求助：我的fedora10经常死机是怎么回事？

求助：我的fedora10经常死机是怎么回事？ 我用的是[font=Liberation Serif, serif]lenovo3000[/font]系列笔记本。[font=Liberation Serif, serif]

[/font]系统信息：[font=Liberation Serif, serif]
fedora
[/font]版本[font=Liberation Serif, serif]10
[/font]内核[font=Liberation Serif, serif]linux2.627.5[/font]－[font=Liberation Serif, serif]117.fc10.i686
gnome2.24.1

[xuhong@SMYY~]$ lspci
00:00.0 Host bridge: Intel Corporation Cantiga MemoryController Hub (rev 07)
00:02.0 VGA compatible controller: IntelCorporation Cantiga Integrated Graphics Controller (rev 07)
00:02.1Display controller: Intel Corporation Cantiga Integrated GraphicsController (rev 07)
00:1a.0 USB Controller: Intel Corporation82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1b.0 Audiodevice: Intel Corporation 82801I (ICH9 Family) HD Audio Controller(rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9Family) PCI Express Port 1 (rev 03)
00:1d.0 USB Controller: IntelCorporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge(rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC InterfaceController (rev 03)
00:1f.2 IDE interface: Intel CorporationICH9M/M-E 2 port SATA IDE Controller (rev 03)
00:1f.3 SMBus: IntelCorporation 82801I (ICH9 Family) SMBus Controller (rev 03)
00:1f.5IDE interface: Intel Corporation ICH9M/M-E 2 port SATA IDE Controller(rev 03)
07:00.0 Ethernet controller: Broadcom Corporation NetLinkBCM5906M Fast Ethernet PCI Express (rev 02)
[/font]


[font=Liberation Serif, serif][root@SMYY X11]# glxinfo|grep rendering[/font]
[font=Liberation Serif, serif]direct rendering: Yes[/font]

[font=Liberation Serif, serif][root@SMYY X11]# glxgears[/font]
[font=Liberation Serif, serif]4535 frames in 5.0 seconds =906.839 FPS[/font]
[font=Liberation Serif, serif]4709 frames in 5.0 seconds =941.603 FPS[/font]
[font=Liberation Serif, serif]4709 frames in 5.0 seconds =941.639 FPS[/font]
[font=Liberation Serif, serif]4707 frames in 5.0 seconds =941.321 FPS[/font]
[font=Liberation Serif, serif]4708 frames in 5.0 seconds =941.464 FPS[/font]

另外，在[font=Liberation Serif, serif]/etc/X11[/font]下没有找到[font=Liberation Serif, serif]xorg.conf[/font]文件，在[font=Liberation Serif, serif]/root[/font]下有个[font=Liberation Serif, serif]xorg.conf.new[/font]文件，内容为：
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "catalogue:/etc/X11/fontpath.d"
FontPath "built-ins"
EndSection

Section "Module"
Load "dri"
Load "extmod"
Load "glx"
Load "dbe"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Device"
### Available Driver options are:-
### Values: : integer, : float, : "True"/"False",
### : "String", : " Hz/kHz/MHz"
### [arg]: arg optional
#Option "NoAccel" # []
#Option "SWcursor" # []
#Option "ColorKey" #
#Option "CacheLines" #
#Option "Dac6Bit" # []
#Option "DRI" # []
#Option "NoDDC" # []
#Option "ShowCache" # []
#Option "XvMCSurfaces" #
#Option "PageFlip" # []
Identifier "Card0"
Driver "intel"
VendorName "Intel Corporation"
BoardName "Cantiga Integrated Graphics Controller"
BusID "PCI:0:2:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

[font=Liberation Serif, serif]
[/font]所遇问题：
[font=Liberation Serif, serif]1[/font]、我的显卡是否已经正常驱动？[font=Liberation Serif, serif]
2[/font]、开启桌面[font=Liberation Serif, serif]3D[/font]特效时计算机经常停止响应，无法进行任何操作，只能关闭电源重新启动；[font=Liberation Serif, serif]
3[/font]、系统长时间不操作，自动关闭监视器后，无法唤醒，也无法进行任何操作；[font=Liberation Serif, serif]
4[/font]、[font=Liberation Serif, serif]alt[/font]＋[font=Liberation Serif, serif]ctrl[/font]＋[font=Liberation Serif, serif]f2[/font]切换到终端下，再切换回图形界面就黑屏，无法进行任何操作。[font=Liberation Serif, serif]

[/font]请问各位高手多多指教，到底是硬件还是软件的问题？多谢！