Q:

"He's dead, Jim!" each 5 minutes in Chromium

Please tell what happened, this didn't happened when I had Debian 

Actually, I have 512MB RAM so I changed my swappiness to 90% is this because of that?
EDIT: CHANGED BACK TO 60% BUT NOTHING HAPPENED, SAME PROBLEM

A:

Try reseting your profile:

Exit chromium completely.

Go to Computer.

Select Go > Location.

Enter the following directory in the text field:
 ~/.config/google-chrome/

Locate the folder called "Default" in the directory window that opens and rename it as "Backup default."

Try opening Google Chrome again. A new "Default" folder is automatically created as you start using the browser.

If you wish, you can transfer information from your old user profile to your new one.
However, this action is not recommended, since a part of your old profile may be corrupt.
With that in mind, to transfer your old bookmarks, copy the Bookmarks.bak file from the Backup default folder to your new Default folder. Once moved, rename the file from Bookmarks.bak to Bookmarks to complete the migration.
All other browser data will remain in the Backup default folder, but you won't be able to transfer it to your new profile.

A:

actually, i have 512 mb ram so i changed my swappiness to 90% is this because of that?

You need more RAM. Chrome can exhaust memory pretty quick, if you don't have available the child's dies and you get the "He's dead Jim!" screen. Also, a 60% of swappiness should be fine, there is actually no need to change the swappiness unless you have process that merit that action.
Change the swappiness back, add more memory and clear your cache and cookies. That should solve your problem.
(if it works in a live system, you should consider what are the differences between each, like programs opened, configurations that are not defaults, etc.)

