My Logitech USB mouse does not work. The lsmod output is: Module Size Used by Tainted: P hid 12440 0 (unused) i810_audio 27752 1 (autoclean) ac97_codec 17192 0 (autoclean) [i810_audio] soundcore 6468 2 (autoclean) [i810_audio] parport_pc 19076 1 (autoclean) lp 9060 0 (autoclean) parport 37056 1 (autoclean) [parport_pc lp] 3c59x 31280 1 ipchains 51596 9 floppy 58012 0 (autoclean) sg 36492 0 (autoclean) sr_mod 18168 0 (autoclean) microcode 4732 0 (autoclean) ide-scsi 12208 0 scsi_mod 108136 3 [sg sr_mod ide-scsi] ide-cd 35776 0 cdrom 33760 0 [sr_mod ide-cd] ohci1394 29160 0 (unused) ieee1394 64868 0 [ohci1394] agpgart 54820 3 (autoclean) nvidia 1764992 11 (autoclean) keybdev 2976 0 (unused) mousedev 5556 2 input 5888 0 [keybdev mousedev] usb-uhci 26380 0 (unused) usbcore 79168 1 [hid usb-uhci] ext3 71300 4 jbd 52084 4 [ext3] So the usb-uhci and hdi module are loaded but when I plug in the mouse the following lines apeared in the /var/log/messages Nov 9 23:54:37 mobilesa kernel: hub.c: new USB device 00:1d.0-1, assigned address 4 Nov 9 23:54:37 mobilesa kernel: : USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb1:4.0 Nov 9 23:54:40 mobilesa usb.agent[1666]: missing kernel or user mode driver hid Nov 9 23:54:40 mobilesa usb.agent[1666]: missing kernel or user mode driver mousedev What means that? I've compiled a custom kernel based on the redhat config. So that should not be the problem. Or? Please help!