Created attachment 339223 [details] failed shutdown sequence 1 Description of problem: Pressed the power button. When the "shutdown this system now" dialog appeared I selected Shutdown. The machine started to shutdown, the screen went black, I shut the lid and put the laptop in a bag. A few hours later when I got it out of the bag, I found that it was EXTREMELY HOT. I opened it up and found that it had gotten stuck during the shutdown, see 1.jpg. I then hit ctrl+alt+del which then caused the shutdown to continue one more step, but then get stuck again, see 2.jpg. Again I hit ctrl+alt+del and the shutdown continued, see 3.jpg, and ultimately powered off. I consider this to be a very serious issue. It has potential to damage hardware. Would it be possible to have a kernel based watchdog timer shut the power off if things go wrong?
Created attachment 339224 [details] failed shutdown sequence 2
Created attachment 339225 [details] failed shutdown sequence 3
I believe this is a duplicate of an already reported bug. *** This bug has been marked as a duplicate of bug 495326 ***