/glxinfo; pacman -Qikk mesa) | curl -F 'file=@-' 0x0.st

Underplayer97 · 2025-01-22 13:16:10

Why is "DISPLAY=:1" the log is from :0?

My guess is because I'm using virtual consoles so I can actually use things without being stuck in a black screen with a cursor. Though I'm not too sure about that.

Why is "XAUTHORITY=/home/under/.Xauthority"? You're using SDDM? This should™ be some tmpfile.

Not really sure, I'm still figuring things about the system.

What is "GEM"?

The GEM path is for a program called RubyGems. Its for website development.

(type -a glxinfo; ldd /usr/bin/glxinfo; pacman -Qikk mesa) | curl -F 'file=@-' 0x0.st

This returns this link

seth · 2025-01-22 15:58:26

Mesa is intact, no [LD_LIBRARY_]PATH interference.

Not really sure, I'm still figuring things about the system.

What do you mean by figuring things out?
The variable is likely set in some shell rc - and by you?

My guess is because I'm using virtual consoles

No, those are different X11 servers, are you trying to run glxinfo from a TTY login?? The output in #8 shows an xterm environment?

Underplayer97 · 2025-01-22 19:07:50

What do you mean by figuring things out?

What I more of mean is that I don't truly know.

The output in #8 shows an xterm environment?

I'm currently using Xorg at the moment while I try to figure out why plasma is not working. I should have clarified, sorry about that.

From another console not inside Xorg this is what it returns:

[under@PC ~]$ printenv
SHELL=/bin/bash
XDG_SEAT=seat0
PWD=/home/under
LOGNAME=under
XDG_SESSION_TYPE=tty
MOTD_SHOWN=pam
HOME=/home/under
LANG=en_US.UTF-8
XTERM_LOCALE=en_US.UTF-8
GEM_HOME=/home/under/gems
XDG_SESSION_CLASS=user
TERM=linux
USER=under
SHLVL=1
XDG_VTNR=5
XDG_SESSION_ID=5
XDG_RUNTIME_DIR=/run/user/1000
DEBUGINFOD_URLS=https://debuginfod.archlinux.org
XDG_DATA_DIRS=/home/under/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share:/var/lib/snapd/desktop
PATH=/home/under/gems/bin:/home/under/gems/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/var/lib/flatpak/exports/bin:
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
MAIL=/var/spool/mail/under
_=/usr/bin/printenv

[under@PC ~]$ glxinfo -B
Error: unable to open display

[under@PC ~]$ eglinfo -B
Default display platform:
eglinfo: eglInitialize failed

[under@PC ~]$ (type -a glxinfo; ldd /usr/bin/glxinfo; pacman -Qikk mesa) | curl -F 'file=@-' 0x0.st

This is what it returns

Underplayer97 · 2025-01-22 20:04:09

At this point I feel like the system is far too gone and whatever I did to obliterate plasma and sddm is just not worth trying to fix it if it's being this problematic. I might just wipe the drive and reinstall everything. Y'all have any ideas what else to try or it's just better to reinstall everything?

seth · 2025-01-22 20:21:53

glxinfo will only ever work in an X11 environment (resp. when given access to an X11 server) - the output of those three commands does not depend on any context and won't change.

Please post teh X11 log for the server where you ran the xterm and glxinfo posted "Error: couldn't find RGB GLX visual or fbconfig" and then

[    35.098] couldn't get display device

try to add "nvidia_drm.modeset=1" to the https://wiki.archlinux.org/title/Kernel_parameters (yes I know that you don't have an nvidia GPU, this is a magic trick)

Underplayer97 · 2025-01-22 21:09:01

This is the Xorg log

Also after restarting with nvidia_drm.modeset=1 it appears to not have changed anything with starting up, wayland and x11 still appears to have the same issues.

seth · 2025-01-22 21:15:18

The xorg log doesn't reflect that parameter.

