I've tried to boot with a keylogger loaded on rc.local and as an option on lightdm to see if the keys are captured but I got no input from the moment I leave GRUB and the kernel start to load until the infamous 15 seconds after LighDM is loaded. Since the issue seems to be strongly related to i8042, I've tested some kernel options:
i8042.direct - Put keyboard port into non-translated mode i8042.dumbkbd - Pretend that controller can only read data from keyboard and cannot control its state (Don't attempt to blink the leds) i8042.noaux - Don't check for auxiliary (== mouse) port i8042.noloop - Disable the AUX Loopback command while probing for the AUX port i8042.nomux - Don't check presence of an active multiplexing controller i8042.nopnp - Don't use ACPIPnP / PnPBIOS to discover KBD/AUX controllers i8042.reset - Reset the controller during init and cleanup Again without any tangible results. I've extracted from dmesg all the information from i8042 (with 'i8042.debug' option on GRUB). ** Attachment added: "i8042.debug.txt" https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1596200/+attachment/4692296/+files/i8042.debug.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1596200 Title: Ubuntu 16.04: unresponsive keyboard (15 sec) after grub To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kbd/+bug/1596200/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
