Hi,all, When linux 2.4.3 startup, our serial console can not work. I use another serial port to print some debug messages, it likes following: hda: 16841664 sectorsp: (8623 MB)p: w/512KiB Cachep:, CHS=16708/16/63p: Partition check: hda:[PTBL] [1048/255/63] hda1 hda4 Serial driver version 5.05 (2000-12-13) with MANY_PORTS SHARE_IRQ SERIAL_PCI e nabled ttyS00 at 0xb8000000 (irq = 2) is a 16550A ttyS01 at 0xb8100000 (irq = 3) is a 16550A VFS: Mounted root (ext2 filesystem) readonly. Freeing prom memory: 1020kb freed Freeing unused kernel memory: 52k freed kernel BUG at page_alloc.c:191! kernel BUG at page_alloc.c:191! kernel BUG at page_alloc.c:191! Do someone know what's problem it is? If you know, please help me. Thanks! Barry __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/