yashsingh1/xdaforums huggingface dataset:
[Xiaomi Poco F1 Questions & Answers] ele95:
Did you tried last version of derp or optimus kernel
[Xiaomi Poco F1 Questions & Answers] MichaelScott5:
I did try Optimus and Franco. I will say that ghosts feels less frequent than before, and freezes are definitely fixed.
[Xiaomi Poco F1 Questions & Answers] Vinnom:
right now I'm testing Franco's kernel and ghost touch is definitely still here but I also noticed it less frequent

Freezes doesn't happen anymore. It seems I'm gonna keep notch hidden as it is the workaround for ghost touch

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[Xiaomi Poco F1 Questions & Answers] ele95:
Then it's like miui kernel no difference , ghost touches still present on both
[Xiaomi Poco F1 Questions & Answers] MichaelScott5:
Is there anyone else here who doesn't have ghost touches on stock rom and kernel but happens with custom ones? I just went back again to test and on full stock I don't get ghost touch anywhere.
[Xiaomi Poco F1 Questions & Answers] Vinnom:
After installing stock dev image 20190620, I didn't faced any ghost touch or freezing

Ghost touch just appear when using stock kernel on custom ROM for me, but that was what fixed the freezing for me. Now, with new kernel from franco (r28) just ghost touches happen but it is probably because they are using fts drivers from Mi Mix3 not from poco

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[Xiaomi Poco F1 Questions & Answers] Edu Lezcano:
Fts_ts here. No freeze or ghost touches in last 2 days.

Build:

- Unofficial LOS 25/06/2019

- 9.6.20 Vendor-Firmware

- Stock LOS's kernel
[Xiaomi Poco F1 Questions & Answers] ele95:
That's amazing , thanks for the confirm
[Xiaomi Poco F1 Questions & Answers] TekHck:
page not found
[Xiaomi Poco F1 Questions & Answers] ishtiak02:
Hey guys, how do I check which touch panel I have ?
[Xiaomi Poco F1 Questions & Answers] ele95:
This is just test , download stable one
[Xiaomi Poco F1 Questions & Answers] troyinjapan:
https://play.google.com/store/apps/details?id=ru.andr7e.deviceinfohw
[Xiaomi Poco F1 Questions & Answers] ele95:
Use device info hw app from play store
[Xiaomi Poco F1 Questions & Answers] DЯΦiDi@П:
fts_ts screen here - no freezes since lineage-16.0-20190628. Default kernel. :good:
[Xiaomi Poco F1 Questions & Answers] ele95:
Amazing news , what about ghost touches
[Xiaomi Poco F1 Questions & Answers] DЯΦiDi@П:
Personally, I did never have an issue with them. First, I was on CAF. No freezes, no ghost touches. When I switched to LOS, the freezes showed up and are gone now.
[Xiaomi Poco F1 Questions & Answers] Zerton:
What solution did you take to get rid of it

---------- Post added at 04:00 AM ---------- Previous post was at 03:55 AM ----------

I am in the crdroid latest build. Still freezing issue exist. Which version of miui stock kernel should I use?
[Xiaomi Poco F1 Questions & Answers] MichaelScott5:
I just don't get it. I have fts_ts screen, tried all the latest vendors and kernels, Lineage too and when I'm scrolling the notification quick settings still pulling down randomly on its own. I just give up.
[Xiaomi Poco F1 Questions & Answers] troyinjapan:
Install a custom kernel. Problem will go away. Optimus Drunk kernel or Malakas should help. My current rom, Evolution-X has the fix included in the beta, which releases soon. The kernels above have the fix included. I learned from akhinarang that the touch firmware is in the kernel.
[Xiaomi Poco F1 Questions & Answers] MichaelScott5:
Yeah, I tried the latest Optimus drunk, the only thing it fixed is the screen freeze.
[Xiaomi Poco F1 Questions & Answers] troyinjapan:
You're going to need to do a clean flash of everything. Good luck.
[Xiaomi Poco F1 Questions & Answers] MichaelScott5:
I did. I actually dedicated a whole day to try out different combination of kernels, vendors and ROMs, always clean flashed. My last try was to flash 10.3.5.0 vendor and kernel since when I'm on stock rom I don't have ghost touch, so I did with PE, and it didn't help. Maybe there has to be something done from ROM side as well?
[Xiaomi Poco F1 Questions & Answers] Adriano-A3:
No. Touch issues are kernel related, btw you can switch between issues changing kernel (freeze or ghost)
[Xiaomi Poco F1 Questions & Answers] :
I have recently discover a technic to find out ghost touch issue.

