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    SubjectRe: [REGRESSION,STABLE,BISECTED] Hang on resume from standby in 3.1.[56], 3.2-rc*
    I just went digging through the history, and it looks like the commit
    I found to be problematic partially reverts
    7c1e76897492d92b6a1c2d6892494d39ded9680c, from 2008.

    On Fri, Dec 23, 2011 at 11:31, Phil Miller <> wrote:
    > I've got a Dell Precision T1500 (lspci, dmidecode, and dmesg output at
    > ) that I generally
    > suspend when I'm out of the house or asleep, and wake up when I want
    > to use it. Sadly, a recent change to the kernel has disrupted that
    > happy state of affairs. When I run the most recent stable or
    > pre-release versions, the kernel hangs on resume. I can still switch
    > virtual consoles, and get keyboard output echoed to the screen, but no
    > userspace code seems to be running (e.g. login doesn't give me a
    > password prompt after entering a username), nor does the system
    > respond to ping or SSH connections.
    > Bisection between v3.1 and v3.1.6 points to the following commit as the culprit:
    > =====
    > commit aeed6baa702a285cf03b7dc4182ffc1a7f4e4ed6
    > Author: Thomas Gleixner <>
    > Date:   Fri Dec 2 16:02:45 2011 +0100
    >    clockevents: Set noop handler in clockevents_exchange_device()
    >    commit de28f25e8244c7353abed8de0c7792f5f883588c upstream.
    >    If a device is shutdown, then there might be a pending interrupt,
    >    which will be processed after we reenable interrupts, which causes the
    >    original handler to be run. If the old handler is the (broadcast)
    >    periodic handler the shutdown state might hang the kernel completely.
    >    Signed-off-by: Thomas Gleixner <>
    >    Signed-off-by: Greg Kroah-Hartman <>
    > :040000 040000 1cfa477e4be68746d7ef2818a430d50424b06572
    > ccd4ef67437a19acba03df2debac6eb8c5957b30 M      kernel
    > =====
    > I've tested that reverting this commit also restores my ability to
    > resume from suspend on 3.2-rc6.
    > If there's anything else I can do to help diagnose this issue or get
    > it fixed, I'm happy to help.
    > Thanks.
    > Phil
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