[Risolto] Xorg ... troppo leggero non riconosce il monitor!

[giova]

Nelle ultime settimane ho assistito a un fenomeno strano che non mi era mai capitato: all'avvio, kubuntu non riesce a riconoscere la risoluzione dello schermo, per cui passo, a fasi alterne, da una 800x600 a una 1024x768 (che preferisco).  
Dopo aver guardato Xorg mi sono reso conto che è troppo leggero , tanto che non conserva quasi nessun dato relativo al monitor e alla scheda video.

Codice: Seleziona tutto

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"it"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
EndSection

Section "Device"
	Identifier	"Configured Video Device"
	Option		"UseFBDev"		"true"
EndSection

Section "Monitor"
	Identifier	"Configured Monitor"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Monitor		"Configured Monitor"
	Device		"Configured Video Device"
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
EndSection

Ho provato ad avviare

Codice: Seleziona tutto

sudo dpkg-reconfigure xserver-xorg

ma quando supera lo scoglio della tastiera si blocca: non riconosce la scheda e il monitor!
Anche la procedura di pagina

Codice: Seleziona tutto

https://help.ubuntu.com/community/FixVideoResolutionHowto

per la configurazione manuale del file Xorg, è difficile da seguire perché non sono riuscito a trovare i dati di default necessari.  Il mio monitor LUXX è introvabile in rete!

Cosa mi consigliate di fare?

[giova]

Dopo aver guardato Xorg mi sono reso conto che è troppo leggero , tanto che non conserva quasi nessun dato relativo al monitor e alla scheda video.

Dimenticato di dare i miei parametri:

Codice: Seleziona tutto

lspci | grep VGA
01:00.0 VGA compatible controller: S3 Inc. ProSavage KM133 (rev 03/[code])

Inserendo 
[code]sudo displayconfig-gtk

non trovo il monitor LUXX e, come generico non supera 800X600 !
[/code][/code]

[giova]

Provo a mettere il file Xorg suggerito da Guiodic :

http://forum.ubuntu-it.org/viewtopic.ph ... 8#p1381998

Codice: Seleziona tutto

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "InputDevice"
   Identifier   "Generic Keyboard"
   Driver      "kbd"
   Option      "XkbRules"   "xorg"
   Option      "XkbModel"   "pc105"
   Option      "XkbLayout"   "it"
EndSection

Section "InputDevice"
   Identifier   "Configured Mouse"
   Driver      "mouse"
   Option      "CorePointer"
EndSection

Section "Device"
   Identifier   "Configured Video Device"
   
EndSection

Section "Monitor"
   Identifier   "Configured Monitor"
   HorizSync    27-61
   VertRefresh  55-75
EndSection

Section "Screen"
   Identifier   "Default Screen"
   Monitor      "Configured Monitor"
   Device      "Configured Video Device"
   DefaultDepth 24
   SubSection "Display"
                Depth     24
                Modes     "1024x768"
   EndSubSection
EndSection

Section "ServerLayout"
   Identifier   "Default Layout"
   Screen      "Default Screen"
EndSection

[giova]

Fatto.  Non mi resta che riavviare ,,,!

[Nosf3r]

prova qui...

http://telperion.wordpress.com/2008/05/ ... a-800x600/

[giova]

Risolto.  Dopo aver riavviato

Codice: Seleziona tutto

ctr + Alt + backspace

mi ha fatto scegliere la risoluzione ed ho optato per la nuova 1024x768.

Ho riacceso tre volte e, per ilmomento funziona. (b2b)

[giova]

prova qui...

http://telperion.wordpress.com/2008/05/ ... a-800x600/

Grazie per il richiamo. 

E' proprio

Codice: Seleziona tutto

sudo displayconfig-gtk

che prima delle modifiche a Xorg non mi faceva modificare mentre, dopo la modifica con kedit allo stesso file, con il riavvio, mi ha chiesto di rettificare spontaneamente, all'avvio del sistema.