[     5.920] couldn't get display device

leads to

[     6.020] (II) AIGLX: Screen 0 is not DRI2 capable
[     6.027] (II) IGLX: Loaded and initialized swrast
[     6.028] (II) GLX: Initialized DRISWRAST GL provider for screen 0

You're not gonna re-install yourself out of that.

Try the behavior w/ the LTS kernel.

Underplayer97 · 2025-01-22 21:39:36

Switched to the LTS kernel and all of the issues persist. The one thing that did change is when I ran KDE Plasma through X11 on console returns this:

[under@PC ~]$ startx /usr/bin/startplasma-x11
$DISPLAY is not set or cannot connect to the X server.

seth · 2025-01-22 21:59:12

Hold on, your OP was suggesting you're using SDDM?
What does the xorg log for the failed startx approach look like?
Also

ls -lR /dev/dri

Underplayer97 · 2025-01-22 22:14:19

Hold on, your OP was suggesting you're using SDDM?

Yes, I am using SDDM for logging into plasma. It is also having the same issue with it being a black screen with a cursor. Though on an attempt to see if I can get into plasma I am trying to start it through the console.

ls -lR /dev/dri

[under@PC ~]$ ls -lR /dev/dri
/dev/dri:
total 0
drwxr-xr-x  2 root root         80 Jan 22 16:31 by-path
crw-rw----+ 1 root video  226,   1 Jan 22 16:31 card1
crw-rw-rw-  1 root render 226, 128 Jan 22 16:31 renderD128

/dev/dri/by-path:
total 0
lrwxrwxrwx 1 root root  8 Jan 22 16:31 pci-0000:00:02.0-card -> ../card1
lrwxrwxrwx 1 root root 13 Jan 22 16:31 pci-0000:00:02.0-render -> ../renderD128

What does the xorg log for the failed startx approach look like?

Here is the new log file: http://0x0.st/8Xzd.txt

seth · 2025-01-22 22:20:05

[     6.687] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Jan 22 16:31:46 2025

startx logs of non-root users will be in ~/.local/share/xorg/ and the xorg log you posted shows that you have *not* set "nvidia_drm.modeset=1"

Underplayer97 · 2025-01-22 22:50:12

startx logs of non-root users will be in ~/.local/share/xorg/

Did not realize you wanted that one, woops. Well here it is: https://0x0.st/8Xib.txt

the xorg log you posted shows that you have *not* set "nvidia_drm.modeset=1"

I removed it after it did nothing, but for now I will leave it on to see if it does anything then.

seth · 2025-01-23 09:04:13

Looking around for the I found https://bbs.archlinux.org/viewtopic.php … 9#p2160479 …

pacman -Qikk llvm-libs xorg-server

Underplayer97 · 2025-01-23 13:03:16

This is what it returns:

[under@PC ~]$ sudo pacman -Qikk llvm-libs xorg-server
Name            : llvm-libs
Version         : 19.1.7-1
Description     : LLVM runtime libraries
Architecture    : x86_64
URL             : https://llvm.org/
Licenses        : Apache-2.0 WITH LLVM-exception
Groups          : None
Provides        : None
Depends On      : gcc-libs  zlib  zstd  libffi  libedit  libxml2
Optional Deps   : None
Required By     : clang  llvm  mesa  rust
Optional For    : None
Conflicts With  : None
Replaces        : None
Installed Size  : 134.51 MiB
Packager        : Evangelos Foutras <foutrelis@archlinux.org>
Build Date      : Sat 18 Jan 2025 07:19:11 AM EST
Install Date    : Tue 21 Jan 2025 08:30:36 AM EST
Install Reason  : Installed as a dependency for another package
Install Script  : No
Validated By    : Signature

