The clock thing is normal. Windows doesn't like UTC clocks with local adjustment for timezone like every sane system does it.

About the resolution issue. Did you deactivate fast boot in Windows. That's a bullshit feature decreasing boot time by not actually shutting off. It's some kind of hybrid standby. And it can lead to all kinds of problems, like for example not properly shutting down and releasing control over hardware. Which then leads to stuff like graphics or network cards not working properly in linux.