Hello, I am a new user to Linux, and I am reporting a critical and frustrating issue with the KWin window manager on my Nobara system. I was using the system without any issues for about two weeks, for gaming, music, and general use. The problem first appeared when I needed to increase the font size on a website. The crash occurs consistently when I change the display scaling. The desktop becomes unusable, and I am forced to access a TTY. Steps to reproduce: On a clean installation of Nobara with the KDE Plasma desktop, go to Display Settings. First attempt: I changed the display scaling to 250%. The desktop crashed immediately, even before the timer for reverting the settings expired. Subsequent attempts: I tried changing the scaling to 125% and 150%. The desktop remained functional, but it crashed after a reboot. Additional Observations and Attempts to Fix: The crash occurs with all the available kernels in the boot menu (kernel 14, 15, 16, and the rescue kernel). A crash log message appears, but attempts to send the report fail. After the crash, the screen goes black, and only the mouse cursor is visible. I can still open and use the web browser by clicking on links in the error manager's window. The suspend screen can be accessed with Ctrl + Alt + Del. I have tried editing the ~/.config/kdeglobals file to force the use of the OpenGL renderer, but the crash still reoccurs. I have searched for a solution on the official Nobara website, a Facebook group ("Linux Italia"), and the official Discord and Reddit support channels without success. My situation: I am using a translator and the Gemini AI assistant to write this post, so I apologize in advance for my poor English. I have a working Windows partition, which allows me to keep the Nobara partition in this error state for testing purposes. I am willing to provide any logs or run any commands to help diagnose the issue. System Information: Operating System: Nobara Linux Desktop Environment: KDE Plasma Windowing System: X11 (the problem also occurs with Wayland) GPU: NVIDIA GTX 1060 6GB Driver: Proprietary NVIDIA drivers (automatically installed by Nobara)
Thank you for the bug report! However Plasma 5.18.0 no longer receives updates or maintenance from KDE; active versions are 6.4 or newer. Please upgrade to an active version as soon as your distribution makes it available to you. Plasma is a fast-moving project, and bugs in one version are often fixed in the next one. If you need help with Plasma 5.18.0, please contact your distribution, who bears the responsibility of providing help for older releases that are no longer receiving updates from KDE. If you can reproduce the issue after upgrading to an active version, feel free to re-open this bug report.
Hello, Thank you for your response. I would like to clarify some information. My KDE Plasma version is 6.4.3, which is a recent and actively maintained version. The crash report seems to have incorrectly identified my Plasma version. My system information is as follows: Operating System: Nobara Linux KDE Plasma Version: 6.4.3 Kernel: 6.15.7-200.fc42.x86_64 GPU: NVIDIA GTX 1060 6GB Drivers: Proprietary NVIDIA drivers (automatically installed by Nobara) The issue persists on this version. I am available to provide any further logs or to test any potential fixes. Thank you.
As the message at the top of the summary says, if something crashed, we need a backtrace of it so we can figure out what's going on. Can you please attach a backtrace of the crash? You might be able to copy the backtrace details from the crash reporter window and then paste them into this report. If that doesn't work, you can get the backtrace using the coredumpctl command-line program, as detailed in https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl . Thanks.
