I have a live usb of Deepin 15.4.1 that I made using the Deepin Boot Maker. I'm using an hp laptop that is a couple of years old and it satisfies all of the system requirements for this distro.

My problem is that I can't change the brightness of the screen at all in the live session. It starts off with the max brightness setting, I can't change this setting using the brightness keys on my keyboard, and even though I can move the brightness slider back and forth in the settings menu, it doesn't actually change the brightness at all. When I go back to that particular brightness slider it's back to where it was before at the highest setting.

Another problem that I have is that once I put the pc in suspend mode, I can't get out of it. When a press a key on the keyboard it plays a sound effect, but the screen remains black. I don't know if this has anything to do with the brightness problem, but I just thought it might be helpful in pin-pointing the issue.

Any help will be greatly appreciated, thanks in advance.