Bug 1294362
| Summary: | [abrt] xpra: connection.py:584:call_async:ValueError: Unable to guess signature from an empty list | ||||||||
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| Product: | [Fedora] Fedora | Reporter: | Karel Volný <kvolny> | ||||||
| Component: | xpra | Assignee: | Jonathan Underwood <jonathan.underwood> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | unspecified | Docs Contact: | |||||||
| Priority: | unspecified | ||||||||
| Version: | 23 | CC: | jonathan.underwood, kvolny, tchollingsworth | ||||||
| Target Milestone: | --- | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Unspecified | ||||||||
| URL: | https://retrace.fedoraproject.org/faf/reports/bthash/1093ace014ba535f0e38b7431802f74d6f89d095 | ||||||||
| Whiteboard: | abrt_hash:18f3142b76422a7d3667d0ad1b38a8bf0dd1ee0d; | ||||||||
| Fixed In Version: | xpra-0.16.3-1.fc24 xpra-0.16.3-1.fc23 | Doc Type: | Bug Fix | ||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2016-04-02 16:44:12 UTC | Type: | --- | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Embargoed: | |||||||||
| Attachments: |
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Created attachment 1109835 [details]
File: backtrace
Created attachment 1109836 [details]
File: environ
Haven't managed to reproduce this. Any idea what you were doing when it happened? (In reply to Jonathan Underwood from comment #3) > Any idea what you were doing when it happened? unfortunately not, I've found it while processing some older crashes (abrt sometimes doesn't show things immediately :-( ) but if the problem is with the notification ... sometimes, plasmashell freezes while displaying notifications, could that be that it puts dbus in some wrong state which then leads to a problem in xpra? (In reply to Karel Volný from comment #4) > (In reply to Jonathan Underwood from comment #3) > > Any idea what you were doing when it happened? > > unfortunately not, I've found it while processing some older crashes (abrt > sometimes doesn't show things immediately :-( ) > > but if the problem is with the notification ... sometimes, plasmashell > freezes while displaying notifications, could that be that it puts dbus in > some wrong state which then leads to a problem in xpra? Hm, could be. I know upstream has had a lot of problems keeping up with notifications across the different desktop environments it targets, and kde/plasma/system tray (absence) support is probably in the worst shape. I'll leave this open in the hope we can find a reliable reproducer to take upstream. Just so we have a clear picture - what's your dekstop environment exactly? (In reply to Jonathan Underwood from comment #6) > Just so we have a clear picture - what's your dekstop environment exactly? KDE by the time of the crash, I believe the relevant package version was: plasma-workspace-5.5.0-4.fc23.x86_64 (is this the one including the notifications handler, right?) xpra-0.16.3-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b8890ebde4 xpra-0.16.3-1.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-28d5c6ddaa xpra-0.16.3-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b8890ebde4 xpra-0.16.3-1.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-28d5c6ddaa xpra-0.16.3-1.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b8890ebde4 xpra-0.16.3-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report. xpra-0.16.3-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. |
Version-Release number of selected component: xpra-0.15.10-1.fc23 Additional info: reporter: libreport-2.6.3 cmdline: /usr/bin/python /usr/bin/xpra --tray=yes --dpi=100 --encoding=png/P --keyboard-sync=no attach ssh:kavol.cz:100 dso_list: dbus-python-1.2.0-12.fc23.x86_64 executable: /usr/bin/xpra kernel: 4.2.8-300.fc23.x86_64 runlevel: N 5 type: Python uid: 1000 Truncated backtrace: connection.py:584:call_async:ValueError: Unable to guess signature from an empty list Traceback (most recent call last): File "/usr/lib64/python2.7/site-packages/dbus/connection.py", line 607, in msg_reply_handler *message.get_args_list())) File "/usr/lib64/python2.7/site-packages/dbus/proxies.py", line 416, in _introspect_error_handler self._introspect_execute_queue() File "/usr/lib64/python2.7/site-packages/dbus/proxies.py", line 387, in _introspect_execute_queue proxy_method(*args, **keywords) File "/usr/lib64/python2.7/site-packages/dbus/proxies.py", line 137, in __call__ **keywords) File "/usr/lib64/python2.7/site-packages/dbus/connection.py", line 584, in call_async message.append(signature=signature, *args) ValueError: Unable to guess signature from an empty list Local variables in innermost frame: bus_name: dbus.UTF8String(':1.1522') byte_arrays: False self: <dbus._dbus.SessionBus (session) at 0x7f93bd991110> args: ('Xpra', 0, 'kmail', 'Upozorn\xc4\x9bn\xc3\xad na nov\xc3\xbd e-mail', 'Od: logwatch.cz\nP\xc5\x99edm\xc4\x9bt: Logwatch for kurva236.hajnet.cz (Linux)\nV: P\xc5\x99\xc3\xadchoz\xc3\xad', [], [], -1) require_main_loop: True object_path: '/org/freedesktop/Notifications' signature: None reply_handler: <bound method DBUS_Notifier.cbReply of <xpra.client.notifications.dbus_notifier.DBUS_Notifier object at 0x7f93bd9a5990>> error_handler: <bound method DBUS_Notifier.cbError of <xpra.client.notifications.dbus_notifier.DBUS_Notifier object at 0x7f93bd9a5990>> dbus_interface: 'org.freedesktop.Notifications' timeout: -1.0 kwargs: {} e: ValueError('Unable to guess signature from an empty list',) message: <dbus.lowlevel.MethodCallMessage path: /org/freedesktop/Notifications, iface: org.freedesktop.Notifications, member: Notify dest: :1.1522> get_args_opts: {'byte_arrays': False, 'utf8_strings': False} method: 'Notify'