When I switch on my laptop, it boots and goes into blinking stage. Keyboard and mouse work.
After do a force shutdown using power button and boot again, this problem is gone and it boots normally.
I did boot-repair and it didn't help me either. Or is this a common bug in 18.04
Any suggestions about installing
ubuntu-desktop again as suggested here?
I did a version upgrade from Ubuntu 16.04 to 18.04. My Laptop is hp with AMD-A6 and Readon-R4 graphics.