SUMMARY I'm getting a =Too many open files= error. I believe it has caused a system freeze that required a hard reboot. I see it more often when running =tail -f= or even just =dolphin .= in the terminal. STEPS TO REPRODUCE 1. Use computer for a while 2. dolphin . 3. See: kf.solid.backends.fstab: Failed to acquire watch file descriptor Too many open files Also, output of =journalctl -b -1= after a hard crash included the same message. SOFTWARE/OS VERSIONS Windows: n/a macOS: n/a (available in the Info Center app, or by running `kinfo` in a terminal window) Operating System: Debian GNU/Linux 13 KDE Plasma Version: 6.3.6 KDE Frameworks Version: 6.13.0 Qt Version: 6.8.2 Kernel Version: 6.12.38+deb13-amd64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 7840U w/ Radeon 780M Graphics Memory: 128 GiB of RAM (123.6 GiB usable) Graphics Processor: AMD Radeon 780M $ ulimit -a real-time non-blocking time (microseconds, -R) unlimited core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 505450 max locked memory (kbytes, -l) 8192 max memory size (kbytes, -m) unlimited open files (-n) 32768 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 505450 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited ADDITIONAL INFORMATION $ sudo lsof > list $ cut -d" " -f1 list | sort | uniq -c | sort -n| tail 17746 ktailctl 20520 krunner 27511 Isolated 35661 slack 36807 chromium 48317 konsole 56572 kwin_wayl 58080 plasmashe 70303 ferdium 82472 firefox-e $ sudo lsof | awk '$5 == "REG" {print}' > list_REG $ cut -d" " -f1 list_REG | sort | uniq -c | sort -n| tail 596 xdg-deskt 808 xwaylandv 853 Isolated 871 emacs 985 plasmashe 1198 kwin_wayl 1205 slack 1877 chromium 2336 ferdium 3798 konsole Possibly related, but not yet clear if so: https://bugs.kde.org/show_bug.cgi?id=502357
The error message is pretty clear: you've got too many open files. You'll have to find a way to have fewer open files, or raise the open file limit on your system. This isn't a KDE problem; it's more of a whole system integration problem, which makes it a distro thing. I'd recommend contacting Debian about it.