CentOS 5.9 x64 + T420s Xorg crash problem.

OS CentOS 5.9 x64
NB: Thinkpad T420s

Xorg.0.log
==
(II) Module ddc: vendor=”X.Org Foundation”
compiled for 7.1.1, module version = 1.0.0
ABI class: X.Org Video Driver, version 1.0
(II) VESA(0): VESA VBE DDC supported
(II) VESA(0): VESA VBE DDC Level none
(II) VESA(0): VESA VBE DDC transfer in appr. 0 sec.
(II) VESA(0): VESA VBE DDC read failed
(II) VESA(0): VESA VBE PanelID read successfully
(II) VESA(0): PanelID returned panel resolution 1600×900

Backtrace:
0: X(xf86SigHandler+0x71) [0x4868d1]
1: /lib64/libc.so.6 [0x2b64029a72d0]
2: /usr/lib64/xorg/modules/drivers/vesa_drv.so [0x2b6404b3ef09]
3: X(InitOutput+0x9cd) [0x46431d]
4: X(main+0x26f) [0x4335ef]
5: /lib64/libc.so.6(__libc_start_main+0xf4) [0x2b64029949c4]
6: X(FontFileCompleteXLFD+0x241) [0x432aa9]

Fatal server error:
Caught signal 11. Server aborting
==

Solution:
$ yum install fonts-chinese.noarch

Why, I don’t know.