Yes, it is most likely HID issue. Thank you greatly for such a fast answer and for the direction! Peter On Tue, 25 Sep 2018 at 19:39, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Tue, Sep 25, 2018 at 07:29:43PM +0200, Peter Hostačný wrote: > > Hello there, > > > > there is quite a big trouble around few specific keyboards that are > > not working in Linux. > > I personally have "Lenovo Professional Wireless Keyboard and Mouse > > Combo 4X30H56803" > > The keyboard is not working, mouse is. There is a lot of information > > spread across multiple threads of many sites. Issue is described quite > > well in many of them. > > > > - https://askubuntu.com/questions/897729/lenovo-professional-wireless-keyboard-and-mouse-combo-not-working-in-ubuntu?noredirect=1&lq=1 > > - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1771431 > > - https://bugzilla.kernel.org/show_bug.cgi?id=197787 > > - https://unix.stackexchange.com/questions/377830/linux-hid-driver-for-primax-wireless-keyboards/377873#377873 > > - https://forums.lenovo.com/t5/Linux-Discussion/Professional-Wireless-Keyboard-not-working-on-Linux/td-p/3726486 > > > > Could you please have a look at it? I will be glad to provide any > > information if needed. > > You might want to post this to the linux-input@xxxxxxxxxxxxxxx list. If > one portion of the device is working, odds are it's not a USB problem, > but rather a HID issue. > > thanks, > > greg k-h