使用dmesg|tail如下: [17184303.900000] usb 1-4 USB disconnect, address 2 [17184307.900000] ohci_hcd 0000:00:0b.0: IRQ INTR_SF lossage 搜了一下发现有人也有这种情况! 具体方法如下: gedit/boot/grub/menu.lst kernel /vmlinuz-2.6.15-27-386 root=/dev/hda7 ro noapic irqpoll quiet splash initrd /initrd.img-2.6.15-27-386 说acpi是高级电源管理,要关掉才行!