It was expected infirm as it doesn’t work that well
Update 4/8/18: We have schooled some-more information about this dark shade mode. See below.
Well, here’s something interesting. The Sony Xperia XZ Premium is a 2017 flagship that is many important for a 4K HDR display, yet there’s another dark pretence adult a sleeve: Its arrangement row indeed supports a high support rate 120Hz mode like a Razer Phone. Rumors of this dark shade mode have been floating around a Internet given around a time of a device’s launch, yet since it requires a alteration to a heart to enable, not many users have been means to indeed exam it. Recently, however, we’ve been hearing that many users have started to exam this dark shade mode…and a formula are flattering inconsistent, unfortunately.
For context, a Xperia XZ Premium arrangement row supports 3 shade modes: 1080p@60fps, 2160p@60fps, and lastly a infirm 1080p@120fps mode. This infirm high support rate mode can be enabled by reverting this commit to a arrangement row pattern in a heart source code.
Thanks to a Sony Open Device Program that supports a Xperia XZ Premium for a latest Android Oreo release (and even on Linux heart chronicle 4.4!), it’s sincerely easy for developers to build a organic AOSP ROM for a device. (Unfortunately, there’s a slow emanate with a DRM keys being wiped when unlocking a bootloader, ensuing in trashy camera performance.) Using a latest sources, XDA Member uditrawat gathered Android 8.1 Oreo for a XZ Premium with support for a 120Hz shade mode.
According to several members of a forums who tested a build, a formula are inconsistent. Some contend that it works, while others contend it’s zero yet a placebo. Personally, we consider if it worked, it would be really easy to notice. Perhaps AOSP doesn’t support high support rate displays natively and instead requires additional rags to a framework. One tester who flashed a Generic System Image build of LineageOS 15.1 for a Razer Phone reported that a phone ran during 90Hz (the default modernise rate specified in that phone’s kernel), so I’m not too certain of a reason since it doesn’t work for a Sony Xperia XZ Premium.
Regardless, it’s utterly an engaging growth to watch. There contingency have been a good reason since a Sony Xperia XZ Premium doesn’t concede for a 120Hz modernise rate out of a box. we don’t consider it has to do with opening as a device uses a same system-on-chip as a Razer Phone (the Qualcomm Snapdragon 835), so I’m disposition towards Android harmony or maybe arrangement row inconsistency. Hopefully, developers are means to work out a kinks here to get a Sony Xperia XZ Premium fast during 120Hz, or hopefully, Android P will strictly supplement support for high support rate displays. Given Sony’s lane record with submitting upstream changes to AOSP, we would consider that if a association truly wanted a XZ Premium to support a high support rate mode, we would be saying support for it in AOSP already.
Update: More devices, some-more information
It turns out that there are some-more Sony inclination that have a dark 120Hz arrangement mode infirm by a kernel. XDA Recognized Developer Myself5 went digging into a source to endorse to us that a Sony Xperia X, Sony Xperia X Performance, Sony Xperia XZ, Sony Xperia XZ1, Sony Xperia XZ1 Compact, Sony Xperia XA2, and Sony Xperia XA2 Ultra all support this shade mode. Basically, any new Sony phone solely for a Sony Xperia X Compact should support this mode.
However, a shade mode now isn’t operative on the AOSP ROMs gathered for these inclination since a toggle to switch between a modes doesn’t work. That doesn’t meant a shade mode itself doesn’t work, though, as Myself5 states that environment a heart to default to that shade mode would work. If or when a 8.1 builds for these Sony inclination support a high support rate shade mode, CarbonROM and other AOSP-based ROMs will start to confederate those patches.