Atualizei um dos meus servidores para 12.04 (a partir de 10.04), e o Xorg não inicia mais, nem o lightdm ou o gdm.
Olhando em /var/log/lightdm/x-0.log:
X.Org X Server 1.11.3
Release Date: 2011-12-16
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.42-23-generic x86_64 Ubuntu
Current Operating System: Linux murph 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64
Kernel command line: root=/dev/md0 ro quiet splash
Build Date: 20 April 2012 05:12:02AM
xorg-server 2:1.11.4-0ubuntu10.1 (For technical support please see http://www.ubuntu.com/support)
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: Tue Apr 24 10:51:50 2012
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(EE) Failed to load module "xgi" (module does not exist, 0)
(EE) Failed to load module "vesa" (module does not exist, 0)
(EE) Failed to load module "fbdev" (module does not exist, 0)
(EE) Failed to load module "xgi" (module does not exist, 0)
(EE) Failed to load module "vesa" (module does not exist, 0)
(EE) Failed to load module "fbdev" (module does not exist, 0)
(EE) No drivers available.
Fatal server error:
no screens found
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.
ddxSigGiveUp: Closing log
Server terminated with error (1). Closing log file.
Portanto, parece querer usar um módulo xgi para a exibição, mas um não é encontrado. lspci revela que eu tenho uma placa on-board XGI:
root@murph:/etc/modprobe.d# lspci | grep VGA
01:03.0 VGA compatible controller: XGI Technology Inc. (eXtreme Graphics Innovation) Z7/Z9 (XG20 core)
Aqui está meu /var/log/Xorg.0.log:
[130507.662]
X.Org X Server 1.11.3
Release Date: 2011-12-16
[130507.662] X Protocol Version 11, Revision 0
[130507.662] Build Operating System: Linux 2.6.42-23-generic x86_64 Ubuntu
[130507.662] Current Operating System: Linux murph 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64
[130507.662] Kernel command line: root=/dev/md0 ro quiet splash
[130507.662] Build Date: 20 April 2012 05:12:02AM
[130507.662] xorg-server 2:1.11.4-0ubuntu10.1 (For technical support please see http://www.ubuntu.com/support)
[130507.662] Current version of pixman: 0.24.4
[130507.662] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[130507.662] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[130507.662] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Apr 24 10:51:50 2012
[130507.663] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[130507.697] (==) No Layout section. Using the first Screen section.
[130507.697] (==) No screen section available. Using defaults.
[130507.697] (**) |-->Screen "Default Screen Section" (0)
[130507.697] (**) | |-->Monitor "<default monitor>"
[130507.698] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[130507.698] (==) Automatically adding devices
[130507.698] (==) Automatically enabling devices
[130507.698] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[130507.698] Entry deleted from font path.
[130507.710] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/75dpi/:unscaled,
/usr/share/fonts/X11/Type1,
/usr/share/fonts/X11/100dpi,
/usr/share/fonts/X11/75dpi,
/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType,
built-ins
[130507.710] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[130507.710] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[130507.710] (II) Loader magic: 0x7f5268468b00
[130507.710] (II) Module ABI versions:
[130507.710] X.Org ANSI C Emulation: 0.4
[130507.711] X.Org Video Driver: 11.0
[130507.711] X.Org XInput driver : 16.0
[130507.711] X.Org Server Extension : 6.0
[130507.711] (--) PCI:*(0:1:3:0) 18ca:0020:1043:82b4 rev 0, Mem @ 0xf4000000/67108864, 0xfbdc0000/262144, I/O @ 0x0000ec00/128
[130507.711] (II) Open ACPI successful (/var/run/acpid.socket)
[130507.711] (II) LoadModule: "extmod"
[130507.788] (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
[130507.878] (II) Module extmod: vendor="X.Org Foundation"
[130507.878] compiled for 1.11.3, module version = 1.0.0
[130507.878] Module class: X.Org Server Extension
[130507.878] ABI class: X.Org Server Extension, version 6.0
[130507.878] (II) Loading extension MIT-SCREEN-SAVER
[130507.878] (II) Loading extension XFree86-VidModeExtension
[130507.878] (II) Loading extension XFree86-DGA
[130507.900] (II) Loading extension DPMS
[130507.900] (II) Loading extension XVideo
[130507.900] (II) Loading extension XVideo-MotionCompensation
[130507.900] (II) Loading extension X-Resource
[130507.900] (II) LoadModule: "dbe"
[130507.900] (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so
