In the autumn and winter it's considered bad form to set power state to D3cold, it might cause the device to freeze to death. This is also the case in the other seasons, so any device in the southern hemisphere is affected too.
D3cold is not a valid state in a call to pci_set_power_state, only up to D3hot is allowed.
Signed-off-by: Maarten Lankhorst maarten.lankhorst@canonical.com --- diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index 89efeff..566e544 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -945,7 +945,7 @@ static int nouveau_pmops_runtime_suspend(struct device *dev) ret = nouveau_do_suspend(drm_dev); pci_save_state(pdev); pci_disable_device(pdev); - pci_set_power_state(pdev, PCI_D3cold); + pci_set_power_state(pdev, PCI_D3hot); drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF; return ret; }