Re: X protocol errors

[Mike Miller]

On Tue, Mar 11, 2014 at 15:10:06 -0400, John W. Eaton wrote:
> I'm not familiar with Xvnc and I'm still unable to duplicate this
> error.  Would you be able to run Octave with gdb and get a stack
> trace at the point of the error, or find out exactly what pixmap is
> missing?

Well, it's not very clear to me, but here's an example stack trace when
I see the error under Xvnc when every menu bar menu or context menu is
first opened. I could try to compare the state of the QMenu::popup calls
from each of the enviroments to see what is different. I suppose it
could also be related to running a different window manager under Xvnc,
I didn't think of that until now. I'll keep looking.


#0  0x00007f45603c0f80 in XGetErrorText () from 
/usr/lib/x86_64-linux-gnu/libX11.so.6
#1  0x00007f4562f380e7 in qt_x_errhandler (dpy=<optimized out>, 
err=0x7fffcdfbd970)
    at kernel/qapplication_x11.cpp:712
#2  0x00007f45603e1cdb in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#3  0x00007f45603ded57 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#4  0x00007f45603dee05 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007f45603df745 in _XEventsQueued () from 
/usr/lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007f45603e2268 in _XData32 () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f45603bd714 in XChangeProperty () from 
/usr/lib/x86_64-linux-gnu/libX11.so.6
#8  0x00007f4562f64982 in QWidgetPrivate::setWindowIcon_sys (address@hidden, 
    address@hidden) at kernel/qwidget_x11.cpp:1548
#9  0x00007f4562f18bc5 in QWidget::create (address@hidden, address@hidden, 
    address@hidden, 
    address@hidden) at kernel/qwidget.cpp:1543
#10 0x00007f4562f2101a in QWidget::setVisible (this=0x101c310, 
visible=<optimized out>)
    at kernel/qwidget.cpp:7713
#11 0x00007f45632fb1b0 in show (this=0x101c310)
    at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#12 QMenu::popup (this=0x101c310, p=..., address@hidden)
    at widgets/qmenu.cpp:2050
#13 0x00007f4563304865 in QMenuBarPrivate::popupAction (address@hidden, 
    address@hidden, address@hidden)
    at widgets/qmenubar.cpp:384
#14 0x00007f4563305ce7 in QMenuBarPrivate::setCurrentAction (this=0xff0d90, 
    action=0x1047630, popup=<optimized out>, activateFirst=<optimized out>)
    at widgets/qmenubar.cpp:421
#15 0x00007f4562f21b3b in QWidget::event (address@hidden, 
    address@hidden) at kernel/qwidget.cpp:8372
#16 0x00007f4563306e0b in QMenuBar::event (this=0xff06e0, e=0x7fffcdfbe3f0)
    at widgets/qmenubar.cpp:1607
#17 0x00007f4562ed26cc in QApplicationPrivate::notify_helper (address@hidden, 
    address@hidden, address@hidden)
    at kernel/qapplication.cpp:4567
#18 0x00007f4562ed8e7d in QApplication::notify (this=<optimized out>, 
receiver=0xff06e0, 
    e=0x7fffcdfbe3f0) at kernel/qapplication.cpp:4110
#19 0x00007f45629a23cd in QCoreApplication::notifyInternal 
(this=0x7fffcdfbebe0, 
    address@hidden, address@hidden)
    at kernel/qcoreapplication.cpp:953

-- 
mike