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Development - [r24] arter97 kernel for OnePlus 9 series | Page 32 | XDA Forums

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Development [r24] arter97 kernel for OnePlus 9 series

Aqq123

Senior Member
I've been looking forward to flashing this kernel. But has anybody been using it with LOS 18.1?

I've just tried the latest release, r23, with the latest LOS 18.1 official nightly (2022-05-24). The text size is just tiny, which surely can't be intentional. Same on r21. The last release where everything is not wildly scaled down seems to have been r20.

Separately, whether on r20, r21, or r23, scrolling is beyond jerky. This is as long as 60 Hz is set in Settings → Display → Advanced → Minimum refresh rate, which is the default. The screen stays at this rate all the time, it never goes up. Changing the setting to 120 Hz works around this issue: scrolling is smooth but at the cost of making the screen run at 120 Hz all the time. (As reported by the Show refresh rate overlay enabled in Settings → Developer options.)

Before installing I've read through the whole thread and nobody mentioned any such problems. I've now also checked the Telegram group and there's a mention of a similar issue back in July, although it refers to CrDroid, but no follow-up.

This is with the custom branch, which I tried first as I believe it's the one intended for non-OOS use. For comparison, I then also tried r23 from the oxygenos-11 branch. The screen movement is not as jerky even when set to 60 Hz, there are also more choices for Minimum refresh rate: 72 Hz and 90 Hz (choosing either changes the rate to 120 Hz, which is probably to be expected since I'm not on not stock).

However this version is clearly not intended for use with LOS since the camera punchout is in the wrong place, making it look like Mickey Mouse with an ear missing.

Anyway, the kernel is obviously very well-thought out, and the changes documented in detail. It's already on its 23rd release, the author has completed a lot of difficult work and resolved a lot of much more difficult issues. So unless I'm missing something, the only conclusion must be that nobody has been using this kernel with LOS 18.1, right? And it's just not supposed to be compatible.
I've been looking forward to flashing this kernel. But has anybody been using it with LOS 18.1?

I've just tried the latest release, r23, with the latest LOS 18.1 official nightly (2022-05-24). The text size is just tiny, which surely can't be intentional. Same on r21. The last release where everything is not wildly scaled down seems to have been r20.

Separately, whether on r20, r21, or r23, scrolling is beyond jerky. This is as long as 60 Hz is set in Settings → Display → Advanced → Minimum refresh rate, which is the default. The screen stays at this rate all the time, it never goes up. Changing the setting to 120 Hz works around this issue: scrolling is smooth but at the cost of making the screen run at 120 Hz all the time. (As reported by the Show refresh rate overlay enabled in Settings → Developer options.)

Before installing I've read through the whole thread and nobody mentioned any such problems. I've now also checked the Telegram group and there's a mention of a similar issue back in July, although it refers to CrDroid, but no follow-up.

This is with the custom branch, which I tried first as I believe it's the one intended for non-OOS use. For comparison, I then also tried r23 from the oxygenos-11 branch. The screen movement is not as jerky even when set to 60 Hz, there are also more choices for Minimum refresh rate: 72 Hz and 90 Hz (choosing either changes the rate to 120 Hz, which is probably to be expected since I'm not on not stock).

However this version is clearly not intended for use with LOS since the camera punchout is in the wrong place, making it look like Mickey Mouse with an ear missing.

Anyway, the kernel is obviously very well-thought out, and the changes documented in detail. It's already on its 23rd release, the author has completed a lot of difficult work and resolved a lot of much more difficult issues. So unless I'm missing something, the only conclusion must be that nobody has been using this kernel with LOS 18.1, right? And it's just not supposed to be compatible.

You can change the smallest width size to 411 in either display settings or developer options. It should fix the camera cut-out issues as well but make sure your flashing the custom version of the kernel. It should work smoothly on Lineage 18.1 as it works well in Crdroid v7

arter97

Recognized Developer
Oct 14, 2012 3,818 34,303 Seoul
A minor (or major, depending whether you actively use hotspot) update is up.

I've noticed that my Tesla needlessly takes a lot of time to detect and connect to my hotspot. The underlying issue was that the userspace's AP daemon, hostapd, was occasionally trying to use DFS channels for hotspot.

Using DFS requires a 60 seconds delay (mandated by law) so that it can avoid using critical radar frequencies.

While such delays can be tolerable for stationary router, it is not on mobile, hence it is forcefully disabled on the kernel-side.

r24
Disabled DFS on AP mode to remove 60 seconds delay on hotspot activation
LA.UM.9.14.r1-20800-LAHAINA.QSSI13.0 merged
Linux v5.4.224 merged
Latest exFAT from Linux v6.1 merged

Stogie87

Senior Member
Oct 3, 2015 1,076 Berlin
Hi @arter97.
Since you skipped the crappy A12 do you plan to support A13 with new kernel builds or will it always be A11?
Thanks in advance and kind regards

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