[130507.905] (II) Module dbe: vendor="X.Org Foundation"
[130507.906] compiled for 1.11.3, module version = 1.0.0
[130507.906] Module class: X.Org Server Extension
[130507.906] ABI class: X.Org Server Extension, version 6.0
[130507.906] (II) Loading extension DOUBLE-BUFFER
[130507.906] (II) LoadModule: "glx"
[130507.906] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[130508.032] (II) Module glx: vendor="X.Org Foundation"
[130508.032] compiled for 1.11.3, module version = 1.0.0
[130508.032] ABI class: X.Org Server Extension, version 6.0
[130508.032] (==) AIGLX enabled
[130508.032] (II) Loading extension GLX
[130508.115] (II) LoadModule: "record"
[130508.115] (II) Loading /usr/lib/xorg/modules/extensions/librecord.so
[130508.147] (II) Module record: vendor="X.Org Foundation"
[130508.147] compiled for 1.11.3, module version = 1.13.0
[130508.147] Module class: X.Org Server Extension
[130508.147] ABI class: X.Org Server Extension, version 6.0
[130508.147] (II) Loading extension RECORD
[130508.147] (II) LoadModule: "dri"
[130508.147] (II) Loading /usr/lib/xorg/modules/extensions/libdri.so
[130508.204] (II) Module dri: vendor="X.Org Foundation"
[130508.204] compiled for 1.11.3, module version = 1.0.0
[130508.204] ABI class: X.Org Server Extension, version 6.0
[130508.204] (II) Loading extension XFree86-DRI
[130508.204] (II) LoadModule: "dri2"
[130508.204] (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so
[130508.219] (II) Module dri2: vendor="X.Org Foundation"
[130508.219] compiled for 1.11.3, module version = 1.2.0
[130508.219] ABI class: X.Org Server Extension, version 6.0
[130508.219] (II) Loading extension DRI2
[130508.219] (==) Matched xgi as autoconfigured driver 0
[130508.219] (==) Matched vesa as autoconfigured driver 1
[130508.219] (==) Matched fbdev as autoconfigured driver 2
[130508.219] (==) Assigned the driver to the xf86ConfigLayout
[130508.219] (II) LoadModule: "xgi"
[130508.219] (WW) Warning, couldn't open module xgi
[130508.219] (II) UnloadModule: "xgi"
[130508.219] (II) Unloading xgi
[130508.219] (EE) Failed to load module "xgi" (module does not exist, 0)
[130508.219] (II) LoadModule: "vesa"
[130508.219] (WW) Warning, couldn't open module vesa
[130508.219] (II) UnloadModule: "vesa"
[130508.219] (II) Unloading vesa
[130508.219] (EE) Failed to load module "vesa" (module does not exist, 0)
[130508.219] (II) LoadModule: "fbdev"
[130508.220] (WW) Warning, couldn't open module fbdev
[130508.220] (II) UnloadModule: "fbdev"
[130508.220] (II) Unloading fbdev
[130508.220] (EE) Failed to load module "fbdev" (module does not exist, 0)
[130508.220] (==) Matched xgi as autoconfigured driver 0
[130508.220] (==) Matched vesa as autoconfigured driver 1
[130508.220] (==) Matched fbdev as autoconfigured driver 2
[130508.220] (==) Assigned the driver to the xf86ConfigLayout
[130508.220] (II) LoadModule: "xgi"
[130508.220] (WW) Warning, couldn't open module xgi
[130508.220] (II) UnloadModule: "xgi"
[130508.220] (II) Unloading xgi
[130508.220] (EE) Failed to load module "xgi" (module does not exist, 0)
[130508.220] (II) LoadModule: "vesa"
[130508.220] (WW) Warning, couldn't open module vesa
[130508.220] (II) UnloadModule: "vesa"
[130508.220] (II) Unloading vesa
[130508.220] (EE) Failed to load module "vesa" (module does not exist, 0)
[130508.220] (II) LoadModule: "fbdev"
[130508.220] (WW) Warning, couldn't open module fbdev
[130508.220] (II) UnloadModule: "fbdev"
[130508.220] (II) Unloading fbdev
[130508.220] (EE) Failed to load module "fbdev" (module does not exist, 0)
[130508.220] (EE) No drivers available.
[130508.220]
Fatal server error:
[130508.220] no screens found
[130508.220]
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[130508.220] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[130508.220]
É sobre a extensão das minhas habilidades de diagnóstico Xorg - estou confortável em torno de uma linha de comando, mas eu não tive que mexer com o Xorg desde os dias sombrios do pré-Ubuntu. ou seja, não por muitos anos.
Alguém pode sugerir o que eu faço em seguida?
Obrigado!
Verifique se você tem o pacote xserver-xorg-video-sis instalado:
sudo apt-get install xserver-xorg-video-sis
Verifique também se está referenciado corretamente em /etc/X11/xorg.conf. Eu acho que mudou os nomes de xgi para sis em 12.04. Por exemplo, em /etc/X11/xorg.conf tem:
Section "Device"
Identifier "XGI - Xabre Graphics Inc Volari Z7"
Driver "sis"
BusID "PCI:5:7:0"
EndSection
Mais detalhes no meu blog: link