I get sound but no images/graphics on Minecraft 1.7.10 on Ubuntu?

I downloaded Minecraft 1.7.10 on Ubuntu 64 bit platform for my son. I was told double click on Minecraft.jar in order to start the program however executable bit was missing and when I double clicked on it, the file opened up displaying folders and files. It was more like a zip file instead of executable file I expected.

I tried the command java -jar Minecraft.jar instead at command line after adding x bit on it. The program started fine, however in the end I can only hear sound but no images whatsoever. Has anyone come across this before? I wonder what I did wrong. I'd appreciate your help on this.

[update]

I ran into an article saying that go to properties of minecraft.jar and check on allow executing file as program under permissions and make sure open with OpenJDK instead of archive manager. Now I don't have to run java command. However that didn't fix no images problem. I wonder if I need to replace graphics card and get appropriate driver...the laptop I use is 5 years old HP Pavilion dv7-1245dx.