llvm-libs: 16 total files, 0 altered files
Name            : xorg-server
Version         : 21.1.15-1
Description     : Xorg X server
Architecture    : x86_64
URL             : https://xorg.freedesktop.org
Licenses        : LicenseRef-Adobe-Display-PostScript  BSD-3-Clause
                  LicenseRef-DEC-3-Clause  HPND
                  LicenseRef-HPND-sell-MIT-disclaimer-xserver
                  HPND-sell-variant  ICU  ISC  MIT  MIT-open-group  NTP
                  SGI-B-2.0  SMLNJ  X11  X11-distribute-modifications-variant
Groups          : xorg
Provides        : X-ABI-VIDEODRV_VERSION=25.2  X-ABI-XINPUT_VERSION=24.4
                  X-ABI-EXTENSION_VERSION=10.0  x-server
Depends On      : libepoxy  libxfont2  pixman  xorg-server-common  libunwind
                  dbus  libgl  xf86-input-libinput  nettle  libxdmcp  sh  glibc
                  libxau  systemd-libs  libtirpc  libpciaccess  libdrm
                  libxshmfence  libxcvt
Optional Deps   : None
Required By     : sddm
Optional For    : None
Conflicts With  : nvidia-utils<=331.20  glamor-egl  xf86-video-modesetting
Replaces        : glamor-egl  xf86-video-modesetting
Installed Size  : 3.64 MiB
Packager        : Andreas Radke <andyrtr@archlinux.org>
Build Date      : Tue 17 Dec 2024 02:10:22 PM EST
Install Date    : Tue 31 Dec 2024 10:12:48 PM EST
Install Reason  : Explicitly installed
Install Script  : Yes
Validated By    : Signature

xorg-server: 49 total files, 0 altered files

Arch Linux

#1 2025-01-21 15:50:27

[SOLVED] Black Screen With Cursor At Startup

#2 2025-01-21 15:58:16

Re: [SOLVED] Black Screen With Cursor At Startup

#3 2025-01-21 16:10:24

Re: [SOLVED] Black Screen With Cursor At Startup

#4 2025-01-21 16:35:54

Re: [SOLVED] Black Screen With Cursor At Startup

#5 2025-01-21 16:42:55

Re: [SOLVED] Black Screen With Cursor At Startup

#6 2025-01-21 16:51:54

Re: [SOLVED] Black Screen With Cursor At Startup

#7 2025-01-21 16:56:10

Re: [SOLVED] Black Screen With Cursor At Startup

#8 2025-01-21 17:05:32

Re: [SOLVED] Black Screen With Cursor At Startup

#9 2025-01-21 17:26:41

Re: [SOLVED] Black Screen With Cursor At Startup

#10 2025-01-21 17:54:35

Re: [SOLVED] Black Screen With Cursor At Startup

#11 2025-01-21 21:35:55

Re: [SOLVED] Black Screen With Cursor At Startup

#12 2025-01-22 13:16:10

Re: [SOLVED] Black Screen With Cursor At Startup

#13 2025-01-22 15:58:26

Re: [SOLVED] Black Screen With Cursor At Startup

#14 2025-01-22 19:07:50

Re: [SOLVED] Black Screen With Cursor At Startup

#15 2025-01-22 20:04:09

Re: [SOLVED] Black Screen With Cursor At Startup

#16 2025-01-22 20:21:53

Re: [SOLVED] Black Screen With Cursor At Startup

#17 2025-01-22 21:09:01

Re: [SOLVED] Black Screen With Cursor At Startup

#18 2025-01-22 21:15:18

Re: [SOLVED] Black Screen With Cursor At Startup

#19 2025-01-22 21:39:36

Re: [SOLVED] Black Screen With Cursor At Startup

#20 2025-01-22 21:59:12

Re: [SOLVED] Black Screen With Cursor At Startup

#21 2025-01-22 22:14:19

Re: [SOLVED] Black Screen With Cursor At Startup

#22 2025-01-22 22:20:05

Re: [SOLVED] Black Screen With Cursor At Startup

#23 2025-01-22 22:50:12

Re: [SOLVED] Black Screen With Cursor At Startup

#24 2025-01-23 09:04:13

Re: [SOLVED] Black Screen With Cursor At Startup

#25 2025-01-23 13:03:16

Re: [SOLVED] Black Screen With Cursor At Startup

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