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    SubjectRe: laptop reboots right after hibernation
    Tomas Carnecky wrote:
    > Pavel Machek wrote:
    >> Hi!
    >>
    >>> echo disk > /sys/power/state
    >>>
    >>> successfully saves that state to the disk, but just as the laptop is
    >>> about to turn itself off, it reboots (successfully, so the
    >>> hibernation/resume process works well, even with X running! which is
    >>> awesome :) ). But I'd rather like the computer turned off after I
    >>> hibernate it. Where could the problem be?
    >>>
    >>> It's a new laptop, TP X61 tablet, I tried ubuntu (7.10, gutsy) for a few
    >>> days, both suspend and hibernate worked there (with one or two crashes,
    >>> probably due to X, I've read that the intel driver got some
    >>> suspend/resume improvements recently). Now I'm running gentoo, kernel
    >>> 2.6.24-rc2. I'm using newer versions of almost all software now compared
    >>> to the ubuntu system.
    >> If it works in older ubuntu, you can probably do bisect. Does normal
    >> shutdown work? You can try platform vs. shutdown mode...
    >>
    >
    > I don't have ubuntu anymore, though I'll try if hibernate works with the
    > livecd. One interesting thing I've found out: hibernate reboots the
    > laptop _only_ if it is in the docking station. If I hibernate while
    > outside of the docking station, it properly shuts down the laptop.
    >
    > The default mode seems to be 'platform', after I echoed 'shutdown' to
    > /sys/power/disk the notebook correctly shuts down after hibernation!
    >
    > Some interesting facts. All tests were done with 2.6.24-rc2, custom
    > tailored kernel with just the options needed for my notebook (ThinkPad
    > X61 Tablet) - without drm modules and bluetooth but with iwl4965 loaded.
    > All tests were done without X running, from the console. If I say
    > something 'works' it means I tested it at least three/four times in a
    > row (if not even more).
    >
    > (1) Both STR and STD work correctly if I keep the notebook outside of
    > the docking station (both in platform and shutdown mode).
    >
    > (2) Both STR and STD work correctly if I keep the notebook in the
    > docking station (both in platform and shutdown mode - with the small
    > glitch in platform mode that the notebook won't power off after
    > hibernation).
    >
    > (3) Once the notebook was in the docking station (whether I boot it
    > while in the dock or boot it outside and then put it into the dock) and
    > I take it out (press the 'undock' button on the dock, wait for the green
    > led, then take out the notebook) things get interesting:
    >
    > (a) I initiate STR, notebook correctly goes to sleep, but it only wakes
    > up if I have it in the docking station. If I try to wake it up outside
    > of the docking station it will fail.

    That fails with a non-blinking cursor in the top left screen, just like
    in point 3b.

    >
    > (b) I initiate STD, and it locks up after a few seconds, at that time
    > only the cursor in the top left screen is visible (not blinking). If I
    > put the notebook in its locked up state into the dock, it will reboot
    > after a few seconds.
    >
    > (4) If the notebook is in the dock and I initiate STR and then press the
    > undock button, it resumes (I assume that is 'working as intended').
    >
    > (5) If the notebook is in the dock, I press the undock button and wait
    > for the green led then initiate STR, I can take the notebook out but
    > resuming doesn't work - unless I resume it while the notebook is back in
    > the docking station (see point 3a)
    >
    > (6) If the notebook is in the dock, I press the undock button and wait
    > for the green led, then initiate STD:
    >
    > (a) in platform mode: I can take the notebook out but resuming doesn't
    > work - unless I resume it while the notebook is back in the docking
    > station (contrary to point 3b). It seems as the notebook 'locks' itself
    > into the docking station during STD, I see the green led change into red
    > during the hibernation process (just before heavy HD activity starts).
    >
    > (b) in shutdown mode: STD fails with a completely black screen, not even
    > the cursor is visible.
    >
    > There doesn't seem to be a difference between platform and shutdown mode
    > other than the reboot glitch when the laptop is in the docking station
    > or as described in point 6.
    >
    > tom

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