Created attachment 139554 [details]
I'm no more able to use nouveau on system with GeForce 320M MCP89.
X server fails start.
This happened when I upgraded my ubuntu from 17.10 (works good) to 18.04.
Ubuntu 18.04 live CD has same issue.
Please see kernel.log
Anoher log when I tried to start with 4.15 and 4.13 after ubuntu 17.10 upgrade to 18.04:
Created attachment 139555 [details]
A brief check reveals that mcp89's mmu is hooked up to g84_mmu and not mcp77_mmu. No clue if that's on purpose or not.
Created attachment 140478 [details]
mind trying that patch and see if that's better?
Provided patch fixed the regression.
it is still an issue