I upgraded the Xubuntu on my Samsung laptop using the update utility and now the screen goes blank but does not turn off if I leave it idle on battery. I get the error "sleep verb not supported".
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1Possible duplicate of Hibernate – stumblebee Jan 25 '18 at 18:02
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I'm not concerned with hibernation. – Reza Jan 25 '18 at 19:30
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Where is the error "sleep verb not supported" coming from? logfile? command? – stumblebee Jan 25 '18 at 19:45
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It shows in a "balloon" on top right of the screen when I press a key and the (blank) screen saver goes away. – Reza Jan 25 '18 at 23:37
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Is secure boot enabled in the bios? What are the stats on "MEM" and "SWAP" when you run top -n 1 – stumblebee Jan 26 '18 at 16:53
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I have to check for the secure boot but here is the output of top. KiB Mem : 8087848 total, 3578944 free, 2607692 used, 1901212 buff/cache KiB Swap: 3124220 total, 3124220 free, 0 used. 4842824 avail Mem – Reza Jan 26 '18 at 20:36
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Swap does not appear to be enabled - "0 used". Try sudo swapon -a – stumblebee Jan 26 '18 at 20:56
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It's UUID was changed recently. I updated fstab and the corresponding line is now: UUID=887644a0-196a-4c34-9b73-373d93047cb0 none swap sw 0 0 – Reza Jan 26 '18 at 21:35
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Let us continue this discussion in chat. – stumblebee Jan 26 '18 at 21:48