Bug 71421

Summary: Qt5 apps don't work with Xephyr
Product: xorg Reporter: Martin Klapetek <martin.klapetek>
Component: Server/DDX/XephyrAssignee: Xorg Project Team <xorg-team>
Status: RESOLVED NOTOURBUG QA Contact: Xorg Project Team <xorg-team>
Severity: major    
Priority: medium CC: me, nslqqq
Version: 7.7 (2012.06)   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description Martin Klapetek 2013-11-09 09:23:53 UTC
Xorg-server/Xephyr version: 1.13.4
Distro: Kubuntu 13.04

When trying to run any Qt5 (or apparently GTK3) apps inside Xephyr, they don't work (as in nothing is shown). GTK2 or Qt4 works just fine as well as GLX apps (glxgears for example). Also tested on standalone X server with no DM running - Qt5 works perfectly fine there, just inside Xephyr they don't.

I've also heard that once any wm is run inside Xephyr, all apps work then, but I didn't test that and can't verify atm.

Might also be a Qt5 bug, but given there are reports[1] that GTK3 doesn't work either, I report a bug here.

I'm happy to provide any testing/info you need.

[1] https://bugs.archlinux.org/task/37705
Comment 1 Nikita Mikhailov 2013-11-09 09:28:23 UTC
I can confirm this, my specs:
Archlinux
Xorg 1.14.4
Qt 5.1.1
Gtk3 3.10.2
Comment 2 Martin Klapetek 2013-11-09 09:30:03 UTC
Oh I should mention my Qt is self-compiled 5.2~git30102013
Comment 3 Andrea Scarpino 2015-04-24 07:53:54 UTC
Fixed when using qt5-base 5.3.2

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