Method-

just fast scroll up n down randomly in setting menu....if the notification/status bar pull down automatically that means it hav GT.

Its probably a software bug with vendor-firm.
[Xiaomi Poco F1 Questions & Answers] DЯΦiDi@П:
Just flashed the latest LOS build (lineage-16.0-20190628) with build in patch https://review.lineageos.org/c/LineageOS/android_kernel_xiaomi_sdm845/+/250810
[Xiaomi Poco F1 Questions & Answers] atytse:
Hey all, seems like some of you had luck with custom rom or kernel?

For someone who thinks they have pinpointed the issue, can you kindly point me to the kernel drivers that managed to solve the issue? I'll try to ask the Dev to reference that.
[Xiaomi Poco F1 Questions & Answers] ele95:
this patch : https://review.lineageos.org/c/LineageOS/android_kernel_xiaomi_sdm845/+/250810 fixed some touch issue (freeze) but some people said that ghost still present even with this patch
[Xiaomi Poco F1 Questions & Answers] troyinjapan:
Try Optimus Drunk Kernel for Pocophone F1. I use the Evolution-X ROM, and it was adopted as the default kernel. If you don't want to flash a new ROM, try GtrCraft's ODK. Another option is to try the Malakas kernel.
[Xiaomi Poco F1 Questions & Answers] Vinnom:
man, he is not asking for using it xD

he is asking so miui devs can cherry pick the commit to miui or at least learn how to solve it.

[MENTION=4965939]atytse[/MENTION] probably it will be found at LOS gerrit here https://review.lineageos.org/c/LineageOS/android_kernel_xiaomi_sdm845/+/250810

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[Xiaomi Poco F1 Questions & Answers] Diagrax:
Are you using 9.6.27? Based on my testing, 9.6.27 causes the ghost touch when following your method.

I revert back to 9.6.24 and tried to replicate the ghost touch but it seems to be fixed on this version.

Would need confirmation from any of you guys. For you guys having issue with ghost touch, try 9.6.24 and report if you still have ghost touch issue follow @markmywordz method.

Using crDroid + Optimus Kernel + 9.6.24 vendor-firm
[Xiaomi Poco F1 Questions & Answers] :
yes.

9.6.27+shadow krnl v4.6+LOS16

i havnt face GT.:)

Use multiple fingers at a time while scrolling up n down(setting menu).
[Xiaomi Poco F1 Questions & Answers] MrSchaal:
Exactly the same setup and problem here. The random screen locks while typing are very annoying.
[Xiaomi Poco F1 Questions & Answers] ele95:
Disable double tap to sleep on status bar and 3 finger swipe for screenshot , it will help
[Xiaomi Poco F1 Questions & Answers] enatzkie:
Im confused. for now? what is the best firmware vendor +kernel + rom without any ghost touch and screen freeze? comments your set up. thanks!
[Xiaomi Poco F1 Questions & Answers] Diagrax:
It really depends on individual perspective, for me crDroid + Optimus Kernel + 9.6.24 vendor-firm works out on my FTS-ts screen but some might have some issue (for example: ghost touch) for user with NVT-ts screen.