[giova]

Ho notato che nella nuova versione di Xorg manca il codice

Codice: Seleziona tutto

Option		"UseFBDev"		"true"

Cambia qualcosa?

[giova]

prova qui...

http://telperion.wordpress.com/2008/05/ ... a-800x600/

Grazie per il richiamo. 

Continuando ad avere qualche problema ho provato a ridurre la risoluzione ad 800x600. La mia scheda, infatti, è una vecchia S3 ProSavage KM 133 (rev 03). Vediamo che succede ...

Codice: Seleziona tutto

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" xorg.conf
# For example:
#   sudo dpkg-reconfigure -phigh xserver-xorg
Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"it"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
EndSection

Section "Device"
	Identifier	"Configured Video Device"
	Boardname	"vesa"
	Busid		"PCI:1:0:0"
	Driver		"vesa"
	Screen	0
EndSection

Section "Monitor"
	Identifier	"Configured Monitor"
	Vendorname	"Generic CRT Display"
	Modelname	"Monitor 800x600"
	Horizsync	31.5-35.1
	Vertrefresh	50-61
  modeline  "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
  modeline  "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
	Gamma	1.0
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"Configured Video Device"
	Monitor		"Configured Monitor"
	Defaultdepth	24
	SubSection "Display"
		Depth	24
		Virtual	800	600
		Modes		"640x480@60"	"800x600@56"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
  screen 0 "Default Screen" 0 0
EndSection
Section "Module"
	Load		"glx"
	Load		"GLcore"
	Load		"v4l"
EndSection
Section "ServerFlags"
EndSection

[giova]

Credo che non sia questo il problema. Il pc continua a resettare tutto per riavviarsi.

Pazienza.  Cercherò qualche altra strada ... ::)

[giova]

Credo che non sia questo il problema. Il pc continua a resettare tutto per riavviarsi.

Pazienza.  Cercherò qualche altra strada ... ::)

Inserisco la parte con gli errori del file Xorg.log.  Nel caso qualcuno abbia qualche idea da suggerirmi...!

Codice: Seleziona tutto

	information	

	information	VESA(0): Total Memory: 256 64KB banks (16384kB)

	information	VESA(0): Configured Monitor: Using hsync range of 31.50-61.00 kHz

	information	VESA(0): Configured Monitor: Using vrefresh range of 50.00-75.00 Hz

	information	VESA(0): Not using mode "800x600@72" (no mode of this name)

	information	VESA(0): Not using mode "800x600@75" (no mode of this name)

	information	VESA(0): Not using mode "800x600@56" (no mode of this name)

	information	VESA(0): Not using mode "800x600@60" (no mode of this name)

	information	VESA(0): Not using mode "640x480@75" (no mode of this name)

	information	VESA(0): Not using mode "832x624@75" (no mode of this name)

	information	VESA(0): Not using mode "640x480@72" (no mode of this name)

	information	VESA(0): Not using mode "1024x768@75" (no mode of this name)

	information	VESA(0): Not using mode "640x480@60" (no mode of this name)

	information	VESA(0): Not using mode "1024x768@70" (no mode of this name)

	information	VESA(0): Not using mode "1024x768@60" (no mode of this name)

	information	VESA(0): Not using mode "1280x960@60" (no mode of this name)

	information	VESA(0): Not using built-in mode "512x384" (hsync out of range)

	information	VESA(0): Not using built-in mode "400x300" (hsync out of range)

	information	VESA(0): Not using built-in mode "320x240" (hsync out of range)

	information	VESA(0): Not using built-in mode "320x200" (hsync out of range)

	from config file	VESA(0): Virtual size is 1280x960 (pitch 1280)

	from config file	VESA(0):  Built-in mode "1280x960"

	from config file	VESA(0):  Built-in mode "1152x864"

	from config file	VESA(0):  Built-in mode "1280x768"

