I have just change my computer: here is my new config:
AMD Athlon64 3000+ @ 2000MHz on Asus K8V-F with Via K8T800 Chipset
512 MB, 2 HDs 200 GB (WinXP)+ 80GB (MDK10 Official)
ATI RAdeon 9800 Pro AIW 128 MB

More infos at:
www;targa;co;uk*cms*targa_2_459.php?produkt_id=284

I just add the 80 GB Maxtor HD for MDK10, dual boot by lilo.

I have a big problem of freeze in several conditions:
- when pressing Ctrl + Alt + Fn in KDE to go in a console,
- when closing a session in KDE or Gnome, or at reboot, except if launch in a console by "reboot" or "halt",
- when launching "Enemy Territory", or UT2004
- in fact, when i try to use my graphic card in a certain way (i think so).

What happens:
System hang and screen becomes dark with "No Signal" on display, power is still on (HD and fan working) but everithing seams off! Only thing to do: Power Off, then Power on again.

As the problem seams becoming from my ATI Radeon, I have installed the fglrx ver 3.7.6 driver from ATI for XFree86 V4.3.0. Acceleration is fine now, but freezes remain.

There is a thread here, from C++Boar, related to nforce 2 chipset (thread id 163732)
Is the solution OK for my config?
Is the problem comming from my AMD64 Athlon working with a "std" 32 bits kernel? (2.6.3-7mdk)
Lots of questions, and still no answers, even on MandrakeClub or MandrakeExpert !

As i am not able to post url yet, i have replace . by ; and / by * in targa site!!!

Pô cool !

Any idea how to fix?

Help appreciated.

If you press Ctrl-Alt-Fn, then Ctrl-Alt-F7, does your KDE screen come back?

It sounds to me that an entry in the XF86Config-4 may be causing the problem. I don't think that the computer is actually locking up but the display may be going to the other output on a dual head card or the settings are out of bounds for the monitor. I bet that if when the screen goes blank, you were to type in 'startx' and enter, that KDE would come back.

You could change to the generic 'vesa' video driver until you get the driver/monitor/XF86Config settings corrected.

No, even Ctrl-Alt-Bcksp to kill X or Ctrl-Alt-Suppr to reboot are worthless. My kb is off, so impossible to type anything,even "startx"!

Regarding my XF86Config-4 file, i think i have disable dual head support, but i may be wrong. Regarding settings out of bounds for monitor, perhaps you could check the following (i have removed all commented lines 'cause original size is 20 kb!):

###TOP###
# File: XF86Config-4
# File generated by fglrxconfig (C) ATI Research, a substitute for xf86config.

Section "dri"
Mode 0666
EndSection

Section "Module"
Load "dbe" # Double buffer extension
SubSection "extmod"
Option "omit xfree86-dga" # don't initialise the DGA extension
EndSubSection
Load "type1"
Load "freetype"
Load "glx" # libglx.a
Load "dri" # libdri.a
EndSection

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
EndSection

Section "ServerFlags"

EndSection

Section "InputDevice"
Identifier "Keyboard1"
Driver "Keyboard"
Option "AutoRepeat" "500 30"
Option "XkbRules" "xfree86"
Option "XkbModel" "pc101"
Option "XkbLayout" "fr"
EndSection

Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "ImPS/2"
Option "ZAxisMapping" "4 5"
Option "Device" "/dev/mouse"
EndSection

Section "Monitor"
Identifier "Monitor0"
HorizSync 31.5 - 68.7
VertRefresh 60 - 85
Option "DPMS"
EndSection

Section "Device"
Identifier "Standard VGA"
VendorName "Unknown"
BoardName "Unknown"
Driver "vga"
EndSection