Starting debugger gdb --init-eval-command=maint set dwarf max-cache-age 0 --init-eval-command=set auto-solib-add off --nw --nx --batch --command=/tmp/drkonqi.KQYMep --command=/tmp/drkonqi.mQsZEt --core=/tmp/drkonqi-core.NdieIy/core /usr/bin/kwin_wayland This GDB supports auto-downloading debuginfo from the following URLs: <https://debuginfod.fedoraproject.org/> Enable debuginfod for this session? (y or [n]) [answered N; input not from terminal] Debuginfod has been disabled. To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit. warning: BFD: warning: /tmp/drkonqi-core.NdieIy/core has a segment extending past end of file warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:wayland-cursor (deleted) during file-backed mapping note processing warning: Can't open file /memfd:JITCode:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:wayland-shm (deleted) during file-backed mapping note processing warning: Can't open file /memfd:kwayland-shared (deleted) during file-backed mapping note processing warning: Can't open file /memfd:xwayland-shared (deleted) during file-backed mapping note processing warning: Can't open file /memfd:JSVMStack:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing [New LWP 7300] [New LWP 7325] [New LWP 8231] [New LWP 7321] [New LWP 8230] [New LWP 7310] [New LWP 7352] warning: failed to parse execution context from corefile: Cannot access memory at address 0x7fff4cab5fe0 Failed to read a valid object file image from memory. Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayl'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007fb9c6c8209c in ?? () [Current thread is 1 (LWP 7300)] eu-unstrip: No modules recognized in core file Cannot QML trace cores :( Traceback (most recent call last): File "/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py", line 812, in print_preamble print_preamble_internal() ~~~~~~~~~~~~~~~~~~~~~~~^^ File "/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py", line 803, in print_preamble_internal print_sentry_payload(thread) ~~~~~~~~~~~~~~~~~~~~^^^^^^^^ File "/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py", line 727, in print_sentry_payload payload = SentryEvent().make(program, thread) File "/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py", line 520, in make stacktrace = SentryTrace(crash_thread, True).to_dict() File "/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py", line 367, in to_dict SentryTrace.load_solib(self.thread, cramped_memory) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py", line 332, in load_solib raise UnexpectedMappingException(f"No solib and no image found for frame #{i} on thread {thread}! You could try with debug symbols downloading enabled.") UnexpectedMappingException: No solib and no image found for frame #0 on thread <gdb.InferiorThread id=1.1 target-id="LWP 7300">! You could try with debug symbols downloading enabled. No solib and no image found for frame #0 on thread <gdb.InferiorThread id=1.1 target-id="LWP 7300">! You could try with debug symbols downloading enabled. Sentry is attempting to send 2 pending events Waiting up to 30 seconds Press Ctrl-C to quit Debugging ended with exit code '1' and exit status 'NormalExit'
Unfortunately, that backtrace doesn't contain useful information. I see that the process which generated the coredump was kwin_wayland. Let's see if we can get a better backtrace of it. Can you try the following: Get the latest backtrace you have for kwin_wayland, from 'coredumpctl --reverse". Get the number from the second column (PID) for it. Then run this, using that number: coredumpctl gdb [paste the number] When you see the prompt "(gdb)", type in "bt" and press Return. If it says "--Type <RET> for more, q to quit, c to continue without paging--" press c Once it finishes, copy and paste the output into this report. Thanks!
Dear KDE team, I hope this message finds you well. I am encountering a recurring segmentation fault (SIGSEGV) with the kwin_wayland process on my system running Nobara 42. I’m a beginner with debugging, so I apologize if the following information is not as detailed as it could be. I would appreciate any guidance you can provide. Here are the relevant details: System Information: OS: Nobara 42 (based on Fedora) KWin version: 6.4.4-2.fc42 (debug symbols loaded) Kernel: (add kernel version with uname -r) Error Signal: SIGSEGV (Segmentation Fault) Debugging Attempt: I’ve attempted to debug the core dump generated by the crash using GDB. Below are the results: Backtrace (Core dump generated by /usr/bin/kwin_wayland): Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007fe81788209c in ?? () [Current thread is 1 (LWP 6519)] warning: failed to parse execution context from corefile: Cannot access memory at address 0x7ffce1ed8fe0 Failed to read a valid object file image from memory. The core dump shows a segmentation fault in the kwin_wayland process. There are warnings related to the inability to open several deleted memory files, such as: warning: Can't open file /memfd:kwin-dmabuf-feedback-table (deleted) during file-backed mapping note processing warning: Can't open file /memfd:wayland-shm (deleted) during file-backed mapping note processing ... warning: failed to parse execution context from corefile: Cannot access memory at address 0x7ffce1ed8fe0 Additional Information: I have tried loading debug symbols (kwin-debuginfo) for more detailed analysis, but there are still issues accessing memory in the core dump. A similar crash happens with systemsettings when trying to access kcm_kscreen: Core was generated by `/usr/bin/systemsettings kcm_kscreen`. The same type of warning and memory access issues are present. I also attempted to gather more information via drkonqi using the following commands, but it wasn’t able to parse the context: Starting debugger gdb --init-eval-command=maint set dwarf max-cache-age 0 --init-eval-command=set auto-solib-add off --nw --nx --batch --command=/tmp/drkonqi.obpaim --command=/tmp/drkonqi.iNVJer --core=/tmp/drkonqi-core.gnhkdH/core /usr/bin/systemsettings ... No solib and no image found for frame #0 on thread. Apologies and Further Information: As a beginner, I’m still learning how to provide effective debug information. I hope this data is useful, but please let me know if anything else is required. I’d be more than happy to try again with more guidance. Thank you for your time and help in resolving this issue. I really appreciate the work you do! Best regards,
Thanks for the additional troubleshooting. What we really need is a copy and paste of the actual debug output after running `bt` in the gdb console. That detailed backtrace is what we need to be able to investigate. Thanks.
