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SubjectRe: 4.13 breaks suspend to ram wakeup
Hi Norbert,

from what I can tell 4.13 is really, really stable at resuming from suspend. I would say the most reliable kernel for a long time on my ThinkPad (P50, using nouveau).

Do you use blk-mq? There's a discussion regarding stalled io...

P.S: sent from mobile, might be short.

Am 20. September 2017 16:36:56 MESZ schrieb Norbert Preining <>:
>(please Cc)
>I recently upgraded my Lenovo X260 from 4.12 to 4.13 and with the very
>same software (Debian/sid) 4.13 does not properly wake up from
>suspend to ram.
>It wakes up, shows X very quickly, but it seems that the hard disk is
>sleeping and not reacting. I can move the mouse, but the unlock screen
>is not shown.
>Switching to the console I can enter the user name, but then I am
>for the prompt indefinitely.
>Callng Sysrq-s to sync the disks never returns that the sync completed.
>Waiting long enough it completely freezes and only Sysrq-b helps.
>I have tried to capture any output, but due to the circumstances
>described, nothing can be saved to persist.
>I am happy to provide details if someone explains me how to grab them
>(sorry, no serial console!), or test patches/suggestions with the
>please Cc.
>Accelia Inc. + JAIST + TeX Live + Debian Developer
>GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13

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