[Nouveau] [Bug 37669] [NVAC] problem when disabling external monitor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37669

--- Comment #1 from Antoine Reversat <a.reversat at gmail.com> 2011-12-06 11:44:37 PST ---
So I started looking deeper into this issue and it's probably somewhat
low-level as if I boot my computer into a console and load the nouveau driver
then unplug DP-1 the same flickering happens (but re-pluging the monitor on
DP-1 stops the flickering). I'll attach a demsg output with drm.debug=0x07
there's some interresting things specialy (I think) these lines :

checking generic (c0010000 640000) vs hw (c0000000 10000000)

and then 

Dec  6 10:55:25 antoine-MacBook kernel: [   15.878616] [drm] nouveau
0000:02:00.0: Register 0x00004028 not found in PLL limits table
Dec  6 10:55:25 antoine-MacBook kernel: [   15.878622] [drm] nouveau
0000:02:00.0: Register 0x00004008 not found in PLL limits table
Dec  6 10:55:25 antoine-MacBook kernel: [   15.878630] [drm] nouveau
0000:02:00.0: Register 0x00004030 not found in PLL limits table

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