My Laptop is Samsung NP300E4V and I have loaded Ubuntu 13.04 to it and the below screenshot happens randomly to my laptop.
I was working on Eclipse when the latest freeze occurred. I was able to restart the system by holding Alt + PrtSc + REISUB technique. I have also experienced a crash in which I was not able to REISUB the system. In that case, the screen developed a mosaic like pattern and was scarier than this.
I am new to Linux. Guide me.
Edit: I am using 64 bit version