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    SubjectRe: 2.6.29-rc1 does not resume on Lenove T61
    Date
    On Monday 12 January 2009, Zdenek Kabelac wrote:
    > 2009/1/12 Rafael J. Wysocki <rjw@sisk.pl>:
    > > On Monday 12 January 2009, Zdenek Kabelac wrote:
    > >> 2009/1/12 Rafael J. Wysocki <rjw@sisk.pl>:
    > >> > On Sunday 11 January 2009, Zdenek Kabelac wrote:
    > >> >> 2009/1/11 Maciej Rutecki <maciej.rutecki@gmail.com>:
    > >> >> > 2009/1/11 Zdenek Kabelac <zdenek.kabelac@gmail.com>:
    > >> >> >> Hi
    > >> >> >>
    > >> >> >> I've booted and tested 2.6.29-rc1 (c59765042f53a79a7a65585042ff463b69cb248c)
    > >> >> >>
    > >> >> >> I've observed that suspend is unusable - it goes to sleep - the sleep
    > >> >> >> LED is on. After few secs system turns on back itself - and stays in
    > >> >> >> some frozen state
    > >> >> >
    > >> >> > A have similar situation, one difference: I get blank screen during
    > >> >> > resume from suspend to ram. Also sometimes, like You, system turns on
    > >> >> > back itself.
    > >> >> >
    > >> >>
    > >> >> So it looks like reverting this commit:
    > >> >>
    > >> >> http://marc.info/?l=linux-kernel&m=123140019117968&w=4
    > >> >> (6fd9086a518d4f14213a32fe6c9ac17fabebbc1e)
    > >> >> (which is already a tracked regression)
    > >> >> fixes the problem with auto-resume
    > >> >>
    > >> >> But the problem with deadlock in the resume phase is still there.
    > >> >
    > >> > Please check if unloading all of the USB controller modules before suspend
    > >> > helps.
    > >>
    > >> I've booted to single mode without usbcore module (thus any load of
    > >> other usb modules fails)
    > >> (removed from initramdisk as well)
    > >>
    > >> This time the resume stops with these 3 lines (I'm using
    > >> no_console_suspend kernel option):
    > >>
    > >> ....
    > >> thinkpad_acpi thinkpad_acpi: EARLY resume
    > >> thinkpad_hwmon thinkpad_hwmon: EARLY resume
    > >> Enabling non-boot CPUs...
    > >
    > > So it seems we have broken CPU hotplug again.
    > >
    > > Does disabling/enabling CPU1 using
    > > /sys/devices/system/cpu/cpu1/online work?
    > >
    > > If it does, please boot with 'no_console_suspend' in the kernel command line,
    > > run:
    > >
    > > # echo core > /sys/power/pm_test
    > > # echo 8 > /proc/sys/kernel/printk
    > > # echo mem > /sys/power/state
    > >
    > > and see what happens (you need to have PM_DEBUG set in the kernel .config).
    > >
    > > Please send dmesg output generated right after the above (if it works).
    >
    >
    > I've taken from another Ingo's thread the idea to revert patch:
    >
    > 7503bfbae89eba07b46441a5d1594647f6b8ab7d
    >
    >
    > With this patch reverted and o/e/uhci_hcd & usbhid modules removed
    > before pm-suspend
    > (usbcore could be loaded, I've not trace which one of those usb
    > modules makes the problem)
    > my system resumes properl again.

    Sure, good idea. I've been running with this reverted recently.

    > PS: I'll do the above 'echo' trace later (being busy right now).

    That shouldn't be necessary if you can suspend-resume with
    7503bfbae89eba07b46441a5d1594647f6b8ab7d reverted and the USB controller
    modules unloaded.

    Instead, with 7503bfbae89eba07b46441a5d1594647f6b8ab7d reverted, please write
    'disabled' to the /sys/devices/.../power/wakeup files of all USB controllers
    and see if suspend-resume works in this configuration.

    Thanks,
    Rafael


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