I can also confirm solved with a BIOS update.
Make sure to find the correct BIOS for your model number at Lenovo's
driver support website. If you have a Windows partition you can install
and use their GUI BIOS updater.
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Confirm fixed by the most recent BIOS update.
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1289797
Title:
[LENOVO 20A8A01DLM] suspend/resume failure
To manage notifications about this bug go to:
This has been found to be an issue with the BIOS firmware and will be
fixed in a future update:
http://linux-thinkpad.10952.n7.nabble.com/Gen-2-Haswell-X1-Carbon-
suspend-to-RAM-hang-td21039.html
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This issue appears to be an upstream bug, since you tested the latest
upstream kernel. Would it be possible for you to open an upstream bug
report[0]? That will allow the upstream Developers to examine the issue,
and may provide a quicker resolution to the bug.
Please follow the instructions on
'kernel-bug-exists-upstream'
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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https://bugs.launchpad.net/bugs/1289797
Title:
[LENOVO 20A8A01DLM] suspend/resume
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.14 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
It affects a non-essential hardware component (removable network card,
camera, web-cam, music player, sound card, power management feature,
printer...).
** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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Bugs,
