[Bug 51157] GeForce GT 540M not working anymore

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

https://bugs.freedesktop.org/show_bug.cgi?id=51157

--- Comment #4 from Emil Velikov <emil.l.velikov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2012-07-01 06:06:20 PDT ---
Hi Diego

The errors in your logs could be related to the optimus solution on your laptop
- i.e. no displays physically connected to the nvidia card, thus causing Evo
issues. Have you tried booting in headless mode - "nouveau.modeset=2" in your
kernel command line ?

Due to further changes in nouveau, we refuse to load due to -EBUSY (nouveau:
probe of 0000:01:00.0 failed with error -16)
Would you mind narrowing down the issue - which kernel introduced it, can you
bisect


Ben

In the latter kernel 3.4(3.3 is affected as well) we fail to load, leaving one
of the following to blame

---
    ret = nouveau_fence_init(dev);
    if (ret)
        goto out_pm;

    if (dev_priv->eng[NVOBJ_ENGINE_GR]) {
        ret = nouveau_card_channel_init(dev);
        if (ret)
            goto out_fence;
    }

    if (dev->mode_config.num_crtc) {
        ret = nouveau_display_init(dev);
        if (ret)
            goto out_chan;

        nouveau_fbcon_init(dev);
    }

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