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Keyboard momentarily unresponsive after boot or waking up from uspend (Ubuntu 22.04)

kr flag

I am running Ubuntu 22.04 on a HP Spectre 13-aw2xxx. Here's my problem:

  • After the computer boots up or wakes up from suspend, the keyboard is unresponsive for a short period of time, from a few seconds to a full minute.
  • By unresponsive, I mean: I cannot type in my password and Caps Lock key is unresponsive (and LED indicator doesn't light up). However, even when unresponsive, the keyboard backlight is on and Function Keys are working fine (I tested Screen Brightness Up/Down, Keyboard Backlight Toggle, Mute, Volume Up/Down).
  • The trackpad is not affected, and always immediately responsive on boot or after waking up from suspend.
  • Most of the time, I get the keyboard to become responsive again by clicking outside and inside the password textbox a few times, or clicking the Show/Hide password icon a few times. I'm not entirely sure whether it has any effect.
  • Very rarely, while I'm typing, the keyboard will become unresponsive after holding the letter I was typing when it froze for a short time (occurred this morning, and I got: "dddddddddd"). Trackpad still unaffected. Keyboard becomes responsive again after some time. I don't know if clicking in textboxes of other programs, as I do when it happens, has any effect.

What I tried so far:

  • Reinstalling input devices drivers with sudo apt-get install xserver-xorg-input-all, as suggested in another thread about unresponsive keyboards. Did not work.

I have no idea what's the cause and lots of answers I found were about earlier versions of Ubuntu, so I'm not sure whether I should try them or not. I hope someone will be able to help!

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