If there's no resolution that fits in both your Mac and your monitor's limits, these limits have no common space. This will for example allow to define 2560x1080 in 50Hz, which will remain under the 165 MHz limit. SwitchResX will help the Mac and the monitor into finding a resolution that matches their capabilities and is better than the only 1920x1080 resolution that you now have.

Most of the times, a good monitor can handle this lower frequency. You can define 2560x1080 at 50Hz for example, which is a resolution that fits in the standard limitation of 165 MHz for the bandwidth. With SwitchResX, you could define new resolutions that fit inside the monitors and the Mac’s limits, but that are not natively claimed by the monitor. One of the limitations of most Macs before 2014 when using a DisplayPort output is a resolution bandwidth of 165 MHz. In this case, there's no other predefined resolution claimed by the monitor that fits inside the Mac's limits. If 2560x1080 at 60Hz doesn’t fit the Mac’s capabilities, then the Mac will only activate 1920x1080 at 60Hz. Your Mac does or doesn’t activate each of these resolutions depending on its own capabilities.įor example, the monitor will send 1920x1080 at 60Hz as well as 2560x1080 at 60Hz as its wanted resolutions. The monitor communicate with the Mac and sends it a list of predefined resolutions it wants to get. Your Mac has limits in the resolutions it can send to the monitor and the monitor has limits in the resolutions it can show from the Mac. This question is valid for getting wide screen resolutions on older Macs. Below is an excerpt from the answer to the SwitchResX webpage FAQ: 'I can't get my wide screen monitor to show its native resolution on my Mac'. Once modifications are complete, SIP can be turned back on. This product requires System Integrity Protect (SIP) to be turned off in order for SwitchResX to modify macOS. One such tool for making modifications is SwitchResX.

Ironically, a bounty was offered for this question and no answer was accepted.īasically, you should be able to get a monitor with an ultra wide resolution of 2560x1080 ( WFHD) to work with any 2012 MacBook Pro, but this probably will require modifying macOS. (I assume the OP already did this before posted the question, but I may have come to a different conclusion.)Īctually, a similar question was asked over 6 years ago.

So, the best I can offer is an answer based on internet searching. When I first read this question, I assumed the OP was hoping for an answer from a user who actually had a 2012 MacBook Pro connected to a ultra wide monitor.

Macbook hdmi connector