This occured to me today, seemingly after no update for changes made to my laptop. I fixed in in the following way. Hope this helps someone...
What did not work: Running the latest update, installing kernel 4.8.x or 4.4.25, or any of the fixes you can find doing a google search for kubuntu 16.04 suspend. I had finally tried a commond line common pm-suspend, which caused the laptop to freeze and then freeze on booting.
I have dell vostro 3500 laptop.
What worked: I reinstalled the kubuntu 16.04.1 base. I have a separate /home partition so that was not effected by the reinstall (i didn't format it. just specified to mount /home in the install setup).
reinstall was fast. After install finished, I also ran the update... to kernel 4.4.0-62-generic. I did not test the suspend here. I installed powernap and cpufreq, then rebooted. Later I closed the lid and the computer suspended. All set and it works fine.
Not sure what was the exact problem was or the fix.
This occured to me today, seemingly after no update for changes made to my laptop. I fixed in in the following way. Hope this helps someone...
What did not work: Running the latest update, installing kernel 4.8.x or 4.4.25, or any of the fixes you can find doing a google search for kubuntu 16.04 suspend. I had finally tried a commond line common pm-suspend, which caused the laptop to freeze and then freeze on booting.
I have dell vostro 3500 laptop.
What worked: I reinstalled the kubuntu 16.04.1 base. I have a separate /home partition so that was not effected by the reinstall (i didn't format it. just specified to mount /home in the install setup).
reinstall was fast. After install finished, I also ran the update... to kernel 4.4.0-62-generic. I did not test the suspend here. I installed powernap and cpufreq, then rebooted. Later I closed the lid and the computer suspended. All set and it works fine.
Not sure what was the exact problem was or the fix.