	from config file	VESA(0):  Built-in mode "1024x768"

	from config file	VESA(0):  Built-in mode "800x600"

	from config file	VESA(0):  Built-in mode "720x576"

	from config file	VESA(0):  Built-in mode "848x480"

	from config file	VESA(0):  Built-in mode "720x480"

	from config file	VESA(0):  Built-in mode "640x480"

	from config file	VESA(0):  Built-in mode "640x400"

	default setting	VESA(0): DPI set to (96, 96)

	information	VESA(0): Attempting to use 60Hz refresh for mode "1280x960" (16a)

	information	VESA(0): Attempting to use 60Hz refresh for mode "1280x768" (17b)

	information	VESA(0): Attempting to use 75Hz refresh for mode "1024x768" (118)

	information	VESA(0): Attempting to use 72Hz refresh for mode "800x600" (115)

	information	VESA(0): Attempting to use 73Hz refresh for mode "640x480" (112)

	from config file	VESA(0): Using "Shadow Framebuffer"

	information	Loading sub module "shadow"

	information	LoadModule: "shadow"

	information	Loading /usr/lib/xorg/modules//libshadow.so

	information	Module shadow: vendor="X.Org Foundation"

	information		compiled for 1.4.0.90, module version = 1.1.0

	information		ABI class: X.Org ANSI C Emulation, version 0.3

	information	Loading sub module "fb"

	information	LoadModule: "fb"

	information	Loading /usr/lib/xorg/modules//libfb.so

	information	Module fb: vendor="X.Org Foundation"

	information		compiled for 1.4.0.90, module version = 1.0.0

	information		ABI class: X.Org ANSI C Emulation, version 0.3

	probed	Depth 24 pixmap format is 32 bpp

	information	do I need RAC?  No, I don't.

	information	resource ranges after preInit:

	information		[0] -1	0	0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)

	information		[1] -1	0	0x000f0000 - 0x000fffff (0x10000) MX[B]

	information		[2] -1	0	0x000c0000 - 0x000effff (0x30000) MX[B]

	information		[3] -1	0	0x00000000 - 0x0009ffff (0xa0000) MX[B]

	information		[4] -1	0	0xf8000000 - 0xf7ffffff (0x0) MX[B]O

	information		[5] -1	0	0xefff0000 - 0xefffffff (0x10000) MX[B](B)

	information		[6] -1	0	0xf0000000 - 0xf7ffffff (0x8000000) MX[B](B)

	information		[7] -1	0	0xef000000 - 0xef07ffff (0x80000) MX[B](B)

	information		[8] 0	0	0x000a0000 - 0x000affff (0x10000) MS[B]

	information		[9] 0	0	0x000b0000 - 0x000b7fff (0x8000) MS[B]

	information		[10] 0	0	0x000b8000 - 0x000bffff (0x8000) MS[B]

	information		[11] -1	0	0x0000ffff - 0x0000ffff (0x1) IX[B]

	information		[12] -1	0	0x00000000 - 0x000000ff (0x100) IX[B]

	information		[13] -1	0	0x0000a000 - 0x0000a03f (0x40) IX[B]

	information		[14] -1	0	0x0000a400 - 0x0000a41f (0x20) IX[B]

	information		[15] -1	0	0x0000b000 - 0x0000b003 (0x4) IX[B]

	information		[16] -1	0	0x0000b400 - 0x0000b403 (0x4) IX[B]

	information		[17] -1	0	0x0000b800 - 0x0000b8ff (0x100) IX[B]

	information		[18] -1	0	0x0000d000 - 0x0000d01f (0x20) IX[B]

	information		[19] -1	0	0x0000d400 - 0x0000d41f (0x20) IX[B]

	information		[20] -1	0	0x0000d800 - 0x0000d80f (0x10) IX[B]

	information		[21] 0	0	0x000003b0 - 0x000003bb (0xc) IS[B]