From what I've seen, for people who have FTS their screen freeze is kinda fixed with the latest vendor 9.6.20 onward and using certain kernel like I've mentioned.

I may suggest using my build but It might not works for you, It really boils down to trial and error approach.
[Xiaomi Poco F1 Questions & Answers] Abhishek240997:
If anyone is facing high touch latency issues in nvt panel while playing pubg then just set gpu governor to performance. I always thought there was some touch driver issue with nvt panels but its some kind of gpu issue. I have no touch lag after setting gpu governor to performance in pubg.
[Xiaomi Poco F1 Questions & Answers] Aelliaria:
So here is my experience so far:

2 weeks ago I did a clean flash with, what was then the latest firmware and vendor (9.6.20) NitrogenOS and Malakas kernel, and had no ghost touches and screen freezes.

But after 2 weeks the screen freezes start to pop up and where so bad I did a new and clean flash yesterday, with latest firmware and vendor (9.6.27) and NitrogenOS but this time I did not flash any kernel. Sadly with "stock" kernel the screen freezes where stil there but not as bad as they where.

Now I flashed Optiumus Drunk kernel and the screen freezes are gone, hoping this time they are not comming back, wil let you guys know in 2 weeks if they are not back, and sooner if they are ;)

goodluck finding a solution!
[Xiaomi Poco F1 Questions & Answers] droidjunky90:
This thread was about Damn Screen Freezes am making a Damn Ghost Touches thread, God damn ghost touches make the phone unusable
[Xiaomi Poco F1 Questions & Answers] dausjalil:
i using oos + stock kernel + 9.6.27 firmware and vendor + vendor patch (from oos threads) also got random freeze... if possible i chg the kernel? Optimus drunks kernel good? can use kt oos?
[Xiaomi Poco F1 Questions & Answers] ele95:
I'm using oos too u need to flash last miui beta kernel
[Xiaomi Poco F1 Questions & Answers] dausjalil:
im using 9.6.27 its last beta kernel.. i get random freeze screen.. sometime in home screen.. sometime in game.. its really make me want throw my phone.. :rolleyes::rolleyes::rolleyes:
[Xiaomi Poco F1 Questions & Answers] atytse:
Hi there, we just pushed out the stable 10.3.5.0. Can you try and let us know if the touches are better, same or worse? Thanks.
[Xiaomi Poco F1 Questions & Answers] silentmann:
Same, ghost touches and screen freezes everywhere in stable 10.3.5.0. Can You just push updated touch screen drivers in the next stable update from 9.6.20 and 9.6.27 betas?
[Xiaomi Poco F1 Questions & Answers] troyinjapan:
The touch screen drivers on non-NVT-ts panels is 100% irresponsible by your company. The non-tech savy customers are basically stuck with a garbage phone. It took a while for the super smart Pocofone developers on XDA to implement the fixes and make the phones usable.

Why are there different touch panels to begin with?

The fix has been way too long coming. This incident is really a black mark on your company and the customers. I've had 5 Xiaomi phones previous with my family, and we bought 2 Pocofones, and they ended up coming with different touch panels, meaning with the same ROM and firmware, 2 completely different experiences, until recently, when it's gotten a little better.

It horrible that it hasn't been priority #1 to fix the freeze (and ghosting that other people have experienced).

It's nice that you are reaching out, but up-to-date, actions or in this case fixes and the speed which they haven't come indicate poor management of these issues.

