Games often change some display settings in full-screen mode, but don't do
that in windowed mode.
They may change the resolution, but also other parameters of the
display that may interfere with their handling of it.
When the screens are in Duplicate mode, the changes propagate to both of them.
I believe that this is what is happening in your case.
Your switch apparently does not support
in a smart way, or the TV does not furnish any,
as otherwise the resolution change would have been automatic.
The solution would be using some product that allows easy switching between resolutions.
This will require an extra step (usually a click) when switching between the displays.
An example of such a ...
You can decrease both screen resolution and refresh rate while on battery. Though the actual number of physical pixels cannot be changed in an LCD, reducing resolution, in effect grouping pixels in blocks, should somewhat decrease GPU load, and setting lower refresh rate certainly decreases it. Also, viewing a comparatively static display rather than a ...
Not just the (maximum) CPU GHz (modern operating systems do step that down --if possible-- to conserve battery) and screen pixels (more the illumination behind the screen, and there it depends more on screen size than pixels --again, can be turned off/dimmed to save battery) consume energy (battery life). Need to count in disk, WiFi card, Bluetooth, ... ...
This answer is a repeat of the accepted answer above with a specific focus on Gnome and an explanation of how to find the device name. I was trying to connect a second screen to my laptop under Debian GNU/Linux 10 (buster) with the Gnome desktop. The recommended resolution for that screen is 1920x1200. The issue was that the resolution was lower and there ...
In Device Manager -> Display adapters, there were two identical drivers listed. I uninstalled the one that only had recent hardware changes/events recorded. After restarting my notebook, the native resolution had returned, and my device ran a lot smoother! The default graphics driver now appears under ‘Display adapters’.
It is somewhat better to scale N mid-sized videos and then stack them rather than to stack N larger videos into a very large canvas and then scale it down.
-y -i "v1.mp4" -i "v2.mp4" -i "v3.mp4" -i "v4.mp4" -i "v5.mp4" -i "v6.mp4" -i "v7.mp4" -i "v8.mp4" -i "v9.mp4" ^
Just wanted to add something I recently found out the hard way. I saw pin diagrams like the one you linked to above and assumed if a cable has 24 pins, it is dual link. Right? Not true. Those pins have to be connected to wires running through the cable.
The cable I bought was QVS brand, from Microcenter. After not being able to achieve 2560 x 1440 I went to ...
As venkat basically noted, make sure your client (VM) and host (your computer) have the same resolution.
As a user, I had not changed anything, so why did it all of a sudden happen?
Something HAD changed: My host computer rebooted.
Although I, personally, had not changed anything, my computer crashed (it ...
This is a little one-liner I came up to return the the resolution of the main display, that doesn't require any dependencies to be installed on macOS:
system_profiler -json SPDisplaysDataType 2>/dev/null | python -c "import sys,json;d=next(i for i in json.load(sys.stdin)['SPDisplaysDataType']['spdisplays_ndrvs'] if 'spdisplays_main' in i);print d['...
For digital monitors, using a higher resolution than the monitor can handle is safe, but the display might be blurry compared to using the physical native resolution, or it might not display anything at all, if it shuts down temporarily.
Old CRT displays could be damaged by using the incorrect display parameters, particularly scan rates (frequency).