I have done additional tests and got some debug logs.
I have added
[general]
debug=1
to the end of /etc/xdg/sni-qt.conf to turn on debug logging of sni-qt.
Then I have killed all hp-systray processes (there are usually three)
and run
hp-systray --debug > log 2>&1
The icon appeared but clicking on it gives an empty menu (small dark
gray rectangle).
The message
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:127:
RuntimeWarning: PyOS_InputHook is not available for interactive use of
PyGTK
in the log file makes the impression that GTK is used by hp-systray
which would break the automatic use-as-indicator process of sni-qt. So I
have searchd for GTK usage in HPLIP and found it only in
/usr/share/hplip/base/utils.py
So I have commented out the appropriate lines (all in the function
no_qt_message_gtk()) and added a "return" to the beginning of the
function to keep the code in a working state.
Killing all hp-systray processes again andrunning above command line
again leads to the exactly same result. Still no menu at the icon and
still the GTK message in the log.
Then I went step by step through the code to find what causes the
message and it is in
/usr/share/hplip/ui4/systemtray.py
The lines:
try:
import pynotify
except ImportError:
have_pynotify = False
cause it. I commented them out and added
have_pynotify = False
after them. This most probably deactivates the notifier. After that and
killing and restarting hp-systray the GTK message in the log
disappeared, but the indicator icon is still without menu. So this GTK
use seems not to have any influence.
The log of this execution is attached to the next comment as log-nogtk.
** Attachment added: "log"
https://bugs.launchpad.net/ubuntu/+source/hplip/+bug/857929/+attachment/2465401/+files/log
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https://bugs.launchpad.net/bugs/857929
Title:
hp-systray icon does nothing
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