On 06/22/2013 09:05 AM, Chuck Forsberg WA7KGX wrote: > I have a SIIG USB keyboard with mechanical switches. > The mechanical switches greatly reduce the error rate when I type. > > The p8z77-vle plus BIOS does not seem to have a problem with this keyboard. > Once Fedora finishes booting the keyboard is recognized. > The grub2 boot however does not read keyboard presses, > preventing selection of anything but the latest Fedora installation. > > A workaround is to use a purple USB keyboard to PS2 interface. > Please identify the specific keyboard. Run /usr/bin/lsusb, or find the info in syslog (often /var/log/messages) or output from dmesg, or "journalctl -a --this-boot". It is a lot easier to search for info or experiences related to a specific model number instead of a description such as "a SIIG USB keyboard with mechanical switches." Examples: ----- $ lsusb | grep -i keyboard Bus 003 Device 003: ID 1e54:2030 TypeMatrix 2030 USB Keyboard $ dmesg | grep -i keyboard [ 2.107612] hid-generic 0003:1E54:2030.0002: input,hidraw1: USB HID v1.10 Keyboard [TypeMatrix.com USB Keyboard] on usb-0000:00:13.1-2/input0 ----- Obviously the first thing to check is which scan codes are generated when. Many electronic keyboards generate one code on keypress and a different code on key release, for *EVERY* key. (The release code often is 0x80 more than the press code.) Some mechanical keyboards omit the codes for key release, except for "Shift" keys. /usr/bin/xev provides some diagnostic info for HID events that are seen by X11, including KeyPress and KeyRelease. Does xev see both events for the "SIIG USB keyboard with mechanical switches"? -- test mailing list test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/test
