Public bug reported:

Since a few weeks update-manager seems to get stuck during the update
process and overheating my laptop.

The update window shows me the message "downloading from
de.archive.ubuntu.com" and the bar is full. My cpu is running at 100% on
all cores. The gnome system monitor shows me only 25% usage, but that
cant be true because the fan is running on full speed. The systems
monitor seems to be stuck too. Likely due to the high cpu usage of the
update manager. Once I quit the update process the cpu usage for the
process jumps up to 100% for a second before it is gone from the list.

I have to shut down the process manually before emergency shutdown (goes
way beyond 80 degrees celcius) Once I force update-manager to shut down
my temps go down again and the fan slows down too. Everything is back to
normal.

The odd thing is when using synaptic to update my packages everything is
fine. I started having this problem a while back, but then after the
update worked once I thought it was gone.

System: Lenovo X201, Ubuntu 13.04 (Unity)

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

- Since a few weeks update-manager seems to get stuck during the update process 
and overheating my laptop.
-  
+ Since a few weeks update-manager seems to get stuck during the update
+ process and overheating my laptop.
+ 
  The update window shows me the message "downloading from 
de.archive.ubuntu.com" and the bar is full. My cpu is running at 100% on all 
cores. The process monitor shows me only 25%, but that should be no problem for 
the fan since it is running on full speed. The systems view seems to be kinda 
stuck to because once I quit the process the cpu usage for the process jumps up 
to 100% for a second before it is gone from the list.
- My systems temerature rises steadily. I have to shut down the process 
manually before emergency shutdown (goes way beyond 8ß degrees celcius) Once I 
force update-manager to shut down my temps go down again and the fan slows down 
too. Everything is back to normal.
+ My systems temperature rises steadily. I have to shut down the process 
manually before emergency shutdown (goes way beyond 80 degrees celcius) Once I 
force update-manager to shut down my temps go down again and the fan slows down 
too. Everything is back to normal.
  
  The odd thing is when using synaptic to update my packages everything is
  fine. I started having this problem a while back, but then after the
  update worked once I thought it was gone.
  
  System: Lenovo X201, Ubuntu 13.04

** Description changed:

  Since a few weeks update-manager seems to get stuck during the update
  process and overheating my laptop.
  
- The update window shows me the message "downloading from 
de.archive.ubuntu.com" and the bar is full. My cpu is running at 100% on all 
cores. The process monitor shows me only 25%, but that should be no problem for 
the fan since it is running on full speed. The systems view seems to be kinda 
stuck to because once I quit the process the cpu usage for the process jumps up 
to 100% for a second before it is gone from the list.
- My systems temperature rises steadily. I have to shut down the process 
manually before emergency shutdown (goes way beyond 80 degrees celcius) Once I 
force update-manager to shut down my temps go down again and the fan slows down 
too. Everything is back to normal.
+ The update window shows me the message "downloading from
+ de.archive.ubuntu.com" and the bar is full. My cpu is running at 100% on
+ all cores. The gnome system monitor shows me only 25% usage, but that
+ cant be true because the fan is running on full speed. The systems
+ monitor seems to be stuck too. Likely due to the high cpu usage of the
+ update manager. Once I quit the update process the cpu usage for the
+ process jumps up to 100% for a second before it is gone from the list.
+ 
+ I have to shut down the process manually before emergency shutdown (goes
+ way beyond 80 degrees celcius) Once I force update-manager to shut down
+ my temps go down again and the fan slows down too. Everything is back to
+ normal.
  
  The odd thing is when using synaptic to update my packages everything is
  fine. I started having this problem a while back, but then after the
  update worked once I thought it was gone.
  
- System: Lenovo X201, Ubuntu 13.04
+ System: Lenovo X201, Ubuntu 13.04 (Unity)

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https://bugs.launchpad.net/bugs/1199785

Title:
  update-manager puts cpu usage to 100%. Overheating laptop (lenovo
  x201)

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