** Changed in: qtubuntu (Ubuntu)
Importance: Undecided => Critical
** Changed in: qtubuntu (Ubuntu)
Assignee: (unassigned) => Stephen M. Webb (bregma)
** No longer affects: qtubuntu
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https://bugs.launchpad.net/bugs/1295309
Title:
qtubuntu-desktop fails using Qt 5.2 on Mir
Status in qtubuntu package in Ubuntu:
Fix Released
Status in unity8-desktop-session package in Ubuntu:
Fix Released
Bug description:
Qt5.2 introduces a new feature in which it assumes that only OpenGL|ES
is supported if the QPA support is not limited to only OpenGL surface
formats. This causes a failure to compile shaders on the desktop when
the Mir QPA is used, because the Mir QPA supports both OpenGL and
OpenGL|ES.
The result of this combination of features is that the Unity 8 desktop
preview session fails to render anything. That's a critical blocker
for the 14.04 LTS release.
Since the qtubuntu-desktop package is already limited to supporting
only OpenGL on the desktop, this feature of Qt 5.2 can be worked
around by having the Mir QPA(s) force only the OpenGL surface format
on the desktop.
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