[Nouveau] [Bug 40548] Displayport not working on NV50

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40548

--- Comment #10 from Emil Velikov <emil.l.velikov at gmail.com> 2011-09-05 12:54:27 PDT ---
By bad forgot the Optimus link [1]

Whereas for the two GPU/cards I got this from your dmesg


[    0.807677] [drm] radeon defaulting to kernel modesetting.
[    0.807678] [drm] radeon kernel modesetting enabled.



[    2.141658] MXM: GUID detected in BIOS
[    2.141736] nouveau 0000:01:00.0: power state changed by ACPI to D0
[    2.141741] nouveau 0000:01:00.0: power state changed by ACPI to D0
[    2.141753] nouveau 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    2.141759] nouveau 0000:01:00.0: setting latency timer to 64
[    2.144701] [drm] nouveau 0000:01:00.0: Detected an NV50 generation card
(0x0a5e00a2)

Can you attach the output of lspci just to confirm/dismiss the above


You can try the following 
1. Append "video=LVDS-1:d" to your kernel command line to disable the LVDS
2. Choose a lower resolution for your DP monitor - "video=DP-1:1024x768 at 60"

Cheers
Emil


[1] http://nouveau.freedesktop.org/wiki/Optimus

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