Xcb crash on KDE Plasma (tumbleweed)

Hello,

Whenever I log in to KDE Plasma, I get the following error message (see below). Firefox windows are displayed with a black border, and when I try to launch programs that use OpenGL features, I get the following error message: QXcbIntegration: The platform’s OpenGL context cannot be created; neither GLX nor EGL is enabled.

How can I fix this problem?

What I use:

OS: openSUSE Tumbleweed x86_64
Kernel: Linux 7.0.12-1-default
DE: KDE Plasma 6.7.0
GPU: NVIDIA RTX 4000 Ada Generation

Plasma error:


Hint: You are currently not seeing messages from other users and the system.
      Users in the 'systemd-journal' group can see all messages. Pass -q to
      turn off this notice.
           PID: 2944 (drkonqi-coredum)
           UID: 1000 (mer)
           GID: 1000 (mer)
        Signal: 6 (ABRT)
     Timestamp: Fri 2026-06-26 08:20:03 CEST (17s ago)
  Command Line: /usr/libexec/drkonqi-coredump-launcher -session 10cfe7726e000178245422400001293170005_1782454267_791150
    Executable: /usr/libexec/drkonqi-coredump-launcher
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-\x2fusr\x2flibexec\x2fdrkonqi\x2dcoredump\x2dlauncher@09f4003548e549fcad1c0daa268e887e.service
          Unit: user@1000.service
     User Unit: app-\x2fusr\x2flibexec\x2fdrkonqi\x2dcoredump\x2dlauncher@09f4003548e549fcad1c0daa268e887e.service
         Slice: user-1000.slice
     Owner UID: 1000 (mer)
       Boot ID: dd9c2fb611224abd8f7a6a2c29aaa842
    Machine ID: eab501025163474fb30b31b3f8618e3b
      Hostname: fornix
       Storage: /var/lib/systemd/coredump/core.drkonqi-coredum.1000.dd9c2fb611224abd8f7a6a2c29aaa842.2944.1782454803000000.zst (present)
  Size on Disk: 1.3M
       Message: Process 2944 (drkonqi-coredum) of user 1000 dumped core.
                
                Stack trace of thread 2944:
                #0  0x00007f9111a9d87c __pthread_kill_implementation (libc.so.6 + 0x9d87c)
                #1  0x00007f9111a424c6 raise (libc.so.6 + 0x424c6)
                #2  0x00007f9111a293a0 abort (libc.so.6 + 0x293a0)
                #3  0x00007f91122fd17f n/a (libQt6Core.so.6 + 0xfd17f)
                #4  0x00007f91122fecc3 _ZNK14QMessageLogger5fatalEPKcz (libQt6Core.so.6 + 0xfecc3)
                #5  0x000055dbde574e96 n/a (drkonqi-coredump-launcher + 0x9e96)
                #6  0x00007f9111a2b33e __libc_start_call_main (libc.so.6 + 0x2b33e)
                #7  0x00007f9111a2b46b __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x2b46b)
                #8  0x000055dbde575195 n/a (drkonqi-coredump-launcher + 0xa195)
                
                Stack trace of thread 2990:
                #0  0x00007f9111aa4252 __syscall_cancel_arch (libc.so.6 + 0xa4252)
                #1  0x00007f9111a97dd8 __internal_syscall_cancel (libc.so.6 + 0x97dd8)
                #2  0x00007f9111a97e31 __syscall_cancel (libc.so.6 + 0x97e31)
                #3  0x00007f9111b1192a __poll (libc.so.6 + 0x11192a)
                #4  0x00007f91109442a4 n/a (libxcb.so.1 + 0xf2a4)
                #5  0x00007f9110945d4c xcb_wait_for_event (libxcb.so.1 + 0x10d4c)
                #6  0x00007f910f12c068 n/a (libQt6XcbQpa.so.6 + 0x64068)
                #7  0x00007f9112590460 n/a (libQt6Core.so.6 + 0x390460)
                #8  0x00007f9111a9b8f0 start_thread (libc.so.6 + 0x9b8f0)
                #9  0x00007f9111b1fc2c __clone3 (libc.so.6 + 0x11fc2c)
                
                Stack trace of thread 2987:
                #0  0x00007f9111aa4252 __syscall_cancel_arch (libc.so.6 + 0xa4252)
                #1  0x00007f9111a97dd8 __internal_syscall_cancel (libc.so.6 + 0x97dd8)
                #2  0x00007f9111a97e31 __syscall_cancel (libc.so.6 + 0x97e31)
                #3  0x00007f9111b11eb2 ppoll (libc.so.6 + 0x111eb2)
                #4  0x00007f911152b56f n/a (libglib-2.0.so.0 + 0x6456f)
                #5  0x00007f911152bce0 g_main_context_iteration (libglib-2.0.so.0 + 0x64ce0)
                #6  0x00007f91126ac1a8 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x4ac1a8)
                #7  0x00007f91123e9a33 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x1e9a33)
                #8  0x00007f91124f5855 _ZN7QThread4execEv (libQt6Core.so.6 + 0x2f5855)
                #9  0x00007f9112173cde n/a (libQt6DBus.so.6 + 0x44cde)
                #10 0x00007f9112590460 n/a (libQt6Core.so.6 + 0x390460)
                #11 0x00007f9111a9b8f0 start_thread (libc.so.6 + 0x9b8f0)
                #12 0x00007f9111b1fc2c __clone3 (libc.so.6 + 0x11fc2c)
                ELF object binary architecture: AMD x86-64