HiDPI often not available for 3062 x 1282

[jyeseudo]

Hi. I'm using a Mac mini with Xiaomi G34WQi and has been Better Display for almost 14 days and bought a licence yesterday.

Prior to updating to os 15.0.1, I had no issue with using 3062 x 1282 with HiDPI as a default display. After updated to 15.0.1, I noticed that HiDPI often not available and the resolution would only be 3062 x 1282 with LoDPI. Sometimes, when I "sleep" the machine and turn it back on, there was 3062 x 1282 with HiDPI to select.

So I downloaded a Better Display pre-release 3.1.0. It hasn't solved the issue. I think this issue hasn't been raised in the known issue list that I looked at but if it had been, I apologise.

Please advise. Thank you.

[waydabber]

macOS 15 added further framebuffer pixel clock limits on HiDPI to some configurations, especially in HDR and higher refresh rates. If you are using a high refresh rate mode, try decreasing the refresh rate to see whether the HiDPI mode becomes available. There was a similar issue to what you describe on Sonoma (need to reinitialize the display sometimes to have custom modes), but afaik this is a bug that was resolved in Sequoia.

#3406

[waydabber]

Also make sure you do not use HDMI.

[jyeseudo]

@waydabber I've always used USB C to Display Port, which is now connecting to the monitor.

[waydabber]

Ok. Have no more ideas then. It is a mystery. Try rebooting.

[jyeseudo]

@waydabber I've solved the issue by unplugging the display port and plug it in again. It solved the issue. Thank you

[waydabber]

Hope it will be a permanent solution. I am not sure why the resolution is limited like that from time to time. 😕