While DragonRise usb gamepad plugged-in no one Linux kernel (tested by me) can boot up my system. This is looks like a "black screen hang" without any activity. If i unplug gamepad within small time (about 10 seconds) boot process continues as normal. Here is part of /var/log/messages: http://pastebin.com/wMPMKFiv Actual hang is between those events (~9 seconds): Mar 3 18:29:35 vortex kernel: [ 0.064345] x86: Booting SMP configuration: Mar 3 18:29:35 vortex kernel: [ 0.064357] .... node #0, CPUs: #1 #2 #3 Mar 3 18:29:35 vortex kernel: [ 9.091236] x86: Booted up 1 node, 4 CPUs Event at timestamp 9.091236 occurred after i unplugged gamepad. Windows 8.1 has no boot problems with that gamepad plugged in. My hardware: Motherboard: MSI P67A-C45 (B3) Chipset: Intel P67 (B3) CPU: Intel(R) Core(TM) i5-2400 Gamepad: ID 0079:0011 DragonRise Inc. Gamepad lsusb -v for gamepad: http://pastebin.com/Fu8aerdp /proc/config.gz from Gentoo: http://pastebin.com/3FausB66