After recent updates on login pressing enter at the point of intersection to desktop the greeter graphics corrupt badly.
In between those one or two seconds on top there're would display four kind of frames with diagonal lines or the greeter separates in two windows with inbox on the right vertical lines in the middle and plane colour on the left.
Since it is really difficult to describe any idea how to make a screenshot would be appreciated (no I don't have a digital camera nor a mobile phone).
Bug 933322 incl. some images of the issue.
Extracts from x-0-greeter.log:
[+0,07s] WARNING: unity-greeter.vala:95: Failed to load state from /var/lib/lightdm/.cache/unity-greeter/state: *Die Schlüsselwertedatei enthält die Zeile »)�«, welche kein zulässiges Schlüssel-Wert-Paar, keine Gruppe und kein Kommentar ist.
## *: key value file contents the line »)�« which isn't a valid key-value pair, no group, no comment.
[+0,10s] CRITICAL: g_error_free: assertion `error != NULL' failed
[+0,12s] WARNING: IndicatorObject class does not have an accessible description.
[+0,49s] DEBUG: settings-daemon.vala:97: Could not start gnome-settings-daemon over DBus: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: *Keine derartige Schnittstelle »org.gnome.SettingsDaemon« des Objekts im Pfad /org/gnome/SettingsDaemon
## *: No such interface ... of object in path ...
[+0,49s] CRITICAL: gtk_box_pack: assertion `gtk_widget_get_parent (child) == NULL' failed
[+0,49s] WARNING: gtk_menu_attach_to_widget(): menu already attached to IndicatorMenuItem
Error getting devices: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface »org.gnome.SettingsDaemon.Power« of object in path /org/gnome/SettingsDaemon/Power
[+0,57s] CRITICAL: ido_calendar_menu_item_set_date: assertion `IDO_IS_CALENDAR_MENU_ITEM(menuitem)' failed
[+14,81s] CRITICAL: gtk_widget_draw: assertion `!widget->priv->alloc_needed' failed
RV710 [Radeon HD 4350]
driver=radeon
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-greeter 0.2.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-16.25-generic 3.2.6
Uname: Linux 3.2.0-16-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Tue Feb 14 21:27:45 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120204)
ProcEnviron:
PATH=(custom, no user)
LANG=de_DE.UTF-8
SHELL=/bin/bash
SourcePackage: unity-greeter
UpgradeStatus: No upgrade log present (probably fresh install)
See the same on nvidia, can also show poor behavior if there are multiple users, the initial image after can be corrupted & show other users backgrounds