[kio-extras] [Bug 462059] New: Folder access times out on folders containin

[Christoph Thielecke]

https://bugs.kde.org/show_bug.cgi?id=462059

            Bug ID: 462059
           Summary: Folder access times out on folders containin
    Classification: Frameworks and Libraries
           Product: kio-extras
           Version: 21.12.3
          Platform: Ubuntu
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: MTP
          Assignee: unassigned-bugs at kde.org
          Reporter: crissi99 at gmx.de
                CC: elvis.angelaccio at kde.org
  Target Milestone: ---

SUMMARY
Listing mtp foldr with high amount of files leas to timeout


STEPS TO REPRODUCE
1. Connect android mobile in mtp mode with high amount of files in a folder
(e.g. DCIM folder, > 10000)
2. Access the folder with high amount of files


OBSERVED RESULT
1. On access there is a message like "Accessing folder"
2. After serveral minutes, dolphin reports that folder can't be opend

EXPECTED RESULT
1. On access there is a message like "Accessing folder"
2. After serveral minutes, dolphin lists the files

Additional information:
I think there all information fetched for the files at once.
Only the file names should be fetched first and this should be done
asynchronously.

The detailed information (like timestamps, size) could be fetched later in
background.

Android file transfer (https://github.com/whoozle/android-file-transfer-linux)
works fine but this needs to setup manually and requires to no access the mtp
device using kio-mtp.
It could be helpful to look how it access the device and fix the kio module.

Please make mtp really useable/stable for heavy usage.

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 22.04
KDE Plasma Version: 5.24.6
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
Kernel Version: 5.17.0-1021-oem (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7 CPU Q 840 @ 1.87GHz
Memory: 19.5 GiB of RAM
Graphics Processor: NV92

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