[dolphin] [Bug 427927] Dolphin: Double clicking on icon in Veracrypt windows does nothing

[Ian Proudler]

https://bugs.kde.org/show_bug.cgi?id=427927

--- Comment #2 from Ian Proudler <i.proudler at oxon.org> ---
I did the following:
1. Open Konsole
2. type `kate` and a space
3. Drag the file in question into the Konsole window
4. Hit the return key

Kate opened the file successfully. There were no error/warning messages.

I started over again but this time I started kate from a terminal before
starting veracrypt from another terminal. The file opened successfully. There
were no error/warning messages in either terminal.

I checked the systemd log. There was nothing in the log that had a suitable
timestamp that seemed appropriate.

I started over again but this time I started dolphin from a terminal before
starting veracrypt. Clicking on the volume in the VeraCrypt window launched a
new tab in the Dolphin window. Double clicking on an file icon successfully
open the file in kate. There were some messages in the terminal:

Skipped method "changeUrl" : Type not registered with QtDBus in parameter list:
QUrl
Skipped method "slotTerminalDirectoryChanged" : Type not registered with QtDBus
in parameter list: QUrl
Skipped method "openNewTabAfterCurrentTab" : Type not registered with QtDBus in
parameter list: QUrl
Skipped method "openNewTabAfterLastTab" : Type not registered with QtDBus in
parameter list: QUrl
Unsupported return type 65 QPixmap in method "grab"
Unsupported return type 65 QPixmap in method "grab"

I did a web search and found that one can look at standout and standerr for a
detached process via /proc. I then did the following:
1. Start VeraCrypt.
2. Select and mount encrypted file.
3. Double click on volume in VeraCrypt widow (Dolphin windows appears)
4. In a terminal, I located the pid of the dolphin instance (8223)
5. cd /proc/8223/fd
6. tail -f 2
7. In the Dolphin window double click on text file icon.

Kate started and opened the file.

I then quit the 'tail' process and double clicked on text file icon in the
Dolphin window. The bug appeared: a Kate icon appears next to Mouse cursor and
an entry for Kate appears in the task manger for a fraction of a second then
they both disappear.

I then started a new 'tail' process in the terminal and double clicked on text
file icon in the Dolphin window. Kate started and opened the file.

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