After becoming Thane of Whiterun once through the Main Quest, this has to be redone when siding with the Stormcloaks in the War. The relevant quest is this one
This Quest is not available to me. Vignar is on his throne, I already purchased Breezehome from his steward. The war is over. The option to start the quest just doesn't exist. And I checked that I am not already Thane with the guards.
I tried every console command I could find, e.g.
completequest. Nothing worked. I tried raising the relationship rank with Vignar. I tried disabling/enabling Vignar. The quest is still not available. This is currently making me not want to play anymore as the goal I set myself to keep playing was becoming Thane in every Hold, which now is impossible.
Does anybody know of other things I could attempt to get this quest started?