I have recently installed Kubuntu 26.04 LTS on a new Lenovo Thinkbook 16 Gen 8 laptop. Everything was going great ... until early yesterday morning.
After some early AM random surfing, I shutdown the laptop (I did not put it in 'sleep' mode).
However, then the back-lighting for every key on the keyboard lit up !! The laptop did shutdown, but the back-lighting remained on. I attempted to log back in, aiming to shut the system down again but could not do so. Pressing the power button did nothing; holding the power button down for an extended period did nothing - the system would not re-boot. I went back to bed, figuring that everything would sort itself out by morning.
However, the status was exactly the same when I awoke later that morning (5am). All back-lighting was still on. I should note that I normally keep the power plugged-in when at home. I decided to unplug the power supply and let the battery run-down to zero, hoping this would solve the issue. Fortunately it did. When the battery had reached zero, I plugged the power in again and was then able to turn the laptop on.
I used AI (Claude) to research the problem. Aided by the AI, I checked the relevant page for my device on the Lenovo support website, as well as the boot logs for my device. The AI was able to determine that the event was related to a somewhat uncommon EC issue.
I am not entirely certain if this was a 'Kubuntu' problem or a 'Lenovo' problem. The problem has not re-occurred, even after multiple re-boots. Additionally, I had been running Kubuntu for several days before the issue.
I would appreciate if someone who knows Kubuntu more than I (ie: most of you !!) could shed some light on this issue.
After some early AM random surfing, I shutdown the laptop (I did not put it in 'sleep' mode).
However, then the back-lighting for every key on the keyboard lit up !! The laptop did shutdown, but the back-lighting remained on. I attempted to log back in, aiming to shut the system down again but could not do so. Pressing the power button did nothing; holding the power button down for an extended period did nothing - the system would not re-boot. I went back to bed, figuring that everything would sort itself out by morning.
However, the status was exactly the same when I awoke later that morning (5am). All back-lighting was still on. I should note that I normally keep the power plugged-in when at home. I decided to unplug the power supply and let the battery run-down to zero, hoping this would solve the issue. Fortunately it did. When the battery had reached zero, I plugged the power in again and was then able to turn the laptop on.
I used AI (Claude) to research the problem. Aided by the AI, I checked the relevant page for my device on the Lenovo support website, as well as the boot logs for my device. The AI was able to determine that the event was related to a somewhat uncommon EC issue.
I am not entirely certain if this was a 'Kubuntu' problem or a 'Lenovo' problem. The problem has not re-occurred, even after multiple re-boots. Additionally, I had been running Kubuntu for several days before the issue.
I would appreciate if someone who knows Kubuntu more than I (ie: most of you !!) could shed some light on this issue.