I have the same issues with a Lenovo Thinkpad X260, Ubuntu 24.04.1
Note: I had the same exact issue on Ubuntu 22.04. I had hoped that a fresh install with 24.04.1 would solve this - it didn't.
If it goes to sleep, I can't wake it again, have to force shut down and reboot by pressing power button for more than 5 seconds.
I can't shut it down with just software (power off icon on menu). It seems to turn off, but keyboard led and fans keep working, depletes battery.
To power off, I must press power button for 5 seconds.
I discovered this when I had no battery left the next morning, after a normal shutdown, and had to troubleshoot to find the root cause.
I have the same issues with a Lenovo Thinkpad X260, Ubuntu 24.04.1
Note: I had the same exact issue on Ubuntu 22.04. I had hoped that a fresh install with 24.04.1 would solve this - it didn't.
If it goes to sleep, I can't wake it again, have to force shut down and reboot by pressing power button for more than 5 seconds.
I can't shut it down with just software (power off icon on menu). It seems to turn off, but keyboard led and fans keep working, depletes battery.
To power off, I must press power button for 5 seconds.
I discovered this when I had no battery left the next morning, after a normal shutdown, and had to troubleshoot to find the root cause.
Every other function seems to be working.