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Until recently my laptop was suspending perfectly happily (i.e. when I closed the lid, it suspended; and when I opened it, it woke up). But since a recent update (kernel?), it now reboots instead.
I had a look in the journal, and I can see:
Sep 27 17:36:59 sony_vaio systemd[1]: Reached target Sleep.
Sep 27 17:36:59 sony_vaio systemd[1]: Starting Suspend...
Sep 27 17:36:59 sony_vaio systemd-sleep[31872]: Suspending system...
-- Reboot --
Any idea what might cause this? Or what I can do to investigate further?
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According to this (recommended) article: https://01.org/blogs/rzhang/2015/best-p … ate-issues
"Regressions are when suspend/hibernate used to work well, but fails after upgrading the kernel. In this case, the quickest and most efficient way to find the root cause and solve the problem is to use git bisect to find out which commit introduced the problem and then report the problem to the commit author/component owner"
which sounds a bit beyond my skill level
The kernel went from 4.7.2-1 -> 4.7.4-1, although I'm not 100% sure it was that round of updates that caused it to stop working.
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Have you checked your local package cache to see if the old kernel is there? If so, you can use "pacman -U <oldkernel>" and see if you can downgrade to test the issue. If it is related to a downgraded kernel, suspend starts to work again, THEN you can try to get help in bisecting the changes between the two.
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good idea. I'll try that, thanks
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I downgraded, and still have the same problem; so there goes that theory. I even went back to 4.7.1.1. I tried downgrading linux-firmware too.
I can't think what else might have changed that could cause this.
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Ah, this might be the same issue:
https://bbs.archlinux.org/viewtopic.php?id=217425
I don't like the solution though
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If I run systemctl suspend it has the same effect (reboot), so I don't see how it can be a gnome issue.
I found this: http://unix.stackexchange.com/questions … ry-power-s
but there's nothing similar in my BIOS options.
And this sounds similar: https://bbs.archlinux.org/viewtopic.php?id=214160
I might try draining the battery
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I actually seem to have acquired the opposite of the post above, my laptop will only suspend when not plugged in. Otherwise it reboots. Wyrd.
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