OT: xscreensaver doesn't work

[ToddAndMargo]

On 02/12/2018 12:03 AM, Silvio Knizek wrote:
> Am Sonntag, den 11.02.2018, 22:34 -0800 schrieb ToddAndMargo:
>> On 02/09/2018 02:59 PM, ToddAndMargo wrote:
>>> Hi All,
>>>
>>> Fedora 27, x64 installed from Fedora-Xfce-Live-x86_64-27-1.6.iso
>>> Xfce 4.12
>>> xscreensaver-gl-base-5.38-1.fc27.x86_64
>>> xscreensaver-5.38-1.fc27.x86_64
>>> xscreensaver-extras-base-5.38-1.fc27.x86_64
>>> xscreensaver-gl-extras-5.38-1.fc27.x86_64
>>> xfce4-screenshooter-plugin-1.8.2-9.fc27.x86_64
>>> xscreensaver-base-5.38-1.fc27.x86_64
>>> xscreensaver-extras-5.38-1.fc27.x86_64
>>> xfce4-screenshooter-1.8.2-9.fc27.x86_64
>>>
>>> I can fire up Screen Saver preference, I can preview my screen
>>> saver, I
>>> set it for five minutes, no screen saver. HOW CAN I LIVE WITHOUT
>>> MY
>>> BOUNCING COWS!!???
>>>
>>> How do I get my screen saver to work. It does work on
>>> other machines running Xfce and Fedora 26.
>>>
>>> Many thanks,
>>> -T
>>
>> Turning off xfce4-power-manager's "presentation mode" fixed
>> the issue
> 
> Hi,
> 
> the »Presentation Mode« is exactly for this, preventing the
> screensaver, avoiding auto shutdown and brightness reducing, so your
> presentation can run uninterrupted.
> You get what you wanted.
> 
> BR
> Silvio

What presentation?  Nothing is different on my screen with it on or off.
And, I also run "Red Shift", which also doesn't care if "presentation
mode" is enabled or not.