No trim and can't shift into small chainring I have the dura ace 7900 front shifter and derailleur and after my shifting cables have been replaced I have noticed the following.

I cannot trim anymore. The chain jumps onto the big chainring with only 1 click. Previously I could shift into the big ring with 2 clicks.

I cannot shift into the small ring. Well I can but the chain stays on the big ring while I pedal. Only after I turn the cranks for a while the chain drops into the small ring.

I can rule out worn cables and housing since those were replaced right as this problem came up.

I have tried adjusting the cable tension with the barrel adjuster but that yielded no results.

Any ideas ?
Sounds like you have a bit too much cable tension in your new configuration.

Usually cable tension is tuned with the barrel adjuster you mentioned, but if you cannot get the tension low enough with it, you'll need to loosen the bolt that attaches the cable to the derailleur, give the cable just a bit more slack and try again.