My computer (ThinkPad X1 Carbon 7, 4K Display, Intel(R) UHD Graphics (620)) gets the same issue.
I also observe that whenever I switch to an image processing app (i.e. MS Paint 3D, MS Photos) with an image opened therein, the image will be at first displayed in a shinked space (left half) like the wallpaper posted in the first post in this thread, and
is then stretched to the full space as normal.
I guess these issues are caused by the Intel graphics driver.
Current configuration:
OS Name Microsoft Windows 10 Pro
Version 10.0.19042 Build 19042
System Model 20R10015US
System Type x64-based PC
System SKU LENOVO_MT_20R1_BU_Think_FM_ThinkPad X1 Carbon 7th
Processor Intel(R) Core(TM) i7-10710U CPU @ 1.10GHz, 1608 Mhz, 6 Core(s), 12 Logical Processor(s)
BIOS Version/Date LENOVO N2QET33W(1.27 ), 2020-10-08
SMBIOS Version 3.2
Embedded Controller Version 1.14
BaseBoard Version SDK0J40697 WIN
Hardware Abstraction Layer Version = "10.0.19041.488"
[Display]
Item Value
Name Intel(R) UHD Graphics
PNP Device ID PCI\VEN_8086&DEV_9BCA&SUBSYS_229217AA&REV_04\3&11583659&1&10
Adapter Type Intel(R) UHD Graphics Family, Intel Corporation compatible
Adapter Description Intel(R) UHD Graphics
Adapter RAM 1.00 GB (1,073,741,824 bytes)
Installed Drivers C:\WINDOWS\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_f4adeb80f59beec6\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_f4adeb80f59beec6\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_f4adeb80f59beec6\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_f4adeb80f59beec6\igd12umd64.dll
Driver Version 27.20.100.8729
INF File oem20.inf (iCML_w10_DS section)
Color Planes Not Available
Color Table Entries 4294967296
Resolution 3840 x 2160 x 60 hertz
Bits/Pixel 32
Memory Address 0xE9000000-0xE9FFFFFF
Memory Address 0xC0000000-0xCFFFFFFF
I/O Port 0x0000FFC0-0x0000FFFF
IRQ Channel IRQ 4294967273
Driver C:\WINDOWS\SYSTEM32\DRIVERSTORE\FILEREPOSITORY\IIGD_DCH.INF_AMD64_F4ADEB80F59BEEC6\IGDKMD64.SYS (27.20.100.8729, 25.82 MB (27,071,216 bytes), 2020-10-05 21:49)