Qt-interest Archive, August 2007
QFileDialog generates Xlib: unexpected async reply (sequence 0x19208)!
Message 1 in thread
Hi All,
I am using Ubuntu 7.04 with Qt 4.3. I am not using the libs and headers downloaded using apt-get, but am using a custom compile of Qt 4.3.0. I have an application which compiles and works fine on Windows and on Linux (well for the most part(. On Ubuntu Linux, when I branch into a part of the code that uses QFileDialog, the application hangs and I get a message like this
Xlib: unexpected async reply (sequence 0x19208)!
And there is more. If I run my Qt application the soon after I boot into Ubuntu and log into my account then the Xlib error is shown when QFileDialog is used for the second time. After that, I can see the Xlib error pretty much every time I use QFileDialog.
I have used (QFileDialog::DontUseNativeDialog|QFileDialog::DontUseSheet) options, even though they may not make sense on Linux.
How can I fix this problem?
Best Regards,
Prashanth N Udupa
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Message 2 in thread
On Wednesday 01 August 2007 15:32:25 Prashanth Udupa wrote:
> Hi All,
>
> I am using Ubuntu 7.04 with Qt 4.3. I am not using the libs and headers
> downloaded using apt-get, but am using a custom compile of Qt 4.3.0. I have
> an application which compiles and works fine on Windows and on Linux (well
> for the most part(. On Ubuntu Linux, when I branch into a part of the code
> that uses QFileDialog, the application hangs and I get a message like this
>
> Xlib: unexpected async reply (sequence 0x19208)!
>
> And there is more. If I run my Qt application the soon after I boot into
> Ubuntu and log into my account then the Xlib error is shown when
> QFileDialog is used for the second time. After that, I can see the Xlib
> error pretty much every time I use QFileDialog.
>
> I have used (QFileDialog::DontUseNativeDialog|QFileDialog::DontUseSheet)
> options, even though they may not make sense on Linux.
>
> How can I fix this problem?
>
> Best Regards,
> Prashanth N Udupa
Hmm, I guess try to simplilfy the problem, do you see it in 4.2? If you run
examples/itemviews/dirview do you see the problem? Does the starting
directory make a difference? If you make a 3 line application does it still
occur? etc
-Benjamin Meyer
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Message 3 in thread
Hi,
> Hmm, I guess try to simplilfy the problem, do you see it in 4.2? If you run
> examples/itemviews/dirview do you see the problem? Does the starting
> directory make a difference? If you make a 3 line application does it still
> occur? etc
No it does not occur in a 3 line application. QFileDialog works fine there.
Can you give me any hints as to where I can look for mistakes in my application? I am not using threads. I am using VTK and its QVTKWidget class, but that is again linked with the same Qt 4.3 library that my application uses.
Best Regards,
Prashanth N Udupa
____________________________________________________________________________________
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Message 4 in thread
On Wednesday 01 August 2007 9:29:58 am Prashanth Udupa wrote:
> Hi,
>
> > Hmm, I guess try to simplilfy the problem, do you see it in 4.2? If you
> > run examples/itemviews/dirview do you see the problem? Does the starting
> > directory make a difference? If you make a 3 line application does it
> > still occur? etc
>
> No it does not occur in a 3 line application. QFileDialog works fine there.
>
> Can you give me any hints as to where I can look for mistakes in my
> application? I am not using threads. I am using VTK and its QVTKWidget
> class, but that is again linked with the same Qt 4.3 library that my
> application uses.
>
Tips for debugging Xlib errors can be found here:
http://lists.trolltech.com/qt-interest/2007-06/thread00849-0.html
Clint
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