Problem with X server under Satellite 1800-514

hi everybody,

I have installed a debian 2.4.18 on laptop toshiba Satellite 1800-514. Today the X server works fine with fbdev. I have modified the lilo.conf and have used hdparm, toshset (toshset -cpu fast) and enlightnement. But it's very slowly.....when i want watch a DVD or an AVI files (cause fbdev don't accelerate and the trident Cyberblade isn't a very good video card).

this notebook has the following hardware :

Celeron 1 GHz CPU
128 Mb RAM (There are two expansion slots: one is filled with shipped RAM module, one is free. Max installable memory: 512 Mb )
14' LCD TFT display (Max resolution 1024x768, smaller resolution can be centered or stretched in the display)
CD/DVD-ROM
1 HD 15Gb
Touch Pad with 2 Keys (PS/2 mouse compatible)
2 PCMCIA Slots
2 USB ports
1 Video Out (max 65536 colors)
1 TV Out
1 Serial (9 pin)
1 Parallel
1 IRDA
1 Mic in
1 Audio out
1 PS/2 port.

I know it's possible to use this laptop and X without fbdev. I have tried with generic driver "Trident", and have this error :

----

(II) TRIDENT: driver for Trident chipsets: tvga8900d, cyber9320, cyber9388,
        cyber9397, cyber9397dvd, cyber9520, cyber9525dvd, cyberblade/e4,
        tgui9420dgi, tgui9440agi, tgui9660, tgui9680, providia9682,
        providia9685, cyber9382, cyber9385, 3dimage975, 3dimage985, blade3d,
        cyberbladei7, cyberbladei7d, cyberbladei1, cyberbladei1d,
        cyberbladeAi1, cyberbladeAi1d, cyberbladeXP, cyberbladeXPm
(--) Assigning device section with no busID to primary device
(EE) No devices detected.

Fatal server error:
no screens found

When reporting a problem related to a server crash, please send
the full server output, not just the last messages.
This can be found in the log file "/var/log/XFree86.0.log".
Please report problems to submit@bugs.debian.org.

XIO: fatal IO error 104 (Connection reset by peer) on X server ":0.0"
after 0 requests (0 known processed) with 0 events remaining.
-----

When i change the drivers in XFreeConfig-4 (trident to fndev) all works fine, but under fbdev. I would like to try generic drivers. (xfree86-common 4.1.0-16 X Window System (XFree86) infrastructure)

Anybody can help me ?!

Than in Advance,

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My XFreeConfig-4 :

Section "Files"
        FontPath        "unix/:7100"                    # local font server
        # if the local font server has problems, we can fall back on these
        FontPath        "/usr/lib/X11/fonts/misc"
        FontPath        "/usr/lib/X11/fonts/cyrillic"
        FontPath        "/usr/lib/X11/fonts/100dpi/:unscaled"
        FontPath        "/usr/lib/X11/fonts/75dpi/:unscaled"
        FontPath        "/usr/lib/X11/fonts/Type1"
        FontPath        "/usr/lib/X11/fonts/Speedo"
        FontPath        "/usr/lib/X11/fonts/100dpi"
        FontPath        "/usr/lib/X11/fonts/75dpi"
EndSection

Section "Module"
        Load    "GLcore"
        Load    "bitmap"
        Load    "dbe"
        Load    "ddc"
        Load    "dri"
        Load    "extmod"
        Load    "freetype"
        Load    "glx"
        Load    "int10"
        Load    "pex5"
        Load    "record"
        Load    "speedo"
        Load    "type1"
        Load    "vbe"
        Load    "xie"
EndSection

Section "InputDevice"
        Identifier      "Generic Keyboard"
Driver          "keyboard"
        Option          "CoreKeyboard"
        Option          "XkbRules"      "xfree86"
        Option          "XkbModel"      "pc105"
        Option          "XkbLayout"     "fr"
EndSection

Section "InputDevice"
        Identifier      "Configured Mouse"
        Driver          "mouse"
        Option          "CorePointer"
        Option          "Device"                "/dev/psaux"
        Option          "Protocol"              "PS/2"
EndSection

Section "InputDevice"
        Identifier      "Generic Mouse"
        Driver          "mouse"
        Option          "SendCoreEvents"        "true"
        Option          "Device"                "/dev/input/mice"
        Option          "Protocol"              "ImPS/2"
EndSection

Section "Device"
        Identifier      "CyberBlade"
#       Driver          "trident"
        Driver          "fbdev"
        Option          "accel"
EndSection

Section "Monitor"
        Identifier      "Toshiba LcD"
#       HorizSync       30-70
#       VertRefresh     50-100
        HorizSync       30-50
        VertRefresh     50-75
        Option          "DPMS"
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Device          "CyberBlade"
        Monitor         "Toshiba LcD"
        DefaultDepth    24
        SubSection "Display"
                Depth           1
                Modes           "1024x768"
        EndSubSection
        SubSection "Display"
                Depth           4
              Modes           "1024x768"
        EndSubSection
        SubSection "Display"
                Depth           8
                Modes           "1024x768"
        EndSubSection
        SubSection "Display"
~               Depth           15
                Modes           "1024x768"
        EndSubSection
        SubSection "Display"
                Depth           16
                Modes           "1024x768"
        EndSubSection
        SubSection "Display"
                Depth           24
                Modes           "1024x768"
        EndSubSection
EndSection

Section "ServerLayout"
        Identifier      "Default Layout"
        Screen          "Default Screen"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
        InputDevice     "Generic Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection

### END DEBCONF SECTION

-------

My lilo.conf

--------

(.....)

vga=0x318

# Kernel command line options that apply to all installed images go
# here. See: The `boot-prompt-HOWO' and `kernel-parameters.txt' in
# the Linux kernel `Documentation' directory.
#
# append=""

# Boot up Linux by default.
#
default=Linux-2.4

image=/vmlinuz
        label=Linux
        read-only
#       restricted
#       alias=1

image=/boot/bzImage
        label=Linux-2.4
        read-only
        append="idebus=66 tosh_fn=0x62"
#       restricted
#       alias=1
----------