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The observation "it only turns the screen off for a small moment and immediately turns it on" suggests that it tries to hibernate, but is unsuccessful. The same thing happened with me due to some wake up event created by device. Check the output of dmesg to find any logs related to pm. You can use this command to filter pm errors: dmesg | tail -200 | grep ...


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Killing the process light-locker (discovered by using xwininfo) helped us temporarily, then uninstalling light-locker with dpkg --purge light-locker light-locker-settings fixed it more permanently. We are using Gnome 3, so this might not be a solution for everybody. (In general, there's probably a process displaying a black screen that you need to kill; ...


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Some device is waking up your machine immediately. You can show all devices which can wakeup and those states with cat /proc/acpi/wakeup # cat /proc/acpi/wakeup Device S-state Status Sysfs node PS2K S4 *disabled PS2M S4 *disabled UAR1 S4 *disabled pnp:00:06 P0P1 S4 *disabled RP01 S4 *disabled pci:0000:00:1c.0 ...


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As far as I know hibernation is disabled in Ubuntu 14.04. Follow these steps to enable it: Type the below command in your terminal: sudo -H gedit /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla Fill the file with the following lines: [Re-enable hibernate by default] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ...


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I had a similar problem after upgrading from 14.10 to 15.04. I have a carbon X1, but it also uses iwlwifi. I fixed the problem by turning off bluetooth with rfkill. The page for the iwlwifi driver suggests that running wifi & bluetooth at the same time is difficult. I note that the script reports that your bluetooth is at least enabled. There's some ...


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Try disabling hibernation completely by running powercfg /h off as administrator in windows. Happy that this solved the issue for you!


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I have the same problem, and what I do is to "reboot" windows, and then choose ubuntu from the grub menu. Then I can mount windows partitions with no problem. My theory is that windows hibernates when you choose "shut down". Another one of those misleading/lying windows actions. Now I just never "shut down" windows, I always reboot into a linux distro, and ...


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Simply add a file to /etc/pm/sleep.d In this file do you checks if suspend should be allowed. If not just exit with exit 1. For example: tmp_start=... tmp_stop=... if [ $((tmp_stop)) -gt $((current_date)) -a $((tmp_start)) -lt $((current_date)) ]; then logger $0: Currently RECORDING. No Suspend! exit 1; fi


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Create the following file: /etc/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla Copy / paste the following content into it: [Enable hibernate by default in upower] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes [Enable hibernate by default in logind] Identity=unix-user:* ...


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I was having the same problem. sudo pm-hibernate ...nothing. >~$ dbus-send --system --print-reply --dest="org.freedesktop.UPower" /org/freedesktop/UPower org.freedesktop.UPower.Hibernate > method return sender=:1.44 -> dest=:1.303 reply_serial=2 ...nothing. Looking around, I found a suggestion to check the pm-hibernate log: >~$ head ...


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I'm seeing the same problem on my Sony Vaio. Once I manage to get logged into the Lubuntu desktop, it stops suspending every 30 seconds. I think this is because xfce4-power-manager is taking over. However, if I switch to a console, it immediately suspends, and resumes its "suspend after 30 seconds" behavior. I also see the "suspends after 30 seconds" ...


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Try to deactivate then reactivate only the wireless connection as described here : https://help.ubuntu.com/stable/ubuntu-help/power-nowireless.html If you want to do it via commands, instead of restarting networking try restarting network-manager. I get the same trouble as you on 15.04 (appears after upgrading) on a macbookpro10,1.



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