A purely speculative assumption: For some reason, Logitech hardware can immediately go into autosuspend mode.
To prevent this, you can add the following kernel command line parameter: usbcore.autosuspend=-1 In addition, you should execute the following commands: tee --append /etc/modprobe.d/usbcore.conf << EOF options usbcore autosuspend=-1 EOF update-initramfs -u -k all Note: It depends on the kernel from where the configuration is read, so it is best to add both the parameter and the config file. It may also be helpful to use a different USB port. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1621367 Title: 4.4.0-36: keyboard dead at boot & full disk encryption prompt for password Status in linux package in Ubuntu: Confirmed Bug description: After updating to kernel 4.4.0-36.55, I cannot enter the password for the full disk encrypted drive, that contains the ubuntu installation. Keyboard is totally dead. Nothing else than hardware reset is possible. This bug affects normal, upstart and recovery boot. I don't know whether that is a kernel panik (no led is blinking) or the driver for keyboard is failing. boot.log looks normal to me. Last and working kernel version before the update, was "Ubuntu 4.4.0-34.53-generic 4.4.15". I cannot report "ubuntu-bug linux", because I cannot enter the system. I am willing to investigate, but please give me hints. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1621367/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
