Pop-up menu of Qt5 QML running with VirtualGL becomes 1x1 pixels

[totaam]

Issue migrated from trac ticket # 881

component: server | priority: major | resolution: worksforme

2015-06-02 13:31:43: duanbw created the issue

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I don't know if this is a bug of Xpra or I made the wrong configuration but programs written in Qt5 QML failed to popup the menu under Xpra.
We have a program written with QML and can't be run directly using Xpra because QML uses OpenGL rendering, so I used VirtualGL to handle the OpenGL things, and Xpra as a proxy server to run this program remotely. But when I right click somewhere in the application window where it is supposed to popup a context menu, only a tiny 1x1 pixel below the mouse pointer is shown, but the menu is still functional, I can click the menu region and trigger the action, just like I have an invisible menu. This phenomenon occurs occasionally, not every time.
I wrote another quite simple QML application (in attachments as menu.tar.gz) to test, when I click the Click button, a menu is supposed to popup. But this little program needs Qt5 to compile and run. If needed, I could upload the 64bit binary, which is about 25MB with its Qt5 dependencies.
I started the server with the command
PYTHONPATH=~/xpra-versions/xpra-0.15.0/install/lib64/python ~/xpra-versions/xpra-0.15.0/install/bin/xpra start :100 --start-child=$HOME/run_menu.sh --exit-with-children --debug=all
And on the client I attach with the command
xpra attach ssh/[email protected]/100
I am using Xpra version 0.15.0 downloaded from the snapshots, revision 9556 I think. I build xpra from source using the following command:
python setup.py install --home=install
VirtualGL I use is version 2.4. Qt 5.1.1.
And I also tested with 0.14.24(revision 9443) and it works fine though occasionally the menu becomes 1x1 too, but not so often to be unusable.

[totaam]

2015-06-02 13:34:47: duanbw uploaded file 0.14.24-with-menu.png (196.0 KiB)

0.14.24 server, menu pops up normally on client.

[totaam]

2015-06-02 13:37:18: duanbw uploaded file 0.15.0-without-menu.png (199.0 KiB)

0.15.0 server, menu become one pixel

[totaam]

2015-06-02 13:41:36: duanbw uploaded file logs.tar.gz (329.4 KiB)

Logs of server and information got using xpra info

[totaam]

2015-06-02 13:44:13: duanbw uploaded file menu.tar.gz (1.1 KiB)

The little QML program I wrote for testing.

[totaam]

2015-06-02 13:47:30: duanbw uploaded file run_menu.sh (0.2 KiB)

The shell script to run my test program.

[totaam]

2015-06-02 13:54:13: duanbw commented

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The server machine:

uname -a
Linux localhost.localdomain 3.6.10-4.fc18.x86_64 #1 SMP Tue Dec 11 18:01:27 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

The client machine:

uname -a
Linux developer.centos 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

[totaam]

2015-06-02 15:02:43: antoine changed status from new to assigned

[totaam]

2015-06-02 15:02:43: antoine commented

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This sounds like a duplicate of #846.
Thanks for the test application, it will make it much easier to test and fix this issue.

[totaam]

2015-06-03 03:58:28: duanbw commented

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I don't know if you could access this website but I am really sorry that I don't have access to any file sharing sites I know outside the country. This is the 64bit binary of the test application and its dependencies, about 25MB in size. Hopefully it could make things easier.
[http://pan.baidu.com/s/1i3DzVKx]
(This site doesn't seem to support English, but the download button should be easy to recognize by its icon)

[totaam]

2015-11-20 06:46:14: antoine changed status from assigned to new

[totaam]

2015-11-20 06:46:14: antoine changed owner from antoine to duanbw

[totaam]

2015-11-20 06:46:14: antoine commented

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@duanbw: how do I build the example app? There is no makefile..

[totaam]

2015-11-20 10:48:30: antoine commented

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Assuming that this is the same problem as #846, this should now be fixed, see #846#comment:9

@duanbw: does the fix work for you?

[totaam]

2015-12-05 11:27:49: antoine changed status from new to closed

[totaam]

2015-12-05 11:27:49: antoine set resolution to worksforme

[totaam]

2015-12-05 11:27:49: antoine commented

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Not heard back, closing. Feel free to re-open if this is still a problem.