▒▓ 🎩 ▓▒░ ◦•···································································•◦ ░▒▓ 38ms ▓▒░ ··• coredumpctl --reverse Wed 2025-08-27 08:19:19 CEST 8207 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:19:15 CEST 7702 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:19:10 CEST 6776 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:40 CEST 5871 1000 1001 SIGSEGV present /usr/libexec/drkonqi 20.5K Wed 2025-08-27 08:18:40 CEST 3163 1000 1001 SIGSEGV present /usr/libexec/drkonqi 25.5K Wed 2025-08-27 08:18:40 CEST 5698 1000 1001 SIGSEGV present /usr/libexec/drkonqi 20.2K Wed 2025-08-27 08:18:40 CEST 5524 1000 1001 SIGSEGV present /usr/libexec/drkonqi 20.7K Wed 2025-08-27 08:18:40 CEST 2299 1000 1001 SIGSEGV present /usr/libexec/drkonqi 20.4K Wed 2025-08-27 08:18:39 CEST 4934 1000 1001 SIGSEGV present /usr/libexec/ksmserver-logout-greeter 18.6K Wed 2025-08-27 08:18:39 CEST 6029 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:37 CEST 5865 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:35 CEST 5682 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:33 CEST 5498 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:31 CEST 5316 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:29 CEST 5149 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:27 CEST 4979 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:18:26 CEST 3445 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:14:16 CEST 3108 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:14:12 CEST 2271 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:14:07 CEST 1600 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:03:42 CEST 2888 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:03:38 CEST 2202 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Wed 2025-08-27 08:03:33 CEST 1601 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 23:23:46 CEST 13950 1000 1001 SIGABRT present /usr/libexec/xdg-desktop-portal-kde 10.1K Tue 2025-08-26 23:23:43 CEST 13917 1000 1001 SIGABRT present /usr/libexec/org_kde_powerdevil 10.4K Tue 2025-08-26 23:23:43 CEST 13846 1000 1001 SIGABRT present /usr/libexec/org_kde_powerdevil 10.5K Tue 2025-08-26 23:23:43 CEST 13862 1000 1001 SIGABRT present /usr/bin/gmenudbusmenuproxy 5K Tue 2025-08-26 23:23:42 CEST 13808 1000 1001 SIGABRT present /usr/bin/kaccess 5.9K Tue 2025-08-26 23:23:42 CEST 13809 1000 1001 SIGABRT present /usr/bin/xembedsniproxy 5.2K Tue 2025-08-26 23:23:42 CEST 13788 1000 1001 SIGABRT present /usr/bin/gmenudbusmenuproxy 5K Tue 2025-08-26 23:23:42 CEST 13662 1000 1001 SIGABRT present /usr/libexec/org_kde_powerdevil 10.5K Tue 2025-08-26 23:23:42 CEST 13695 1000 1001 SIGABRT present /usr/bin/kaccess 6K Tue 2025-08-26 23:23:42 CEST 13659 1000 1001 SIGABRT present /usr/bin/gmenudbusmenuproxy 5K Tue 2025-08-26 23:23:41 CEST 13700 1000 1001 SIGABRT present /usr/bin/kded6 5K Tue 2025-08-26 23:23:41 CEST 13550 1000 1001 SIGABRT present /usr/bin/xembedsniproxy 5.2K Tue 2025-08-26 23:23:41 CEST 13532 1000 1001 SIGABRT present /usr/bin/kded6 5.1K Tue 2025-08-26 23:23:41 CEST 13474 1000 1001 SIGABRT present /usr/bin/kaccess 6K Tue 2025-08-26 23:23:41 CEST 13458 1000 1001 SIGABRT present /usr/libexec/org_kde_powerdevil 10.5K Tue 2025-08-26 23:23:41 CEST 13440 1000 1001 SIGABRT present /usr/bin/gmenudbusmenuproxy 5K Tue 2025-08-26 23:23:40 CEST 13424 1000 1001 SIGABRT present /usr/libexec/xdg-desktop-portal-kde 10.1K Tue 2025-08-26 23:23:40 CEST 13389 1000 1001 SIGABRT present /usr/bin/kded6 5.1K Tue 2025-08-26 23:23:40 CEST 13371 1000 1001 SIGABRT present /usr/bin/xembedsniproxy 