Hello, i have AMD Radeon R9 380 Series on a PC running on Windows 10,i also have 29" UltraPanoram monitor LG , t
he problem: every time when I turn on the computer display mode on the monitor is in the format 640/480 ..... But when you click preferenecji desktop and selecting "verify" the screen after about 15 minutes jumps to the correct resolution that is 2560x1080. ((I have the latest drivers reinstalled them several times as well as reinstall the system.).) so what is the solution ???
Navigate to Windows Device Manager > Monitors and double click the monitor >driver tab and check that it is enabled.
Right click your desktop > display properties > advanced display settings > and set the correct resolution. Click apply and confirm the resolution. Restart your system.