I had (may still have) some issues with a Logitech USB optical wheel mouse on Fedora Core 2. My experiences may or may not be useful to you. System: Dell 8200 768 MB memory 2.0 GHz P4 NVidia 5200 with 256 MB memory (patiently waiting for the NVidia driver) 80 GB Maxtor (NTFS - Windows/2000 Professional) 60 GB Western Digital (Swap, boot, root - Fedora Core 2) SONY CRX230 R/W CDROM Sound Cards Intel 82801BA AC'97 (disabled in BIOS) Turtle Beach Santa Cruz (CS46xx with Yamaha XG50 daughter card) USB 82891BA/BAM USB Hub #1 (Intel) 82891BA/BAM USB Hub #2 (Intel) USB Devices Dell USB 7HK Keyboard Dell USB Keyboard Hub USB-PS/2 Optical Mouse (Logitech MX500 Optical Mouse) First of all, I upgraded the BIOS on the motherboard. It turns out that I was 4 revisions behind (oops). This happened to solve another "problem" in that ALSA was seeing an on-board Intel sound card even though it was disabled in the BIOS settings. This didn't happen in Fedora Core 1 using ALSA. I then have this alias in /etc/modprobe.conf alias usb-controller uhci-hcd Without this alias I can access neither the mouse nor the keyboard. I have also disabled the console mouse support in init 3, although with the upgraded BIOS I may try enabling it again. I normally work at init 5 in KDE, so mouse support in init 3 is not a big deal for me. With all of that, I get the following messages via dmesg: usbcore: registered new driver hiddev usbcore: registered new driver hid USB Universal Host Controller Interface driver v2.2 uhci_hcd 0000:00:1f.2: UHCI Host Controller PCI: Setting latency timer of device 0000:00:1f.2 to 64 uhci_hcd 0000:00:1f.2: irq 11, io base 0000ff80 uhci_hcd 0000:00:1f.2: new USB bus registered, assigned bus number 1 hub 1-0:1.0: USB hub found hub 1-0:1.0: 2 ports detected uhci_hcd 0000:00:1f.4: UHCI Host Controller PCI: Setting latency timer of device 0000:00:1f.4 to 64 uhci_hcd 0000:00:1f.4: irq 9, io base 0000ff60 uhci_hcd 0000:00:1f.4: new USB bus registered, assigned bus number 2 hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected usb 1-1: new full speed USB device using address 2 hub 1-1:1.0: USB hub found hub 1-1:1.0: 3 ports detected usb 1-2: new low speed USB device using address 3 input: USB HID v1.10 Mouse [B16_b_02 USB-PS/2 Optical Mouse] on usb-0000:00:1f.2-2 usb 1-1.1: new full speed USB device using address 4 input: USB HID v1.00 Keyboard [NMB Dell USB 7HK Keyboard] on usb-0000:00:1f.2-1.1 input,hiddev96: USB HID v1.00 Device [NMB Dell USB 7HK Keyboard] on usb-0000:00:1f.2-1.1 I will occasionally get the following messages: Jun 11 08:49:28 phoenix kernel: drivers/usb/input/hid-input.c: event field not found Also, there seems to be a race condition on boot that I cannot reliably reproduce. Sometimes there is no response from the keyboard and I will have to reboot twice on going from Windows/2000 to Fedora Core 2. This hasn't happened since upgrading the BIOS, but then again it appears to be a race condition . . . so who knows. In short: 1) Upgrade to the latest firmware software (BIOS, other motherboard chips) 2) Make sure that the following is in /etc/modprobe.conf alias usb-controller uhci-hcd 3) Turn off console mouse support if you are at init 5 4) Hope you won't get a race condition for the keyboard I found items 1) and 2) to be absolutely necessary to get my USB keyboard and mouse to work. As has been pointed out in the list already, getting USB support correct in the BIOS is not a trivial task. Earlier revisions of your BIOS may have problems that the newest version of Fedora now uncovers. /mde/ just my two cents . . .