5.2K Tue 2025-08-26 23:23:39 CEST 13327 1000 1001 SIGABRT present /usr/bin/kaccess 5.9K Tue 2025-08-26 23:23:39 CEST 13150 1000 1001 SIGABRT present /usr/libexec/org_kde_powerdevil 10.8K Tue 2025-08-26 23:23:39 CEST 13196 1000 1001 SIGABRT present /usr/bin/gmenudbusmenuproxy 5K Tue 2025-08-26 23:23:39 CEST 13289 1000 1001 SIGABRT present /usr/bin/kded6 5.1K Tue 2025-08-26 23:23:39 CEST 13222 1000 1001 SIGABRT present /usr/libexec/xdg-desktop-portal-kde 10K Tue 2025-08-26 23:23:38 CEST 13186 1000 1001 SIGABRT present /usr/bin/xembedsniproxy 5.2K Tue 2025-08-26 23:23:38 CEST 13170 1000 1001 SIGABRT present /usr/bin/kaccess 5.8K Tue 2025-08-26 23:23:38 CEST 13128 1000 1001 SIGABRT present /usr/libexec/drkonqi 8.1K Tue 2025-08-26 23:23:38 CEST 13149 1000 1001 SIGABRT present /usr/bin/kded6 4.5K Tue 2025-08-26 23:23:37 CEST 12891 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 23:23:35 CEST 12702 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 23:23:33 CEST 12480 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 23:23:30 CEST 12253 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 23:23:28 CEST 12070 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 23:23:25 CEST 9023 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 23:23:16 CEST 9334 1000 1001 SIGSEGV present /opt/brave.com/brave/brave 13K Tue 2025-08-26 22:52:12 CEST 8387 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 22:51:52 CEST 7944 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 22:51:47 CEST 6998 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 22:51:42 CEST 6604 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 22:51:39 CEST 6519 1000 1001 SIGSEGV present /usr/bin/systemsettings 25.8K Tue 2025-08-26 22:51:37 CEST 1599 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - Tue 2025-08-26 22:36:13 CEST 3217 1000 1001 SIGSEGV present /opt/brave.com/brave/brave 14.7K ~ ░▒▓ 🎩 ▓▒░ ◦•··················································································•◦ ░▒▓ 52s524ms ▓▒░ ··• coredump gdb 8207 bash: coredump: comando non trovato... c ░▒▓ 🎩 ▓▒░ ◦•····················································································•◦ ░▒▓ 2s97ms ▓▒░ ··• sudo coredumpctl gdb 8207 [sudo] password di taormineitor93: PID: 8207 (kwin_wayland) UID: 1000 (taormineitor93) GID: 1001 (taormineitor93) Signal: 11 (SEGV) Timestamp: Wed 2025-08-27 08:19:19 CEST (4min 36s ago) Command Line: /usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :0 --xwayland-xauthority /run/user/1000/xauth_suSehJ --xwayland Executable: /usr/bin/kwin_wayland Control Group: /user.slice/user-1000.slice/user@1000.service/session.slice/plasma-kwin_wayland.service Unit: user@1000.service User Unit: plasma-kwin_wayland.service Slice: user-1000.slice Owner UID: 1000 (taormineitor93) Boot ID: 3771ac64bccc45669479a16f563c0e7b Machine ID: 1e8a9598a4db4a3f9092674dd6c38ec1 Hostname: nobara-pc Storage: /var/lib/systemd/coredump/core.kwin_wayland.1000.3771ac64bccc45669479a16f563c0e7b.8207.1756275559000000.zst (present) Size on Disk: 23.1K Message: Process 8207 (kwin_wayland) of user 1000 dumped core. Stack trace of thread 8207: #0 0x00007f205c28209c n/a (n/a + 0x0) ELF object binary architecture: AMD x86-64 GNU gdb (Fedora Linux) 16.3-1.fc42 Copyright (C) 2024 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/bin/kwin_wayland... Reading symbols from /usr/lib/debug/usr/bin/kwin_wayland-6.4.4-2.fc42.x86_64.debug... warning: BFD: warning: /var/tmp/coredump-w6I9eF has a segment extending past end of file warning: Can't open file /memfd:wayland-cursor (deleted) during file-backed mapping note processing warning: Can't open file /memfd:JITCode:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:kwayland-shared (deleted) during file-backed mapping note processing warning: Can't open file /memfd:JSVMStack:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing [New LWP 8207] [New LWP 8256] [New LWP 8386] [New LWP 8387] [New LWP 8283] [New LWP 8279] [New LWP 8253] [New LWP 8243] warning: failed to parse execution context from corefile: Cannot access memory at address 0x7ffd57028fe0 Failed to read a valid object file image from memory. Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayl'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f205c28209c in ?? () [Current thread is 1 (LWP 8207)] (gdb) bt #0 0x00007f205c28209c in ?? () Backtrace stopped: Cannot access memory at address 0x7ffd57023cf0 (gdb) quit ░▒▓ 🎩 ▓▒░ ◦•··················································································•◦ ░▒▓ 16s366ms ▓▒░ ··• ^[[200~journalctl -xe | grep kwin bash: journalctl: comando non trovato... ░▒▓ 🎩 ▓▒░ ◦•················································································································•◦ ░▒▓ 310ms ▓▒░ ··• journalctl -xe | grep kwin ago 27 08:25:03 nobara-pc kwin_wayland[8734]: kwin_core: XCB error: 3 (BadWindow), sequence: 2894, resource id: 8388662, major code: 129 (SHAPE), minor code: 6 (Input) ago 27 08:25:24 nobara-pc kwin_wayland[8734]: kwin_core: XCB error: 3 (BadWindow), sequence: 3450, resource id: 8388664, major code: 129 (SHAPE), minor code: 6 (Input) ░▒▓ 🎩 ▓▒░ ◦•·················································································································•◦ ░▒▓ 47ms ▓▒░ ··• valgrind --log-file=kwin_wayland.log /usr/bin/kwin_wayland bash: valgrind: comando non trovato... Installare il pacchetto «valgrind» per fornire il comando «valgrind»? [N/y] y * In attesa nella coda... * Caricamento elenco dei pacchetti.... I seguenti pacchetti devono essere installati: valgrind-1:3.25.1-1.fc42.x86_64 Dynamic analysis tools to detect memory or thread bugs and profile valgrind-docs-1:3.25.1-1.fc42.x86_64 Documentation for valgrind tools, scripts and gdb integration valgrind-gdb-1:3.25.1-1.fc42.x86_64 Tools for integrating valgrind and gdb valgrind-scripts-1:3.25.1-1.fc42.x86_64 Scripts for post-processing valgrind tool output Procedere con le modifiche? [N/y] y * In attesa nella coda... * Attesa dell'autenticazione... * In attesa nella coda... * Scaricamento dei pacchetti... * Richiesta dei dati... * Verifica delle modifiche... * Installazione pacchetti... ==10597== ==10597== Warning: Can't execute setuid/setgid/setcap executable: /usr/bin/kwin_wayland ==10597== Possible workaround: remove --trace-children=yes, if in effect ==10597== valgrind: /usr/bin/kwin_wayland: Permission denied ░▒▓ 🎩 ▓▒░ ◦•··················································································•◦ ░▒▓ 15s346ms ▓▒░ ··• valgrind --log-file=kwin_wayland.log /usr/bin/kwin_wayland ==10669== ==10669== Warning: Can't execute setuid/setgid/setcap executable: /usr/bin/kwin_wayland ==10669== Possible workaround: remove --trace-children=yes, if in effect ==10669== valgrind: /usr/bin/kwin_wayland: Permission denied ░▒▓ 🎩 ▓▒░ ◦•·······················································································•◦ ░▒▓ 5ms ▓▒░ ··• sudo valgrind --log-file=kwin_wayland.log /usr/bin/kwin_wayland [sudo] password di taormineitor93: ==10738== ==10738== Warning: Can't execute setuid/setgid/setcap executable: /usr/bin/kwin_wayland ==10738== Possible workaround: remove --trace-children=yes, if in effect ==10738== valgrind: /usr/bin/kwin_wayland: Permission denied ░▒▓ 🎩 ▓▒░ ◦•···················································································•◦ ░▒▓ 2s544ms ▓▒░ ··• sudo valgrind --trace-children=no --log-file=kwin_wayland.log /usr/bin/kwin_wayland ==10959== ==10959== Warning: Can't execute setuid/setgid/setcap executable: /usr/bin/kwin_wayland ==10959== Possible workaround: remove --trace-children=yes, if in effect ==10959== valgrind: /usr/bin/kwin_wayland: Permission denied ░▒▓ 🎩 ▓▒░ ◦•················································································································•◦ ░▒▓ 511ms ▓▒░ ··•
It sounds like you're missing debug symbols. Please follow whatever instructions Nobara provides to get them installed, then use the instructions at https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl to get a new backtrace of the crash that does include debug symbols.
I installed all the required kwin packages, valgrid and everything requested in the first guide.. I got help from both gemini and chatgpt at the same time and I installed everything I could install, and I can't install anything more than that.. I tried other kde distros in the meantime I tried to enlarge the fonts and the scale and I see that the error only occurs with nobara.
(In reply to taormineitor93 from comment #10) > I installed all the required kwin packages, valgrid and everything requested > in the first guide.. I got help from both gemini and chatgpt at the same > time and I installed everything I could install, and I can't install > anything more than that.. I tried other kde distros in the meantime I tried > to enlarge the fonts and the scale and I see that the error only occurs with > nobara. A word of caution about ChatGPT, Gemini and other AI tools. They are known to provide incorrect information sometimes. It looks like the reason the backtrace doesn't have anything is that it was run on a crash that no longer had a crash dump file. It was run on process ID 8207 ··• sudo coredumpctl gdb 8207 However that has no coredump file. You can see this in the coredumpctl --list output ▒▓ 🎩 ▓▒░ ◦•···································································•◦ ░▒▓ 38ms ▓▒░ ··• coredumpctl --reverse Wed 2025-08-27 08:19:19 CEST 8207 1000 1001 SIGSEGV inaccessible /usr/bin/kwin_wayland - You can see there's a dash at the end of the row. That says there is no coredump file. If the coredump file exists, there will be a size at the end of the row, like you can see here: Wed 2025-08-27 08:18:40 CEST 5871 1000 1001 SIGSEGV present /usr/libexec/drkonqi 20.5K Unfortunately, all the crashes shown in the coredumpctl output have no coredump file. Without that, you won't be able to get a good backtrace, and unfortunately we can't investigate without one. Since the crashes aren't happening with other distros, the problem may be in the Nobara setup somewhere. You might try asking the Nobara folks for help. They might also be able to help you get coredump files to properly generate.
I wanted to add that you might be able to get a backtrace on the existing coredump files listed there if you instead run things with sudo. For example sudo coredumpctl gdb [paste the number]
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME. For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging. Thank you for helping us make KDE software even better for everyone!
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.