Created attachment 8054 Power Manager Settings Distribution: Xubuntu 18.10 amd64 (clean install) xfce4-power-manager 1.6.1-1buid1 On xcfe4-power-manager, display is set to be "blank" after certain minutes of inactivity (see attachment). But after that certain times when laptops screen goes off, it doesn't turn back on again on mouse movement or key presses. PC remains full on but screen remains off. Happens on both battery and AC power.
This problem also happens when I manually lock the screen. Processor: Intel Core i3 3rd generation, Intel HD graphics Tested with 2 notebooks.
I have the same issue with 'Xfce Power Manager v1.6.1'. Here is the following behavior I experience: 1. Screen goes blank after defined time 2. Pressing keys and moving mouse doesn't exit the blank-mode. 3. There are two ways two exit the blank-mode: - Pressing Ctrl+Alt+Del brings me to my screensaver slock which then I can unlock - Switching the tty 4. After I leave the blank-mode using one of the two methods the monitor never turns blank afterwards (only after reboot the blank-mode works again) What is strange is also that when the screen is blank the applications which are open still receive all the keystrokes and events via mouse and keyboard. Additional information: OS Arch Linux No acpid installed
similar issue on Intel Core i3 3rd generation, Intel HD graphics. Rosa desktop fresh R10 distribution.Xfce Power Manager v1.6.1
GeForce GTX 1080 Ti, nvidia v415.18-4 => blanking works Intel i7 8700k, modesetting => blanking doesn't work Intel Core M-5Y31, modesetting => blanking doesn't work
Not a bug in xfce4-power-manager, but in Xorg 1.20 and/or the Intel driver code. Launchpad report: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1801609
@Theo: Thanks for the clarification and the link. Closing as invalid.
Workaround:- (Try this if you’re using Intel Graphics with an Intel SandyBridge (2nd generation) CPU or newer) Create an empty file anywhere using right-click menu. Name it "20-intel.conf" Open the file using any text editor (like Gedit, Mousepad etc.) and add the following lines (copy whole text, from the word "section" to "endselection" and paste into the text editor):- Section "Device" Identifier "Intel Graphics" Driver "intel" EndSection Now save the file. Now open your file manager with root privilege (sudo -i thunar for Xubuntu). Paste the file in /etc/X11/xorg.conf.d Create the requisite folders if they don’t exist. Restart the system after it’s done.