The touchscreen digitizer on my Lenovo A820 was broken so I bought a new one and installed it. Removal was a bit difficult since my touchscreen had many cracks. Anyways, I managed to replace it with the new one without any issues. But it's not responding at all! All the physical buttons work but the touchscreen just doesn't respond. What do I do now? Is this a kernel issue? I use a modified ROM. Please help me guys. I never thought things would go this way.