Watchdog: BUG: soft lockup - CPU#4 stuck for 22s!

My laptop is an Acer Aspire 3 a315-41g-r4bw. I tried to install Ubuntu-desktop 18.04 via usb. But it stucks for hours with following error code

Watchdog: BUG: soft lockup - CPU#4 

I cannot click or type anything!

How to stop this?

Hi I have exactly the same problem with my acer.

You can try the steps below:

1. Turn off the AMD settings on the 'Advanced' tab on the BIOS.
2. When installing ubuntu, highlight the 'install ubuntu' selection and press e.
3. Go to the line with 'linux' and at the end put space and add 'pci=noacpi'
4. Press F10 and the installation process will begin.

Hope it works out for you!