Solution: Put your team together and make it the focus to fix these things this week. Then reach out to the kernel developers here and give them the information to implement into the custom roms and the custom kernels.
[Xiaomi Poco F1 Questions & Answers] Vinnom:
hey man

disable notch has been the workaround for ghost touch

although I kinda agree with you, I want to talk about some points:

- every oem works with different sets of components. I don't really know why, but they do. So this isn't the real problem. Imo, the problem is the delay to fix (or at least take part into this) such a problem because screen freezing and ghost touches completely ruin UX

- The part you talk about reaching out dev from custom rom and custom kernel... Idk man. Custom is a community thing. Would be nice if custom rom and kernel had support from xiaomi, but you see, it will never happen. And it's ok, because custom devs will do their own take on this (like they did and solved the problem forking the drivers from another device)

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[Xiaomi Poco F1 Questions & Answers] troyinjapan:
I disagree, when the different components are hidden from the users and you don't get the same experience. For example, I ordered two Pocofones, at the same time, from the same seller, one blue, one black. My black one game with a NVT touchscreen and the blue one came with an FTS touchscreen. NVT = better experience, no real problems, FTS = freezing and constant problems until recently. Two completely different experiences. You can't choose which touchscreen panel to buy or request, and you can only find out after the fact with a special app.

The lack of speed fixing the freezing and ghosting is inexcusable. While posting to check-in is nice, it hasn't made a real difference actually solving the problem.
[Xiaomi Poco F1 Questions & Answers] Vinnom:
Hmm maybe I didn't express myself right. You see, all of the OEMs (or at least a lot of them) does that kind of thing. With Huawei Nova, for example, I had a different camera setup from most, which led me to bad experience with custom ROM in the beginning. But it wasn't a problem in stock, because it worked. I wouldn't even know I had a different camera setup if I didn't try a custom ROM. My point is, if Xiaomi delivered the same user experience for both panels, we wouldn't have this conversation right? So different components isn't the real problem. As you said, the lack of support for this long doesn't have an excuse, but in the last beta updates they're trying to fix it so the support is there (but it took long. There are reports of screen freezing and ghost touches dating from April). Another thing is, after trying to fix FTS, some users found issues with their NVT iirc. So, NVT isn't necessarily equal to good experience and FTS to bad experience. Again, if their worked rightly, many of us wouldn't even know that there are different panels in this phone.

PS: if you read this post, you can see that NVT already was a pain for users too, it isn't exclusive for FTS users. If I'm not mistaken, NVT is from an older batch than FTS.

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[Xiaomi Poco F1 Questions & Answers] troyinjapan:
Thank you for the information. Reading the thread,and looking at the dates where the problems occurred, solidifies my opinion that the users got f**ked. Shame. Lucky I only had to endure the tail end of the slow touch screen disaster response by Pocofone team.
[Xiaomi Poco F1 Questions & Answers] Vinnom:
guys, just to report

I'm on latest Reloaded-CAF (updated CAF tags and kernel drivers) and I still face ghost touches when notch is enabled. But it rarely happens (Idk 3 times a days when SOT is 7h hours...)

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[Xiaomi Poco F1 Questions & Answers] renansince91:
-deleted
[Xiaomi Poco F1 Questions & Answers] diegoms51:
Actually, the touch freeze is over but the ghosts are there. Unfortunately I will have to stay in the miui until this is solved

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[Xiaomi Poco F1 Questions & Answers] atytse:
Hi all, thanks for agreeing to help. As you can see from the threads, some are suffering from screen freeze but some said it's fixed. And some others are suffering from ghost touch or touch lags. When subjectivity and placebo effect kick in, it makes it even tougher for us to identify signal from noise. To that end:

(1/2) Now that 10.3.5.0 stable has been released for POCO F1 and some improvements have been reflected in the build, we are looking to analyze devices that are facing 1) screen freezing 2) ghost touch 3) touch lags. We will need to collect some devices to further test.

(2/2) If you are willing to send in your device (touch issues only), then please send your user ID, contact info, description of issue, Feedback ID, videos/screenshots to vzhaoxiaomi@gmail.com. If your device can help solve the issue, we will reach out and contact you. Thanks!

