I recently built a new PC and when I remote into it the screen resolution keeps defaulting to 640x480 and there are no other resolutions available to choose from. I have 2 - 4k monitors hooked up to a Radeon WX 5100 GPU. Any ideas?
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Try checking to see if there are updates available for your video card and monitor driver.
The presence of a single resolution may be linked to an incompatible driver.
Latest monitor drivers installed. Still nothing higher than 640x480. I've never had this issue with any other computers.
I have this 640x480 resolution problem until today:
After this I can connect again in 1680 x 1050.
Sure ! My teamviewer in my phone to my PC had only resolution of 640*480. Then I updated my "monitor (not video adaptor)" driver and the resolution returned to 2560*1440 although the system told me "the driver is already the newest."
I know I am a bit late to the party, but are the monitors off?
640x480 is the default resolution that is defaulted to when no monitor is connected.
TeamViewer only provides a direct stream of exactly what is being output at the remote side. So if you are getting 640x480, this means the remote side is 640x480.
With some monitors, when they are off the graphics card cannot read their specs and so the display defaults to 640x480. Essentially, your remote computer is headless in this case which would be causing it.
So just turn the monitors on.