Dear Eugen, Am Montag 10 August 2020 schrieb Eugen Dedu: > Hi, > > I have a Dell Latitude 5580 laptop, and have been a happy debian > unstable user for 20 years. I have a very weird problem with its > builtin keyboard which slows down my work significantly (ctrl-c, > ctrl-x, ENTER etc. do not work): > > Since several months ago some keys on my keyboard do not work, in all > the applications (e.g. gnome-terminal, emacs, thundebird, firefox). > When I press on them, very often nothing happens (usually, I press on > them for 10 seconds to make appear the character), sometimes the key > appears twice, and sometimes it works flawlessly. When it works, it > works for several minutes or several hours; similarly, when it does > not work, it does not for several minutes or hours or days. I use > very often suspend/resume, I also use xmodmap and awesome window > manager, but I suppose this is irrelevant. > > The problematic keys are found on the last row: xcvm,. (but zbn work) > and the bottom keys (ctrl, alt, window, however space works always > correctly), plus ENTER key. > > I have always thought that it is a X problem which will get fixed. > Interesting, a few days ago I noticed that on grub I have the same > problem: c and ENTER did not work. So now I wonder if it is not a > hardware problem, however sometimes it works for a long time!
Just recently I discovered that a keyboard doesn't do anything when I hit one of these keys (german qwertz layout): qwer uiop 789+ They are all on the same row and I believe something broke inside the keyboard (I remember vaguely it having let fall down off the desk). Haven't investigated yet. > > I have looked at Xorg.0.log, without seeing anything wrong. > > How can I track down where the problem is, and fix it? Maybe test with another external keyboard?! HTH Kind regards, Stefan