On having a second supplier, this is standard manufacturing practice as supply can be disrupted if anything happens to a sole supplier so we always will need a second source.
[Xiaomi Poco F1 Questions & Answers] baiMangau:
Interesting enough, I haven't had any screen issues for some weeks now. Latest crDroid, latest Franco kernel, 9.6.27 ven+firm. I even enabled the notch back and it's all good. Let's see how long till I get a ghost visit :)
[Xiaomi Poco F1 Questions & Answers] Mord0rr:
It seems Xiaomi is exchanging officially devices....

Now i understand why my wife phone has "ghost issues" on screen....

No mods, no root, nothing. Its from my wife phone.
[Xiaomi Poco F1 Questions & Answers] al6am:
After flashing LOS16 with vendor/firmware 9.4.26 and sphinx kernel, the inacuracy on the edges finally got fixed. NVT-ts screen here.
[Xiaomi Poco F1 Questions & Answers] vetkos:
Hi guys,

Is this hardware or software issue, regarding screen freezes, ghost and touch lagg. I have a lot of these issues

I bought my phone 5 months ago. It is still under warranty. Should I send it back for warranty, or wait till Xiaomi fixes these issues through updates.

Miui Global 10.3.5.

Fts_ts panel

Phone manufacture date 2019.01
[Xiaomi Poco F1 Questions & Answers] silentmann:
This is software issue, bad touch drivers, but you can send your phone to xiaomi. Tbh i want to sell this phone already and buy less powerful but without touch lag phone and never come back to xiaomi.
[Xiaomi Poco F1 Questions & Answers] alifarhad:
To all those who are still having these touch related issues, could you try and flash malakas kernel? That kernel fixed all my touch issues it might work for you as well!
[Xiaomi Poco F1 Questions & Answers] Xaeron00:
There's some little ghost touch occur sometimes but not as severe as other kernel. BTW what ROM do you use.
[Xiaomi Poco F1 Questions & Answers] alifarhad:
Currently I'm using MIUI stable latest version came out in July. Previously I tried beta, eu roms and basically all MIUI roms. In all those roms I had severe touch issues and the only thing that worked was flashing custom kernels in my case I flashed malakas and Franco and both of them worked.

Additionally, I tried pixel experience and crdroid roms as well and faced no touch issues out of the box though I'm sure one of those roms also uses custom kernel derp or something? In any case this is definitely a kernel related, touch optimization issue and somehow messes whole thing up on MIUI roms. So you should definitely try those out and see if it works for you as well.

PS: I have NVT-ts panel
[Xiaomi Poco F1 Questions & Answers] fullydeveloped:
Do you know if any part of your phone's rom/firmware/vendor/kernel were updated as well? My 12.2018 fts panel has ghost and freeze touches that are reduced by a vendor and custom kernel combo. But you're sure it's the panel?
[Xiaomi Poco F1 Questions & Answers] Aelliaria:
So more then 2 weeks later still no touch problems, seems my problem is fixed :D
[Xiaomi Poco F1 Questions & Answers] ron_hyatt:
i never had any touch issues since i got the phone 7 months ago .....i tried MANY miui stable,betas ,miui based and custom roms with no issues ......but two weeks ago and out of the blue i started getting screen freeze which is temporarly fixed by locking and unlocking the phone!!

during the past two weeks,i flashed every possible rom,kernel,vendor firmware and thermals available but still have the same problem!!!!

the phone is perfectly normal after clean flashing a rom just until i start playing this damned pubg:(

panel is fts(december 2018).

i dont want to sell this phone then feel frustrated if someone find a definite fix for this curse Lol!
[Xiaomi Poco F1 Questions & Answers] henriluiz:
I tried many combos of vendor and firmware before replace the panel.

Before change the panel I've ghost touches on miui beta 20.6, after change only the panel (I replace the old fts for a new one fts), the ghost touches are gone on the same rom / vendor.
[Xiaomi Poco F1 Questions & Answers] Aurolei:
So I used to get persistent ghost touches (screen freezes have completely stopped for me ever since Junes kernel updates). The ghost touches for me would cause the notification slider to persistently drop down and it would happen several frustrating times a day.

