I recently purchased the new XPS 13 (4K TS, i7, 16GB RAM, 500GB SSD) and have been experiencing issues with the screen flickering when plugged in to AC. I thought it may have been a driver issue so downloaded the latest graphics drivers but this has not fixed the issue. When running on battery everything is fine. I have disabled the dynamic backlight in BIOS and checked Event Viewer but no such luck.
I had a slightly different problem. Occasional flashes or flickers regardless of whether on power or not. Dell replaced the display on my computer but this did not fix it. Your suggestion of disabling Panel Self-Refresh (PSR) did. Thank you very much.
I just disabled this feature. Going to see if it solved the problem. My machine was certainly not under a lot of stress and I would get random flickering on my screen. I hope this really does work, since I just purchased this little laptop. Will keep you posted.
Search for Intel Graphics Control Panel
When it opens click the Power icon
Under change settings for the plan, change Panel Self Refresh to Disabled
Can't remember if you need to restart or not.