This bug also affects the Dell XPS 13 9370.
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https://bugs.launchpad.net/bugs/1774950
Title:
Suspend fails in Ubuntu and Kubuntu 18.04 but works fine in Ubuntu and
Kubuntu
I'm also experiencing intermittent failures after suspend/resume with
X220 i7. I experienced the suspend problems first with 12.04, and
recently tried the 14.04 Live CD, and experienced them there as well.
I appear to have better luck with a HDD than an SDD in it, but that may
be coincidental.
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This Ubuntu 12.04 X220 user suggested in a fix that involves ACPI
configuration rather than a kernel change that you might try:
http://fstyle.de/hp_fstyle/wordpress/2012/08/10/ubuntu-12-04-acpi/
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Here's my latest test result, using:
- X220 i7
- Samsung 840 Pro SSD
- BIOS 1.39
- Ubuntu 12.04.3
- Kernel 3.8.0-33
Using "sudo pm-suspend", the first cycle completes normally.
On the second cycle, I see an "Unable to dock!" message as it's suspending. It
resumes to show a black sc
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