libGL error: failed to authenticate magic 7

[Huck-bernhard]

If you start unity8 in a Terminal Window. Do you get a empty Window with the Title "Qml Phone Shell"

~$ unity8
libGL error: failed to authenticate magic 7
libGL error: failed to load driver: vboxvideo
Need to use QMirServerApplication
file:///usr/share/unity8/Shell.qml:134:13: Type Dash unavailable
                 Dash {
                 ^
file:///usr/share/unity8/Dash/Dash.qml:72:5: Type DashContent unavailable
         DashContent {
         ^
file:///usr/share/unity8/Dash/DashContent.qml:172:9: Type PageHeader unavailable
             PageHeader {
             ^
file:///usr/share/unity8/Components/PageHeader.qml:76:9: Type AbstractButton unavailable
             AbstractButton {
             ^
file:///usr/lib/i386-linux-gnu/qt5/qml/Ubuntu/Components/AbstractButton.qml:18:1: plugin cannot be loaded for module "QtFeedback": The plugin '/usr/lib/i386-linux-gnu/qt5/qml/QtFeedback/libdeclarative_feedback.so' uses incompatible Qt library. (5.3.0) [release]
     import QtFeedback 5.0
     ^

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: unity8 7.89+14.10.20140619.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.15.0-6.11-generic 3.15.0
Uname: Linux 3.15.0-6-generic i686
ApportVersion: 2.14.3-0ubuntu2
Architecture: i386
Date: Fri Jun 20 13:05:10 2014
InstallationDate: Installed on 2014-06-13 (6 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha i386 (20140613)
SourcePackage: unity8
UpgradeStatus: No upgrade log present (probably fresh install)

[Michał Sawicz (saviq)]

file:///usr/lib/i386-linux-gnu/qt5/qml/Ubuntu/Components/AbstractButton.qml:18:1: plugin cannot be loaded for module "QtFeedback": The plugin '/usr/lib/i386-linux-gnu/qt5/qml/QtFeedback/libdeclarative_feedback.so' uses incompatible Qt library. (5.3.0) [release]

This is the actual error. You just got caught in an incomplete Qt 5.3 migration from proposed. Update, dist-upgrade and you'll be back on track.

Although
libGL error: failed to authenticate magic 7
libGL error: failed to load driver: vboxvideo
Sound like you're doing that in VBox, and the above suggests there's some issue with that.

And
Need to use QMirServerApplication

Means you need to install unity8-fake-env (bug #1330349).

[Huck-bernhard (huck-bernhard)]

Thank you, yes i am working wth VBox after

$ sudo apt-get update
$ sudo apt-get dist-upgrade
$ sudo apt-get unity8-fake-env

do i get now

$ unity8

libGL error: failed to authenticate magic 4
libGL error: failed to load driver: vboxvideo
unity::action::ActionManager::ActionManager(QObject*):
 Could not determine application identifier. HUD will not work properly.
 Provide your application identifier in $APP_ID environment variable.
Unable to register launcher name
file:///usr/share/unity8/Shell.qml:610:5: QML Binding: Binding loop detected for property "target"
file:///usr/share/unity8/Stages/PhoneStage.qml:51: TypeError: Cannot read property 'screenshot' of null
file:///usr/share/unity8/Dash/DashDepartments.qml:192:5: QML Connections: Cannot assign to non-existent property "onHasDepartmentsChanged"
file:///usr/lib/i386-linux-gnu/qt5/qml/Ubuntu/Components/Themes/Ambiance/TabBarStyle.qml:62: TypeError: Cannot read property 'selectedIndex' of null
file:///usr/lib/i386-linux-gnu/qt5/qml/Ubuntu/Components/MainView.qml:202:5: QML StyledItem: Binding loop detected for property "style"
file:///usr/share/unity8/Launcher/LauncherDelegate.qml:62:20: QML QQuickImage: Failed to get image from provider: image://theme/firefox
file:///usr/share/unity8/Launcher/LauncherDelegate.qml:62:20: QML QQuickImage: Failed to get image from provider: image://theme/firefox
file:///usr/share/unity8/Launcher/LauncherDelegate.qml:62:20: QML QQuickImage: Failed to get image from provider: image://theme/firefox
file:///usr/share/unity8/Dash/DashDepartments.qml:193:17: Unable to assign [undefined] to QObject*
ERROR! Caught unity::scopes::TimeoutException: Request timed out after 300 milliseconds

** (unity8:2600): WARNING **: Unable to register app: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Invalid application ID
file:///usr/lib/i386-linux-gnu/qt5/qml/Ubuntu/Components/Themes/Ambiance/TabBarStyle.qml:72: TypeError: Cannot read property 'selectedIndex' of null

[Michał Sawicz (saviq)]

And what do you see? Still an blank window?

[Michał Sawicz (saviq)]

Ok so it's actually working now (for a value of working where you run a shell in a window).

You're just missing the scopes, which you can start by `initctl start smart-scopes-proxy`.

You could also try running unity8 via upstart `initctl start unity8 ARGS=-mousetouch`, which would set the environment properly.

In any case, maybe you should just try the desktop session instead?

See http://www.olli-ries.com/doing-more-with-your-unity8-preview-session-in-ubuntu-14-04/