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...ter Wu <peter at lekensteyn.nl> --- Created attachment 127942 --> https://bugs.freedesktop.org/attachment.cgi?id=127942&action=edit Disable d3cold on bridge when falling back to _DSM The workaround patch has been merged in v4.9-rc3-34-gb0a6af8 (and backported to 4.8.7 via v4.8.6-109-g7290da4) but apparently it broke (system?) suspend/resume according to the reporter. Before the workaround patch: - _PR3 method is found, so nouveau assumes that PCI core takes care of D3cold. - Due to an ACPICA bug, PCI core fails to power off the device via runtime PM: https://bugs.acpica.org/show_...