	information		[22] 0	0	0x000003c0 - 0x000003df (0x20) IS[B]

	information	Loading sub module "int10"

	information	LoadModule: "int10"

	information	Reloading /usr/lib/xorg/modules//libint10.so

	information	VESA(0): initializing int10

	information	VESA(0): Primary V_BIOS segment is: 0xc000

	information	VESA(0): VESA BIOS detected

	information	VESA(0): VESA VBE Version 3.0

	information	VESA(0): VESA VBE Total Mem: 16384 kB

	information	VESA(0): VESA VBE OEM: S3 Incorporated. Savage4

	information	VESA(0): VESA VBE OEM Software Rev: 2.0

	information	VESA(0): VESA VBE OEM Vendor: S3 Incorporated.

	information	VESA(0): VESA VBE OEM Product: Savage4

	information	VESA(0): VESA VBE OEM Product Rev: Rev B

	default setting	VESA(0): Write-combining range (0xf0000000,0x1000000)

	information	VESA(0): virtual address = 0xb6108000,

	information		physical address = 0xf0000000, size = 16777216

	default setting	VESA(0): Default visual is TrueColor

	default setting	VESA(0): Backing store disabled

	information	VESA(0): DPMS enabled

	default setting	RandR enabled

	information	Setting vga for screen 0.

	information	Initializing built-in extension MIT-SHM

	information	Initializing built-in extension XInputExtension

	information	Initializing built-in extension XTEST

	information	Initializing built-in extension XKEYBOARD

	information	Initializing built-in extension XC-APPGROUP

	information	Initializing built-in extension XAccessControlExtension

	information	Initializing built-in extension SECURITY

	information	Initializing built-in extension XINERAMA

	information	Initializing built-in extension XFIXES

	information	Initializing built-in extension XFree86-Bigfont

	information	Initializing built-in extension RENDER

	information	Initializing built-in extension RANDR

	information	Initializing built-in extension COMPOSITE

	information	Initializing built-in extension DAMAGE

	information	Initializing built-in extension XEVIE

	error	Failed to initialize GLX extension (Compatible NVIDIA X driver not found)

	warning	Configured Mouse: No Device specified, looking for one...

	information	Configured Mouse: Setting Device option to "/dev/input/mice"

	probed	Configured Mouse: Device: "/dev/input/mice"

	default setting	Configured Mouse: Protocol: "Auto"

	from config file	Option "CorePointer"

	from config file	Configured Mouse: always reports core events

	default setting	Configured Mouse: Emulate3Buttons, Emulate3Timeout: 50

	from config file	Configured Mouse: ZAxisMapping: buttons 4 and 5

	from config file	Configured Mouse: Buttons: 9

	from config file	Configured Mouse: Sensitivity: 1

	from config file	Option "CoreKeyboard"

	from config file	Generic Keyboard: always reports core events

	from config file	Option "Protocol" "standard"

	from config file	Generic Keyboard: Protocol: standard

	from config file	Option "AutoRepeat" "500 30"

	from config file	Option "XkbRules" "xorg"

	from config file	Generic Keyboard: XkbRules: "xorg"

	from config file	Option "XkbModel" "pc105"

	from config file	Generic Keyboard: XkbModel: "pc105"

	from config file	Option "XkbLayout" "it"

	from config file	Generic Keyboard: XkbLayout: "it"

	from config file	Option "CustomKeycodes" "off"

	from config file	Generic Keyboard: CustomKeycodes disabled

	information	evaluating device (Generic Keyboard)

	information	XINPUT: Adding extended input device "Generic Keyboard" (type: KEYBOARD)

	information	evaluating device (Configured Mouse)

	information	XINPUT: Adding extended input device "Configured Mouse" (type: MOUSE)

	probed	Configured Mouse: PnP-detected protocol: "ExplorerPS/2"