When a new pixel experience rom got released, I found out that I had incorrectly updated my phone prior. Upon fixing my mistakes, I was surprised that I had no longer any ghost touch issues and have not had any in the last 10 days. I've documented what happened in my experience in another thread for anyone interested here: Link

Considering how many people continue to have ghost touch issues on 9.6.27 vendor+firmware, I think I have possibly lucked out on an actual solution for this issue. For anybody with really bad ghost touches - to the point where you will want to try anything, you might want to consider replicating what I did and sharing with others here if it worked. It is quite a bit of work though, so definitely not for everyone.
[Xiaomi Poco F1 Questions & Answers] ron_hyatt:
so after two weeks of frustration from touch issues and going thru all existing roms,kernels and vendors...I decided to clean flash miui 9(9.6.25) global stable using mi flash tool....I dont have any custom recovery or root now and didnt install the damn pubg (installed fortnite instead) and i dont have a single touch issue so far!!

note: the very same miui 9(9.6.25) recovery rom (flashed thru twrp)had the same touch issue but with its fastboot miflash full rom version....touch is as good as it was out of the box 7 months ago:)

touch issues used to appear few minutes after starting pubg but now with fortnite(an equally heavy game) its a different story....am not a fortnite fan by the way.

hope this helps someone:)
[Xiaomi Poco F1 Questions & Answers] alifarhad:
My experience has been nearly the same as yours. None of miui builds work with stock kernel. More precisely, running miui builds on stock kernel results in serve touch and ghost issues. However, flashing custom kernels (malakas, Franco, derp etc) fixes all the touch issues.

So for future references, anyone who wants to be on MIUI rom, flash custom kernel on top of it in order to fix touch/ghost issues.
[Xiaomi Poco F1 Questions & Answers] tinko975:
Which kernel is recommended?

Can it be flashed on LineageaOs 16?
[Xiaomi Poco F1 Questions & Answers] Adriano-A3:
Custom kernels cause screen freezes.

There is no way to be happy with fts.
[Xiaomi Poco F1 Questions & Answers] ron_hyatt:
I agree with you about custom kernels and screen freezes but my panel is fts and my touch issues only start after installing pubg......when i dont install pubg i never have touch issues(heavy games like fortnite work perfectly and on max graphics).
[Xiaomi Poco F1 Questions & Answers] Adriano-A3:
Rly? I only play Brawl Stars and installing it or not touch issues come on every single try.
[Xiaomi Poco F1 Questions & Answers] ron_hyatt:
yep,my unit has no touch issues until i install the damned pubg
[Xiaomi Poco F1 Questions & Answers] Adriano-A3:
Hmmm I think touch issues still there but you won't notice them if you don't play some game
[Xiaomi Poco F1 Questions & Answers] ron_hyatt:
well,i already mentioned in earlier posts that am playing mc5 and fortnite on max graphics with no touch issues at all......but i experience touch freeze,ghost touch and lag with pubg(i know its weird but true!)
[Xiaomi Poco F1 Questions & Answers] alifarhad:
Idk about your experience but on my device with NVT panel, none of the stock kernel has ever worked. Custom Kernels are the only reason I'm able to use my device without any touch or ghost issues
[Xiaomi Poco F1 Questions & Answers] jody2k:
Well I must say the screen freezes and inaccurate touch are bothering me badly now. I'm buying the S10 and never buying anything anymore from xiaomi. They screwed it up srsly by using low grade touch panels omg
[Xiaomi Poco F1 Questions & Answers] silentmann:
This is only possible way in this situation(buyin another phone from samsung, oneplus or google), funny thing is that this is more software related issue that xiaomi "developer team" cant fix for quiet long time. Touch problems in 2019 is just insane and nonsense especially software related, I can't remember such issues on touch panels since 2009 when I started to use smartphones.