!! 急,内核升级2.6后,USB设备识别不上???
原内核为2.4 ,现在升级到2.6内核,结果USB设备识别不了,U盘,移动硬盘都试过,
在2.6内核下将移动硬盘插上后,硬盘灯会闪二下,用fdisk -l /dev/sda 看不到.
查看dmesg报错如下.
usb 1-2: new high speed USB device using ehci_hcd and address 3
usb 1-2: device not accepting address 3, error -71
usb 1-2: new high speed USB device using ehci_hcd and address 4
usb 1-2: device not accepting address 4, error -71
usb 1-2: new high speed USB device using ehci_hcd and address 5
usb 1-2: device descriptor read/all, error 8
usb 1-2: new high speed USB device using ehci_hcd and address 6
usb 1-2: device not accepting address 6, error -71
usb 1-2: new high speed USB device using ehci_hcd and address 7
usb 1-2: device not accepting address 7, error -71
usb 1-2: new high speed USB device using ehci_hcd and address 8
usb 1-2: device not accepting address 8, error -71
usb 1-2: new high speed USB device using ehci_hcd and address 9
usb 1-2: device descriptor read/all, error 8
usb 1-2: new high speed USB device using ehci_hcd and address 10
使用lsmod查看:
[root@wang root]# lsmod
Module SizeUsed by
ehci_hcd 279040
sd_mod 165760
usb_storage 638720
scsi_mod 1374162 sd_mod,usb_storage
nvidia 454723212
agpgart 334561 nvidia
i2c_core 207361 nvidia
ohci1394 328120
ieee1394 949961 ohci1394
parport_pc 267240
parport 342401 parport_pc
usbcore 1203403 ehci_hcd,usb_storage
查看USB硬件信息
[root@wang root]# lspci -v | grep USB
00:10.0 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00 [UHCI])
00:10.1 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00 [UHCI])
00:10.2 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00 [UHCI])
00:10.3 USB Controller: VIA Technologies, Inc. USB (rev 81) (prog-if 00 [UHCI])
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86) (prog-if 20 [EHCI])
在grub.conf中配置
default=0
timeout=5
splashimage=(hd0,7)/boot/grub/splash.xpm.gz
title Red Hat Linux (2.6.16.10)
root (hd0,7)
kernel /boot/vmlinuz-2.6.16.10 ro root=LABEL=/ noapic acpi=off
initrd /boot/initrd-2.6.16.10.img
title Red Hat Linux (2.4.20-8)[old]
root (hd0,7)
kernel /boot/vmlinuz-2.4.20-8 ro root=LABEL=/
initrd /boot/initrd-2.4.20-8.img
title Windows 2000
rootnoverify (hd0,0)
chainloader +1
请高人指导一下.
我现在回到2.4内核是可以挂上移动硬盘的,2.6不可以为什么呢?
............ 看来还得靠自己啊,问题我自己解决了。哈哈！！
原来不能使用ehci_hcd 就会报错。关掉 ehci_hcd
rmmod ehci_hcd
然后加载 modprobe uhci_hcd
U盘，移动硬盘就会识别上了。
我是via主板 vt8273 cpu AMD
加载Usb设备的几个重要模块是:sd_modusbcore scsi_mod uhci_hcd
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