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    SubjectRe: Suspend hangs since 2.6.34
    Date
    On Monday, June 21, 2010, Tino Keitel wrote:
    > Hi,
    >
    > this nasty bug did not appear after I enabled suspend debugging first,
    > but now it did:
    >
    > 2010-06-20_22:40:31.22927 kern.info: usbcore: deregistering interface driver dvb_usb_vp7045
    > 2010-06-20_22:40:31.24960 kern.debug: usb 1-6: __pm_runtime_resume()!
    > 2010-06-20_22:40:31.24968 kern.debug: usb 1-6: __pm_runtime_resume() returns 1!
    > 2010-06-20_22:40:31.24969 kern.debug: PM: Removing info for No Bus:dvb0.frontend0
    > 2010-06-20_22:40:31.24971 kern.debug: PM: Removing info for No Bus:dvb0.net0
    > 2010-06-20_22:40:31.24972 kern.debug: PM: Removing info for No Bus:dvb0.demux0
    > 2010-06-20_22:40:31.24973 kern.debug: PM: Removing info for No Bus:dvb0.dvr0
    > 2010-06-20_22:40:31.24974 kern.info: dvb-usb: Twinhan USB2.0 DVB-T receiver (TwinhanDTV Alpha/MagicBox II) successfully deinitialized and disconnected.
    > 2010-06-20_22:40:32.26675 kern.info: PM: Syncing filesystems ... done.
    > 2010-06-20_22:40:32.39011 kern.debug: PM: Preparing system for mem sleep
    >
    > When I killed the suspend script which hung at the echo mem >
    > /sys/power/state line, the computer suspended. After wakeup, the kernel
    > log lines after the line above look like this:
    >
    > 2010-06-20_22:49:10.28745 kern.warn: Freezing user space processes ... (elapsed 0.02 seconds) done.
    > 2010-06-20_22:49:10.28748 kern.warn: Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
    > 2010-06-20_22:49:10.28748 kern.debug: PM: Entering mem sleep
    > 2010-06-20_22:49:10.28749 kern.warn: Suspending console(s) (use no_console_suspend to debug)
    >
    > I also attached the full kernel log since the boot.

    Hmm. It looks like a USB problem, then.

    Alan, can you have a look at this, please?

    Rafael


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