[NVAC] Flickering screen on 1920x1080 monitor with 9400M in MacbookPro 5,5

Submitted by Nils Alex

Assigned to Nouveau Project

Link to original bug (#88272)

Description

Created attachment 112063
dmesg without drm.debug

I'm using nouveau from the git kernel to drive the GeForce 9400M, the only graphics adapter in my MacbookPro 5,5.

My Dell U2312HM monitor (1920x1080@60, attached via DisplayPort -> DisplayPort cable) won't show a static picture, moving pictures make the flickering even worse. The problem still stands in the highest pstate level and with only the DisplayPort as active output. I also tried a DisplayPort -> VGA adapter and got the same result.

Included two dmesg:

1. Without drm.debug
   
2. With drm.debug=0xf, flooded
   

**Attachment 112063**, "dmesg without drm.debug":
file_88272.txt