It took me few days to figure out how to install Ubuntu on my Lenovo machine. I went through a series of issues before actually installing Ubuntu and getting things into working mode.
1. The boot issue.
The first issue was that after installing my first OS Windows 8.1 I was unable to move into UIEF boot menu. Even in trouble shooting mode I was unable to see UIEF menu. The reason was I disabled secure boot in BIOS in the first place prior to making the installation.
2. The boot to BIOS issue.
My bad ? I didn’t read the manual completely. I had to power off the machine then press recovery key to boot into BIOS. Before I figure out that I wiped my HDD accidently via diskpart in recovery mode. Lesson learned – Read before wipe.
3. The Wifi Driver\LCD Backlight issue.
After first boot from USB, the screen went blank. I tried different versions Ubuntu, Linux Mint but nothing happened. Little bit of Googling said modify the grub scripts etc. I didn’t fall for that.. After first install I connected my Laptop to my TV as PC. Boom I was able to perform installation. Later I figured out that I had to press backlight + button(F11+Fun) to increase brightness from zero. Then came Wifi issue. Ubuntu was unable to detect additional drivers. The fix was to USB Tether my android and then do a sudp apt-get update. Now wifi (Brodcom) drivers were listed and I was able to install it.
I write down these things here so that anyone who get stuck at some point can use this article to resolve the issue.