Comment # 4 on bug 98582 from Pierre Moreau

Support for GM108 chipsets was merged in Linux 4.7, which was released end of
July 2016, so I assume that it worked before as Nouveau failed to recognise the
chipset, and therefore did nothing.

Trying Linux 4.7 and making sure that the chipset is recognised would be nice,
to rule out a possible regression. Could you also please add the output of
acpidump to the bug report?