Section "Device"
Identifier "ATI Graphics Adapter"
Driver "fglrx"
Option "no_accel" "no"
Option "no_dri" "no"
Option "mtrr" "off" # disable DRI mtrr mapper, driver has its own code for mtrr
Option "DesktopSetup" "0x00000000"
Option "MonitorLayout" "AUTO, AUTO"
Option "IgnoreEDID" "off"
Option "HSync2" "unspecified"
Option "VRefresh2" "unspecified"
Option "ScreenOverlap" "0"
Option "NoTV" "yes"
Option "TVStandard" "NTSC-M"
Option "TVHSizeAdj" "0"
Option "TVVSizeAdj" "0"
Option "TVHPosAdj" "0"
Option "TVVPosAdj" "0"
Option "TVHStartAdj" "0"
Option "TVColorAdj" "0"
Option "GammaCorrectionI" "0x00000000"
Option "GammaCorrectionII" "0x00000000"
Option "Capabilities" "0x00000000"
Option "VideoOverlay" "on"
Option "OpenGLOverlay" "off"
Option "CenterMode" "off"
Option "PseudoColorVisuals" "off"
Option "Stereo" "off"
Option "StereoSyncEnable" "1"
Option "FSAAEnable" "no"
Option "FSAAScale" "1"
Option "FSAADisableGamma" "no"
Option "FSAACustomizeMSPos" "no"
Option "FSAAMSPosX0" "0.000000"
Option "FSAAMSPosY0" "0.000000"
Option "FSAAMSPosX1" "0.000000"
Option "FSAAMSPosY1" "0.000000"
Option "FSAAMSPosX2" "0.000000"
Option "FSAAMSPosY2" "0.000000"
Option "FSAAMSPosX3" "0.000000"
Option "FSAAMSPosY3" "0.000000"
Option "FSAAMSPosX4" "0.000000"
Option "FSAAMSPosY4" "0.000000"
Option "FSAAMSPosX5" "0.000000"
Option "FSAAMSPosY5" "0.000000"
Option "UseFastTLS" "0"
Option "BlockSignalsOnLock" "on"
Option "UseInternalAGPGART" "yes"
Option "ForceGenericCPU" "no"
BusID "PCI:1:0:0" # vendor=1002, device=4e48
Screen 0
EndSection

Section "Screen"
Identifier "Screen0"
Device "ATI Graphics Adapter"
Monitor "Monitor0"
DefaultDepth 24
Subsection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
ViewPort 0 0 # initial origin if mode is smaller than desktop
EndSubsection
EndSection

Section "ServerLayout"
Identifier "Server Layout"
Screen "Screen0"
InputDevice "Mouse1" "CorePointer"
InputDevice "Keyboard1" "CoreKeyboard"
EndSection
### EOF ###

I have now installed the vesa driver with MCC, rather than the ATI one.

All is fine now, I can logout from KDE, login again as another user, change of console by Ctrl-Alt-Fn, come back in X with Ctrl-Alt-F7, kill X with Ctrl-Alt-Backspace, etc..

The only think, I have lost my glx support: glxgears give 450 fps in window and 50 fps in full screen (1024x768)!

Any idea?

Yes, that is because you are using a generic vesa driver rather than an ATI GL driver. I don't have an ATI graphics card. You may want to look in their website and see if they have a more recent driver you could try.

At least you know what the problem is now.

Look in the /usr directory for ATI documentation. I'm wondering about the line in the setup that says: Option "MonitorLayout" "AUTO, AUTO". This looks a little like a dual head setup. Could the output be redirected to the other video connector when you leave x windows.

Someone with an ATI card may respond with particular advice about the XF86Config file you posted.

I've got it!

I have reinstalled ATI x server (the one from MDK10, not the ATI one) with MCC, and i add those options "noapic nolapic" in the append line in my lilo.conf, in the section where my kernel is loaded.

All is fine now, even acceleration: more than 120fps in ArmageTron, all video options to the top!

I've read somewhere for the "noapic nolapic" options, ut i don't know what it is for?

You can share if you do!

Thanks to all.