	information	Configured Mouse: ps2EnableDataReporting: succeeded

	information	[config/hal] couldn't initialise context: (null) ((null))

	information	Open ACPI successful (/var/run/acpid.socket)

	information	APM registered successfully

	information	Loading sub module "int10"

	information	LoadModule: "int10"

	information	Reloading /usr/lib/xorg/modules//libint10.so

	information	VESA(0): initializing int10

	information	VESA(0): Primary V_BIOS segment is: 0xc000

	information	VESA(0): VESA BIOS detected

	information	VESA(0): VESA VBE Version 3.0

	information	VESA(0): VESA VBE Total Mem: 16384 kB

	information	VESA(0): VESA VBE OEM: S3 Incorporated. Savage4

	information	VESA(0): VESA VBE OEM Software Rev: 2.0

	information	VESA(0): VESA VBE OEM Vendor: S3 Incorporated.

	information	VESA(0): VESA VBE OEM Product: Savage4

	information	VESA(0): VESA VBE OEM Product Rev: Rev B

	default setting	VESA(0): Write-combining range (0xf0000000,0x1000000)

	information	VESA(0): virtual address = 0xb60e8000,

	information		physical address = 0xf0000000, size = 16777216

	default setting	VESA(0): Default visual is TrueColor

	information	VESA(0): DPMS enabled

	default setting	RandR enabled

	error	Failed to initialize GLX extension (Compatible NVIDIA X driver not found)

	information	evaluating device (Generic Keyboard)

	information	evaluating device (Configured Mouse)

	information	Configured Mouse: ps2EnableDataReporting: succeeded

	information	Open ACPI successful (/var/run/acpid.socket)

	information	APM registered successfully

	information	Loading sub module "int10"

	information	LoadModule: "int10"

	information	Reloading /usr/lib/xorg/modules//libint10.so

	information	VESA(0): initializing int10

	information	VESA(0): Primary V_BIOS segment is: 0xc000

	information	VESA(0): VESA BIOS detected

	information	VESA(0): VESA VBE Version 3.0

	information	VESA(0): VESA VBE Total Mem: 16384 kB

	information	VESA(0): VESA VBE OEM: S3 Incorporated. Savage4

	information	VESA(0): VESA VBE OEM Software Rev: 2.0

	information	VESA(0): VESA VBE OEM Vendor: S3 Incorporated.

	information	VESA(0): VESA VBE OEM Product: Savage4

	information	VESA(0): VESA VBE OEM Product Rev: Rev B

	default setting	VESA(0): Write-combining range (0xf0000000,0x1000000)

	information	VESA(0): virtual address = 0xb5fd7000,

	information		physical address = 0xf0000000, size = 16777216

	default setting	VESA(0): Default visual is TrueColor

	information	VESA(0): DPMS enabled

	default setting	RandR enabled

	error	Failed to initialize GLX extension (Compatible NVIDIA X driver not found)

	information	evaluating device (Generic Keyboard)

	information	evaluating device (Configured Mouse)

	information	Configured Mouse: ps2EnableDataReporting: succeeded

[giova]

Ho provveduto a sostituire la vecchia scheda con una geforce 5500.  Non ha avuto alcun problema ad avviarsi e non aveva più nemmeno il problema dello spegnimento improvviso del sistema.  Non individuando il driver mi rallentava, però, non poco la macchina.

Dopo qualche piccolo intervento

- installazione di envyng-gtk;
- selezionamento: driver nvidia - rilevazione automatica dell'hardware;
- configurazione file xorg:

Codice: Seleziona tutto

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildd@vernadsky)  Thu Jun  5 09:26:53 UTC 2008

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder63)  Thu Jun  5 00:10:21 PDT 2008
# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" xorg.conf
# For example:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
    Identifier     "Default Layout"
    Screen      0  "Screen0" 0 0
    InputDevice    "Generic Keyboard" "CoreKeyboard"
    InputDevice    "Configured Mouse" "CorePointer"
EndSection

