see ccMSC's CKB git project for more details (troubleshooting section) Many of the new corsair HID devices (mice and keyboards) fail to initialize correctly on kernel bootup. This is the workaround used to make them work. (Some device ID's, like for the K60 are missing) The code I use in the kernel commandline to bypass the issue on my K95-RGB looks like so: usbhid.quirks=0x1B1C:0x1B11:0x408 The issue has been confirmed on recent (2016) Arch and Fedora kernels for K95-RGB and on Ubuntu's El Capitan with K60. Please add support for these devices, and look into adding support for devices not listed in the above page (K60, K60-RGB, K50, K40, K30, K65(Non-RGB), K90, and the KATAR mouse; there may be some devices I left out but this should be the brunt of their current device names) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html