Dolphin crashing when accessing an MTP device with a large number of files

diminDDL · February 23, 2026, 2:21am

Whenever I try to use Dolphin (version 25.12.2) under KDE Neon with my android device (pixel 5) in file transfer mode (MTP). It works fine for a bit until I start browsing and it will randomly crash with the following output in the terminal:
ASSERT: “(!QFileInfo(m_tempName).isDir() && QFileInfo(m_tempName).isFile()) || QFileInfo(m_tempName).isSymLink()” in file /workspace/build/src/gui/filepreviewjob.cpp, line 69
KCrash: Application ‘dolphin’ crashing… crashRecursionCounter = 2
fish: Job 1, ‘dolphin’ terminated by signal SIGABRT (Abort)

I tried searching online but did not find anything similar. dmesg is clear. Normal USB drives and some other devices in MTP appear to work fine.

Additional system info:
Operating System: KDE neon User Edition
KDE Plasma Version: 6.6.0
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.2
Kernel Version: 6.17.0-14-generic (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 PRO 5850U with Radeon Graphics
Memory: 32 GiB of RAM (29.2 GiB usable)
Graphics Processor: AMD Radeon Graphics
Manufacturer: LENOVO
Product Name: 21A0004KPB
System Version: ThinkPad P14s Gen 2a

Any help or further debugging steps would be appreciated because I am at a loss here.

Thank you.

diminDDL · February 23, 2026, 2:37am

After playing around with it a bit more I found a workaround:
go into Dolphin Settings, Preview and disable previews completely (all file types, or the ones you will find on the device only)

After doing that it stopped crashing!

meven · February 23, 2026, 9:06am

Could you still open a bug report (or share here), the backtrace.txt file, generated by the command:

coredumpctl debug dolphin -A "-ex bt -ex quit" |& tee backtrace.txt