Created attachment 63118 [details]
dmesg from lts kernel

Created attachment 63119 [details]
vbios rom

I suspect this is actually yet more fallout from a kernel 3.4 ACPI bug actually... Nouveau in both logs has the same issues on your card, so it's unlikely to be the cause of the behaviour change.

This is the kernel bug: https://bugzilla.kernel.org/show_bug.cgi?id=43168

Different symptoms, but both problems can probably stem from ACPI video support not loading.

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);
	}

Do problems persist with the latest kernels (e.g. 3.11-rc7 at the time of writing)? If so, please attach a recent dmesg.

Thanks, it's working now with kernel 3.10.1.. I haven't tried with the latest but I will inform again if there's a regression.

(In reply to comment #5)
> Do problems persist with the latest kernels (e.g. 3.11-rc7 at the time of
> writing)? If so, please attach a recent dmesg.