Created attachment 179181 [details] 4.0.x-fix-Acer-Gen5-hibernation.patch Hello. Recently a regression was introduced, which prevents my laptop from successfully hibernating. Other users are also affected. The problem is described in details here [0] and here [1]. This problem was later fixed via workaround as described here [2]. Unfortunately this workaround does not cover my hardware, which is Acer laptop with Gen5 chip. I've created a patch to make the said fix work on my machine as well and can confirm that it works without any problems on 4.0.x kernels. On the other hand without this patch my machine is stuck during hibernation. Please add this patch to the mainline kernel. [0]: http://lists.freedesktop.org/archives/intel-gfx/2015-February/060633.html [1]: https://bugzilla.kernel.org/show_bug.cgi?id=94241#c0 [2]: http://patchwork.freedesktop.org/patch/43731/
Created attachment 179191 [details] lspci -vvv -nn -k
+Imre
Presumed fixed by commit 54875571bbfde00fc63741715c531cbb5246c3b2 Author: Imre Deak <imre.deak@intel.com> Date: Tue Jun 30 17:06:47 2015 +0300 drm/i915: apply the PCI_D0/D3 hibernation workaround everywhere on pre GEN6 If the problem persists with that commit, please file a bug at the freedesktop.org bugzilla [1], referencing this bug. Thank you. [1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel