When I plugin my Garmin Edge 800 and mount its micro SD card with Dolphin, my system freezes for a few seconds. I.e. I can still move the mouse but the UI won't react to any input. Kernel: 4.17.17 Kubuntu 18.04.1 LTS Plasma 5.12.6
Is it Plasma that freezes or everything? Can you perhaps gdb plasmshell and see where it freezes when you plug in such a device?
Created attachment 115463 [details] gdb plasmashell backtrace
Created attachment 115464 [details] CPU load history during gdb plasmashell
Comment on attachment 115463 [details] gdb plasmashell backtrace I will redo it again with debug symbols installed. :-)
Created attachment 115469 [details] gdb plasmashell backtrace with dbgsyms
> Is it Plasma that freezes or everything? Dolphin and the Plasma panel become unresponsive, however it is still possible to switch to other still working apps like the FireFox or Konsole using Shift+Tab. > Can you perhaps gdb plasmshell and see where it freezes when you plug in such a device? I did that now, but it seems that the gdb backtrace is not very useful. However, I could now observe with htop that the main plasmashell and the dolphin process status become "D", i.e. "uninterruptible sleep" exactly during the whole freeze.
Mounting the SD card of the device in the Konsole results in a freezing plasmashell as well. That means it's not Dolphin specific. @Stefan Brüns, in case you are strongly interested in debugging that issue, I could lend you my device as I am located very closely to you. :)
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!