Linux 64bit + x11 = nothing

Evgeniy

Hi, if I try run any application that uses qt5,
I don't see any window. While application itself is running,
I see in debuger that event loops works, but no window at all.

For example I run "designer", and I see under debuger 4 threads,
"designer", "QXcbEventReader", "designer", "gdbus".
Events loops hang in poll system call, so all looks good, but I can not find
any window.

I tried install qt5 with help of my package manger (portage, Gentoo) = nothing.
I tried build from git, using instruction from site = nothing.
I tried online installer from site = nothing.

qt4 works fine, I have nvidia binary driver with opengl support,
opengl also works fine.

Any hints what is going wrong?

PS I used qt 5.1

Evgeniy

Ok, reply to myself. I bisect qt5,
and find out that that faulty commit is:
b5bdd31de Implement XEmbed protocol.

I comment such lines:
long data[] = { XEMBED_VERSION, XEMBED_MAPPED };
Q_XCB_CALL(xcb_change_property(xcb_connection(), XCB_PROP_MODE_REPLACE, m_window,
atom(QXcbAtom::_XEMBED_INFO),
atom(QXcbAtom::_XEMBED_INFO),
32, 2, (void *)data));
and all start working.

So my windows manager (icewm) and qt5 have diffrent thoughts about xembed protocol.

SGaist

Hi,

It might be useful to discuss this issue on the mailing list, or fill a bug report about it.

Evgeniy

Create bug report:

https://bugreports.qt-project.org/browse/QTBUG-32269

but it is possible to say that qt is not broken, the world is broken,
so not sure that this problem will be solved.

SGaist

Adding a complete code sample to your bug-report would be useful. That would avoid the future assignee (or any contributor wanting to dig into this bug) to first find how to reproduce the problem.

Evgeniy

What do you mean under complete code sample, can you explain?

Any applications have no window. designer, assistant, qt creator, any from examples subdirectories.

SGaist

Sorry, my bad, I've missed one point when I read the bug report