[Bug 99661] New: [PATCH] Failure to poweroff after hibernation on Acer Aspire 1830T laptop with Ironlake chip

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=99661

            Bug ID: 99661
           Summary: [PATCH] Failure to poweroff after hibernation on Acer
                    Aspire 1830T laptop with Ironlake chip
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.0.x
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: itumaykin at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 179181
  --> https://bugzilla.kernel.org/attachment.cgi?id=179181&action=edit
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/

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