Section "Module"
    Load           "glx"
    Load           "v4l"
EndSection

Section "ServerFlags"
    Option         "Xinerama" "0"
EndSection

Section "InputDevice"
    Identifier     "Generic Keyboard"
    Driver         "kbd"
    Option         "XkbRules" "xorg"
    Option         "XkbModel" "pc105"
    Option         "XkbLayout" "it"
EndSection

Section "InputDevice"
    Identifier     "Configured Mouse"
    Driver         "mouse"
EndSection

Section "Monitor"
    Identifier     "Configured Monitor"
    VendorName     "Generic CRT Display"
    ModelName      "Monitor 1024x768"
    HorizSync       31.0 - 61.0
    VertRefresh     50.0 - 75.0
    Gamma           1
    ModeLine       "640x480@60" 25.0 640 656 752 800 480 490 492 525 -hsync -vsync
    ModeLine       "640x480@72" 31.0 640 664 704 832 480 489 491 520 -hsync -vsync
    ModeLine       "640x480@75" 31.0 640 656 720 840 480 481 484 500 -hsync -vsync
    ModeLine       "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
    ModeLine       "800x600@72" 50.0 800 856 976 1040 600 637 643 666 +hsync +vsync
    ModeLine       "800x600@75" 49.0 800 816 896 1056 600 601 604 625 +hsync +vsync
    ModeLine       "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
    ModeLine       "832x624@75" 57.0 832 864 928 1152 624 625 628 667 -hsync -vsync
    ModeLine       "1024x768@75" 78.0 1024 1040 1136 1312 768 769 772 800 +hsync +vsync
    ModeLine       "1024x768@70" 75.0 1024 1048 1184 1328 768 771 777 806 -hsync -vsync
    ModeLine       "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -hsync -vsync
    ModeLine       "1280x960@60" 102.0 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
EndSection

Section "Monitor"
    Identifier     "monitor1"
    Gamma           1
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Daewoo PnP Monitor"
    HorizSync       30.0 - 70.0
    VertRefresh     50.0 - 160.0
EndSection

Section "Device"
    Identifier     "Configured Video Device"
    Driver         "nvidia"
    VendorName     "NVIDIA"
    BoardName      "NVIDIA GeForce4 (generic)"
    BusID          "PCI:1:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier     "device1"
    Driver         "nvidia"
    VendorName     "NVIDIA"
    BoardName      "NVIDIA GeForce4 (generic)"
    BusID          "PCI:1:0:0"
    Screen          1
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce FX 5500"
EndSection

Section "Screen"
    Identifier     "Default Screen"
    Device         "Configured Video Device"
    Monitor        "Configured Monitor"
    DefaultDepth    24
    Option         "AddARGBGLXVisuals" "True"
    SubSection     "Display"
        Virtual     1280 960
        Depth       24
        Modes      "1024x768@75" "1024x768@70" "832x624@75" "1024x768@60" "800x600@60" "1280x960@60" "800x600@75" "800x600@72" "800x600@56" "640x480@75" "640x480@72" "640x480@60"
    EndSubSection
EndSection

Section "Screen"
    Identifier     "screen1"
    Device         "device1"
    Monitor        "monitor1"
    DefaultDepth    24
    Option         "AddARGBGLXVisuals" "True"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "TwinViewXineramaInfoOrder" "CRT-0"
    Option         "metamodes" "1024x768@75 +0+0; 1024x768@70 +0+0; 832x624@75 +0+0; 1024x768@60 +0+0; 800x600@60 +0+0; 1280x960@60 +0+0; 800x600@75 +0+0; 800x600@72 +0+0; 800x600@56 +0+0; 640x480@75 +0+0; 640x480@72 +0+0; 640x480@60 +0+0; 1024x768 +0+0"
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection

comunque. tutto è tornato a posto ... meglio di prima. (good)