Connecting two monitors to my 2022 macbook pro m1 pro chip, but one monitor's resolution is limited to 1024x768

We can not see your computer, your cables, your docks, your displays. That is a lot of complex equipment that could be connected in a multitude of ways.

please step back and describe what make&model display is connected with EXACTLY what cables, adapter and docks, separately for as many displays as you have. Mention every item in the chain, in order, no matter how trivial.

"Non pnp", does that mean not Plug-n-Play?

a process similar to plug-n-play only way a Mac can reliably determine a displays settings. This is likely a deficiency in your Dock. that cable, even a shipped in the box cable, should be adequate.

if you display does not show up at all:

to get a Mac display to become active, you need the Mac to query the display, and the display to answer with its name and capabilities. Otherwise, the display will not be shown as present, and no data will be sent to the display. "No signal detected" is generated by the DISPLAY, not by the Mac.

This query is only sent at certain times:

• at startup

• at wake from sleep — so momentarily sleeping and waking your Mac may work

• at insertion of the Mac-end of the display-cable, provided everything on that cable is ready-to-go

• on invoking Option-(Detect Display) button in Displays preferences (from another display)

so try doing some of those things and see if the display comes alive.

your could try something like this:

Monoprice Consul Series USB-C DisplayPort Adapter - Product # 35503 - $13.99  

.

Just the threat of so much scrutiny must have been enough to get it to straighten up!