John UM
One plus series of mobile phones has always been known as the little prince of brush machine. Each generation of one plus one flagship has a lot of third-party ROM, the brush machine is not only brushed into the ROM, but also can be brushed into the kernel to achieve overclocking or other functions. A lot of enthusiasts have tried it by brushing the kernel overclocking, but it is really rare to realize the PWM dimming to DC dimming by brushing the kernel. (Forgive me for less knowledge).
As we all know, because Samsung’s AMOLED screen will use low-frequency PWM dimming under low brightness, it will see stroboscopic shooting with the camera. Of course, the human eye can’t see the strobe, but long-term use will accelerate eye fatigue. So the screen is also known as the blink screen, but the appearance of this kernel seems to make this situation change
Thanks first @魔师蛋小丁 Open source and @想飞的伙 Recompiled kernel Magician Egg Ding pointed out on Weibo that this kernel is only high duty cycle PWM dimming, not DC dimming
This article adds 6 systems to the stable version of OxygenOS 9.0.3 based on Android 9.0.
Brush in.
Probably the brushing process: first unlock the phone to BL lock, brush into TWRP, and finally brush into the kernel. Of course, there is more than one method. For details, please refer to the one plus forum. (The article will post these links at the end) Show this interface and you’re done
Compare the kernel version:
The official default kernel.
DC dimming kernel.
The official kernel version. 4.9.106-perf+ And the DC dimming kernel version is 4.9.148~AE86-ETO-OP6/T-Pie-v1.0. This version number AE86 is ok
Screen strobe test.
Manually fix the brightness, the left side is the brushed kernel. One plus 6. , the right side is the original kernel. One plus 6T. The picture is from left to right. Minimum brightness. , ,. Quarter brightness. , ,. Half brightness. . See if this kernel is really “eye protection.”
Above are Default mode
Above are SRGB. mode.
Above are DCI-P3. mode.
Above are Adaptive mode
Above are Custom Mode
Above are Night mode.
DC dimming coverage color options are consistent with the forum, DC dimming covers sRGB, DCI-P3 and night mode, and the rest of the mode has not changed. In. sRGB, ,. DCI-P3 With. Night mode. Contrast, you can see the obvious difference, one plus six of the three modes of low brightness can hardly see the strobe. The default mode, adaptive mode and custom mode are not supported by the official OxygenOS for the low-brightness DC dimming. The performance is the same as the one plus 6T. This DC dimming verification is shocking me to see this big world. This is a small step in the dimming mode, a big step in human health!
Performance Testing
This kernel also adds 3707Mhz, 2764Mhz, 2784Mhz three frequency gears to the CPU core. The maximum GPU frequency is increased to 830Mhz
Geekbench 4 The CPU part is not much different. After all, just adding a few gears, the limit performance has not changed
GPU has both GFXBench and 3DMark for overclocking to 830Mhz with emphasis on GPU performance output. 10% Up and down promotion
The GPU’s frequency is basically maintained at the highest 830Mhz when running the score, and the continuous performance output is stable. There must be some loss, the frequency will increase the power consumption and the temperature will definitely increase accordingly. The daily playing game can also feel the back cover temperature is relatively high
Disadvantages.
The core is not finished, this kernel is still a little buggy in use. The official kernel will adjust the screen brightness infinitely. To lowThe brightness is turned off again, but the core will suddenly lower the brightness and then turn off the screen, the whole process is not smooth enough
Under the low-brightness DC dimming, the phenomenon of color tomography will appear, which is more obvious under the gradient background. Other bugs and the author mentioned in the forum, switch sRGB, DCI-P3, night mode and fingerprint unlock, the brightness will suddenly soar, you need to manually adjust the brightness to make the screen brightness down
To sum up.
In the few nights I used for a short time, the experience is still better than the official original kernel. The money for eye drops is saved. It is recommended that students with hands-on ability brush it. After all, the screen is not blinking and performance is improved. Why not do it. In the end, I would like to thank @魔师蛋小丁@想飞的人, thank them for their dedication, and made outstanding contributions to human health. The following are the tools needed to brush into the DC core: the BL lock, the TWRP, and the DC dimming core. Direct clicks of interested small partners to enter the original post learning, there are other ways to brush in the small partners can also leave a message in the comment area, share the experience. The above is all the contents of this assessment, thank you for your full viewing