cannot start xserver on Thinkpad 770

I have installed linux on my IBM Thinkpad770. At first, the xfree86 installed with OS was ver 3.3.1, which couldn't detect my display chip(Cyber9397), so I downloaded xfree86 3.3.2 and re-compiled. But although this time the system can detect my cyber9397 chip correctly, xserver still cannot be started. Here is the output of startx:


XFree86 Version 3.3.2 / X Window System
(protocol Version 11, revision 0, vendor release 6300)
Release Date: March 2 1998
        If the server is older than 6-12 months, or if your card is newer
        than the above date, look for a newer version before reporting
        problems.  (see http://www.XFree86.Org/FAQ)
Operating System: Linux 2.0.30 i586 [ELF]
Configured drivers:
  SVGA: server for SVGA graphics adaptors (Patchlevel 0):
      NV1, STG2000, RIVA128, ET4000, ET4000W32, ET4000W32i,
      ET4000W32i_rev_b, ET4000W32i_rev_c, ET4000W32p, ET4000W32p_rev_a,
      ET4000W32p_rev_b, ET4000W32p_rev_c, ET4000W32p_rev_d, ET6000, ET6100,
      et3000, pvga1, wd90c00, wd90c10, wd90c30, wd90c24, wd90c31, wd90c33,
      gvga, ati, sis86c201, sis86c202, sis86c205, tvga8200lx, tvga8800cs,
      tvga8900b, tvga8900c, tvga8900cl, tvga8900d, tvga9000, tvga9000i,
      tvga9100b, tvga9200cxr, tgui9400cxi, tgui9420, tgui9420dgi,
      tgui9430dgi, tgui9440agi, cyber9320, tgui9660, tgui9680, tgui9682,
      tgui9685, cyber9382, cyber9385, cyber9388, cyber9397, cyber9520,
      3dimage975, 3dimage985, clgd5420, clgd5422, clgd5424, clgd5426,
      clgd5428, clgd5429, clgd5430, clgd5434, clgd5436, clgd5446, clgd5480,
      clgd5462, clgd5464, clgd5465, clgd6205, clgd6215, clgd6225, clgd6235,
      clgd7541, clgd7542, clgd7543, clgd7548, clgd7555, ncr77c22, ncr77c22e,
      cpq_avga, mga2064w, mga1064sg, mga2164w, mga2164w AGP, oti067, oti077,
      oti087, oti037c, al2101, ali2228, ali2301, ali2302, ali2308, ali2401,
      cl6410, cl6412, cl6420, cl6440, video7, ark1000vl, ark1000pv,
      ark2000pv, ark2000mt, mx, realtek, AP6422, AT24, AT3D, s3_virge,
      s3_svga, ct65520, ct65525, ct65530, ct65535, ct65540, ct65545,
      ct65546, ct65548, ct65550, ct65554, ct65555, ct68554, ct64200,
      ct64300, generic
(using VT number 7)

...
(--) SVGA: PCI: Trident Cyber 9397 rev 243, Memory @ 0x20400000, 0x20800000   _
(--) Trident chipset version: 0xf3 (Cyber9397)                                _
(--) SVGA: BIOS reports Clock Control Bits 0x3                                _
(--) SVGA: Detected a Trident Cyber 9397.                                     _
(--) SVGA: Detected an TFT  1024x768 Display                                  _
(--) SVGA: Revision 35.                                                       _
(--) SVGA: Using Trident programmable clocks                                  _
(--) SVGA: chipset:  cyber9397                                                _
(--) SVGA: videoram: 2048k                                                    _
(**) SVGA: Using 8 bpp, Depth 8, Color weight: 666                            _
(--) SVGA: Maximum allowed dot-clock: 170.000 MHz                             _
...

(--) SVGA: Virtual resolution set to 1024x768
(--) SVGA: Generic SpeedUps selected (Flags=0x30)
(--) SVGA: Using Linear Frame Buffer at 0x020400000, Size 2MB
_X11TransSocketUNIXConnect: Can't connect: errno = 111
giving up.
xinit:  Connection refused (errno 111):  unable to connect to X server
xinit:  No such process (errno 3):  Server error.

Is there anybody has experience on Thinkpad770 and can help me? Thanks very much!