Instalou um novo Debian Wheezy para desfrutar do Gnome 3, mas ele começa no modo de fallback. Acho que é porque os drivers carregados não suportam a aceleração 3D.
Pacotes instalados que eu sei são relevantes:
-
xserver-xorg-video-ati
-
libgl1-mesa-dri
O Gnome 3 estava funcionando bem com o Ubuntu 12.04, e acredito que ele estava usando os drivers FOSS.
Curiosamente, não há /etc/X11/xorg.conf e, quando tento gerar com Xorg -configure , obtenho:
X.Org X Server 1.12.1
Release Date: 2012-04-13
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.2.0-2-amd64 x86_64 Debian
Current Operating System: Linux blackwhisper 3.2.0-2-amd64 #1 SMP Mon Apr 30 05:20:23 UTC 2012 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-3.2.0-2-amd64 root=UUID=e6f57a36-19aa-4dfc-9b61-32d5e08abcc6 ro quiet
Build Date: 07 May 2012 12:15:23AM
xorg-server 2:1.12.1-2 (Cyril Brulebois <[email protected]>)
Current version of pixman: 0.24.4
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat May 19 20:15:31 2012
List of video drivers:
mga
...MANYMORE
radeon
...MANYMORE
ati
...MANYMORE
vesa
(++) Using config file: "/root/xorg.conf.new"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(II) [KMS] No DRICreatePCIBusID symbol, no kernel modesetting.
Number of created screens does not match number of detected devices.
Configuration failed.
Server terminated with error (2). Closing log file.
ADIÇÃO
Eu encontrei agora na inicialização da mensagem:
[ 8.121829] [drm] Loading RS780 Microcode
[ 8.156063] r600_cp: Failed to load firmware "radeon/RS780_pfp.bin"
[ 8.156092] [drm:r600_startup] *ERROR* Failed to load firmware!