I am at the point in MQ where I am to sacrifice one daedric artifact to Martin and was on my way to collect my weekly income from Thieves Den when I remembered I can get an extra Sigil Stone from the Oblivion Gate near Fort Sutch. I arrived there and there are no soldiers, no daedra, no Oblivion Gate! I have closed only one Oblivion Gate so far, the Kvatch one and have discovered about 4 or 6 of them. UESP says the gate will open once the Dagon Shrine quest is complete and I have completed another quest after completing the Dagon Shrine quest, so where is the problem here? I tried to reload a save game, leave the area and reentering it, going into nearby Bleak Mine and head back, quicktraveling and so on but there is still no gate near Forth Sutch. I clearly remember there was a gate there in my previous games and I do not use any mods that might affect anything that's related to the Oblivion Gates. The only mod I use is Toggleable Quantity Prompt which deals with Mercantile and I also have the unofficial patches for Oblivion, SI and the DLCs.
Is there some logical solution here or some way to force the gate to open? I know there are console commands http://www.uesp.net/wiki/Oblivion:Oblivion_Gates#Console_Commands to force the gates to open but will it trigger this non-journal quest to "start"?

It's not enough to leave the area and then return.

The cell needs to reset.

So I recommend leaving the area, and go someplace far away (like fast travel to Leyawiin or Cheydinhal). Then wait for more than three days (a week should be very safe) then return to Anvil and run up to Ft Such.

Thanks, I thought that the gates spawn only when you leave and enter the cell.
And I solved the issue with the console command, setstage MS94 40 made the gate and soldiers appear. Then everything went well and I was able to close it and the captain thanked me.