[Bug 91618] New: [Regression, bisected] System hang during hibernation on EeePC 1015PE

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Aug 12 10:02:06 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=91618

            Bug ID: 91618
           Summary: [Regression, bisected] System hang during hibernation
                    on EeePC 1015PE
           Product: DRI
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: eugene.shatokhin at rosalab.ru
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

On ASUS EeePC 1015PE with the kernel 3.18 and newer (at least up to 4.2-rc6
inclusive), there is a problem very similar to the one fixed for Lenovo by the
following commit in the mainline kernel:

   commit ab3be73fa7b43f4c3648ce29b5fd649ea54d3adb
   drm/i915: gen4: work around hang during hibernation

The laptop has Atom CPU N455 and an integrated graphics controller (PCI ID:
8086-a011-1043-83ac) managed by i915 module.

When I try to put the system to hibernation, the hibernation image is created,
the screen turns off but the laptop does not turn off after that (the fan
continues to work, the leds are on, etc.) and the system seems to hang.

Bisection of the mainline git tree pointed to the same "bad" commit as it was
for Lenovo:

   commit da2bc1b9db3351addd293e5b82757efe1f77ed1d
   drm/i915: add poweroff_late handler

If I revert that change, hibernation works well. 

Detailed information about the hardware, as well as dmidecode, logs and other
data is available here: http://hw.rosalinux.ru/index.php?probe=1c0329fde5

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