Possible to use resolutions higher than native screen resolution?

[LukaJankovic]

I have a 1440p screen on my laptop; with 1x scaling everything is too small and with 2x scaing everything is too large. So on Xorg I created a 4k resolution and used it with 2x scaling to get to a comfortable size. However, applying 3840x2160 doesn't seem to work using this tool. I also tried 3200x1800 with similar results. However, applying 1920x1080 works perfectly. I'm not if this is to any relevance, but here's what I've got:

LThinkpad │ $ sudo edid-decode 3840x2160.bin
[sudo] password for Luka:               
Extracted contents: 
header:          00 ff ff ff ff ff ff 00                                        
serial number:   31 d8 00 00 00 00 00 00 05 16                                  
version:         01 03                  
basic params:    6d 64 38 78 ea         
chroma info:     5e c0 a4 59 4a 98 25 20 50 54                                  
established:     00 00 00               
standard:        c1 c0 01 01 01 01 01 01 01 01 01 01 01 01 01 01                
descriptor 1:    6b 16 00 c0 f5 70 4d 80 40 a0 35 00 e8 32 32 00 00 1e          
descriptor 2:    00 00 00 ff 00 4c 69 6e 75 78 20 23 30 0a 20 20 20 20          
descriptor 3:    00 00 00 fd 00 3b 3d 85 87 48 00 0a 20 20 20 20 20 20          
descriptor 4:    00 00 00 fc 00 33 38 34 30 78 32 31 36 30 5f 36 30 2e          
extensions:      30 
checksum:        30 

Manufacturer: LNX Model 0 Serial Number 0                                       
Made week 5 of 2012 
EDID version: 1.3   
Analog display, Input voltage level: 0.7/0.7 V                                  
Sync: Separate Composite Serration      
Maximum image size: 100 cm x 56 cm      
Gamma: 2.20         
DPMS levels: Standby Suspend Off        
RGB color display   
First detailed timing is preferred timing                                       
Established timings supported:          
Standard timings supported:             
  1792x1008@60Hz    
Detailed mode: Clock 57.390 MHz, 1000 mm x 562 mm                               
               3840 3904 4064 5312 hborder 0                                    
               2160 2163 2168 2237 vborder 0                                    
               +hsync +vsync            
Serial number: Linux #0                 
Monitor ranges (GTF): 59-61Hz V, 133-135kHz H, max dotclock 720MHz              
Has 48 extension blocks                 
Checksum: 0x30 (should be 0x3e)         
EDID block does NOT conform to EDID 1.3!                                        
        Name descriptor not terminated with a newline                           
EDID block does not conform at all!     
        Block has broken checksum

Also, I'm running Fedora. Apologies if I missed something blatantly obvious,
Thanks!