MacBook Pro M2 14" resolutions not available

[lucouto]

Describe the bug
When I run ./displaymode d I get a list of resolutions but none similar to those available in the Display Settings.

To Reproduce
Steps to reproduce the behavior:

1. Start with resolution 1512 x 982 @120.0Hz *
2. Run the command displaymode d

Expected behavior
I was expecting the same list available in the Display Settings

Instead, I'm getting this:
Display 0 (MAIN):
1920 x 1200 @120.0Hz
1920 x 1200 @60.0Hz
1920 x 1200 @59.9Hz
1920 x 1200 @50.0Hz
1920 x 1200 @48.0Hz
1920 x 1200 @47.9Hz
2048 x 1280 @120.0Hz
2048 x 1280 @60.0Hz
2048 x 1280 @59.9Hz
2048 x 1280 @50.0Hz
2048 x 1280 @48.0Hz
2048 x 1280 @47.9Hz
2048 x 1330 @120.0Hz
2048 x 1330 @60.0Hz
2048 x 1330 @59.9Hz
2048 x 1330 @50.0Hz
2048 x 1330 @48.0Hz
2048 x 1330 @47.9Hz
2294 x 1432 @120.0Hz
2294 x 1432 @60.0Hz
2294 x 1432 @59.9Hz
2294 x 1432 @50.0Hz
2294 x 1432 @48.0Hz
2294 x 1432 @47.9Hz
2294 x 1490 @120.0Hz
2294 x 1490 @60.0Hz
2294 x 1490 @59.9Hz
2294 x 1490 @50.0Hz
2294 x 1490 @48.0Hz
2294 x 1490 @47.9Hz
2560 x 1600 @120.0Hz
2560 x 1600 @60.0Hz
2560 x 1600 @59.9Hz
2560 x 1600 @50.0Hz
2560 x 1600 @48.0Hz
2560 x 1600 @47.9Hz
2704 x 1690 @120.0Hz
2704 x 1690 @60.0Hz
2704 x 1690 @59.9Hz
2704 x 1690 @50.0Hz
2704 x 1690 @48.0Hz
2704 x 1690 @47.9Hz
2704 x 1756 @120.0Hz
2704 x 1756 @60.0Hz
2704 x 1756 @59.9Hz
2704 x 1756 @50.0Hz
2704 x 1756 @48.0Hz
2704 x 1756 @47.9Hz
3024 x 1890 @120.0Hz
3024 x 1890 @60.0Hz
3024 x 1890 @59.9Hz
3024 x 1890 @50.0Hz
3024 x 1890 @48.0Hz
3024 x 1890 @47.9Hz
3024 x 1964 @120.0Hz
3024 x 1964 @60.0Hz
3024 x 1964 @59.9Hz
3024 x 1964 @50.0Hz
3024 x 1964 @48.0Hz
3024 x 1964 @47.9Hz
1512 x 982 @120.0Hz

Desktop (please complete the following information):

• OS: macOS 15.0.1
• Device: MacBook Pro (14-inch, 2023) Apple M2 Pro

Additional context
Even more, when I change the resolution using ./displaymode t 3024 1890 @120.0Hz for example, the default resolution of 1512 x 982 @120.0Hz does not appear as available any more!

Could not find a mode for resolution 1512x982 @120.0

Display 0 (MAIN):
1920 x 1200 @120.0Hz
1920 x 1200 @60.0Hz
1920 x 1200 @59.9Hz
1920 x 1200 @50.0Hz
1920 x 1200 @48.0Hz
1920 x 1200 @47.9Hz
2048 x 1280 @120.0Hz
2048 x 1280 @60.0Hz
2048 x 1280 @59.9Hz
2048 x 1280 @50.0Hz
2048 x 1280 @48.0Hz
2048 x 1280 @47.9Hz
2048 x 1330 @120.0Hz
2048 x 1330 @60.0Hz
2048 x 1330 @59.9Hz
2048 x 1330 @50.0Hz
2048 x 1330 @48.0Hz
2048 x 1330 @47.9Hz
2294 x 1432 @120.0Hz
2294 x 1432 @60.0Hz
2294 x 1432 @59.9Hz
2294 x 1432 @50.0Hz
2294 x 1432 @48.0Hz
2294 x 1432 @47.9Hz
2294 x 1490 @120.0Hz
2294 x 1490 @60.0Hz
2294 x 1490 @59.9Hz
2294 x 1490 @50.0Hz
2294 x 1490 @48.0Hz
2294 x 1490 @47.9Hz
2560 x 1600 @120.0Hz
2560 x 1600 @60.0Hz
2560 x 1600 @59.9Hz
2560 x 1600 @50.0Hz
2560 x 1600 @48.0Hz
2560 x 1600 @47.9Hz
2704 x 1690 @120.0Hz
2704 x 1690 @60.0Hz
2704 x 1690 @59.9Hz
2704 x 1690 @50.0Hz
2704 x 1690 @48.0Hz
2704 x 1690 @47.9Hz
2704 x 1756 @120.0Hz
2704 x 1756 @60.0Hz
2704 x 1756 @59.9Hz
2704 x 1756 @50.0Hz
2704 x 1756 @48.0Hz
2704 x 1756 @47.9Hz
3024 x 1890 @120.0Hz *
3024 x 1890 @60.0Hz
3024 x 1890 @59.9Hz
3024 x 1890 @50.0Hz
3024 x 1890 @48.0Hz
3024 x 1890 @47.9Hz
3024 x 1964 @120.0Hz
3024 x 1964 @60.0Hz
3024 x 1964 @59.9Hz
3024 x 1964 @50.0Hz
3024 x 1964 @48.0Hz
3024 x 1964 @47.9Hz

So it's necessary to go back to 1512 x 982 @120.0Hz using the Display Settings

[p00ya]

Thanks for the detailed bug report, the extra information really does help.

I think the problem here is that displaymode is encountering some inconsistencies between raw pixel and scaled resolutions. That and Core Graphics treating the current resolution as a special case (which is why you can see 1512 x 982 when it's already selected but not afterwards - I suspect 1512 x 982 may actually physically be 3024 x 1964 with a scaling of 0.5).

I'll need to do some more investigation (ETA in the next week or two) but I think the solutions may be as suggested here: https://stackoverflow.com/a/30901980/135385

[lucouto]

Nice, thanks for the reply. Maybe a look at displayplacer may help?

[p00ya]

Sorry for the delay.

Please have a go from the dev branch (https://github.com/p00ya/displaymode/tree/dev).

Other than 1512 x 982, it seems like the lists match? Or have I missed something?