Here is another free professional based software that can be used to validate calibrations that may be easier to use than display cal just for validation.
The spectracal report software is the same software that Linus uses when he does monitor reviews and tests the display’s default color accuracy. I don’t think the free one lets you actually calibrate the monitor though, you can continue using the spyder software or start using displaycal, which is much more full featured and will give you more accurate results as it can adjust more settings than the base Spyder software.
@wendell Just took a look at the report.
The monitor is 100% sRGB. That is perfectly fine for general use. Web browsers will display untagged photographs in the sRGB color space and is the default color space for PCs and the internet. Great for gaming and general office tasks.
Luminance is dependent on the environment that you are working in. 90 is ok if you are working in a dim room without outside windows or if you use the monitor at night time. 120 is about right in a room that is open and well lit but without direct sunlight shining on the monitor. Examples being an open room with lots of daylight. You may need 160 in a bright studio with lots of bright camera lights. Rule of thumb is If you need sunglasses to look at the monitor it then you have it set too high. I do not know if the base spyder software allows you to manually set the luminance setting you want to use.
The Gamma is set to a level of about 2.0. Windows and Linux default is 2.2 and will make the monitor appear to have more contrast. Old Macs used to use a gamma of 1.8 and that looks more washed out.
The default brightness setting may be set too high for the software to adjust accurately for a luminance setting of 90. Does the spider software ask you to adjust either brightness or contrast during the calibration process?
The graph that has Kelvin/Input RGB is showing the colour temperature response of the monitor. The range the graph is showing is 9700K - 7800K which will make whites look more blue. Many monitors default to 9500K because the bluish whites look really bright in a show room demo area. For comfortable and reasonably accurate colors, you want it to be running at about 6500K which is close to daylight.
In the color section of the monitor menu, you can select 6500K in the color temp section. If it is already set to 6500K, the monitor may not be factory calibrated to 6500K that accurately. As a budget product, it would not be surprising if that is the case.
The menu does have has a “user defined” color temp option that will let you set the monitor menu to say 5000K or 5500K that will allow you to fine tune the actual output colour temp to a validated 6500K.
The shadows also look like the blues are being boosted. The “others” section of the monitor menu has an option
to adjust low blues. I would start with that turned Off and let the calibration software take care of it. in fact you will get the best calibrations if all the “picture enhancement” features are turned off.