In kdedebugsettings I enabled kiocore and dolphind debuginfos since MTP does not work properly. In journalctl I can read some related messages like kdeinit5[20672]: kf5.kio.core: UDSEntry for '.' not found, creating a default one. Please fix the "kio_kamera" > kwrite[18203]: kf5.kio.core: mimeType() not emitted when sending first data!; job URL = QUrl("camera:/Nikon%252> kdeinit5[20672]: kf5.kio.core: finished() called after error()! Please fix the "kio_kamera" KIO slave
kf5.kio.core.dirlister: QUrl("file:///tmp/gwenview.fOPVXf.part") -> QUrl("file:///tmp/gwenview.fOPVXf") kf5.kio.core.dirlister: Item not found: QUrl("file:///tmp/gwenview.fOPVXf.part") kf5.kio.core.dirlister: QUrl("file:///tmp/gwenview.ahwoCw.part") -> QUrl("file:///tmp/gwenview.ahwoCw") kf5.kio.core.dirlister: Item not found: QUrl("file:///tmp/gwenview.ahwoCw.part")