yashsingh1/xdaforums huggingface dataset:
[Lenovo P11] jeryll:
Interesting, you may try to play your HDR(10+), DoVi files with MX Player, in my experience that's only one (of the few, (if not the only one)) player which try to send on screen of the device where is installed exactly what you "feed it" (tested years on my Philips OLED Android TV - so I have something to compare with)...

I'm unfamiliar with the Plex, but isn't it transcoding utility? You may get from it an optimized stream which may have nothing with the original file ... Also, VLC is well known and widely used player ... and it tries really hard to bring you watchable content on screen of your device ... but you can't really verify what it shows you, because if you feed it HDR content on device, which cannot play HDR it automatically tone map HDR to SDR (without saying so) and you can watch your files just fine (except it isn't real HDR (but you can watch it just fine)).

So, if you want, please, do some more tests (or not), but report your findings through Feedback part of the Settings, prepare some screenshot that may help devs to pinpoint problems, include them in your report and send it ... the more people will report this or other bugs, the bigger is chance the devs will actually fix it, thanks...
[Lenovo P11] longxa762:
Having the same issue as you (Xiaoxin Pad Pro 2022 1300T model) just arrived today.

Everything else work flawlessly but the HDR videos are showing black kinda grey instead of true black.

Tested on Youtube and a few players using Sony Swordsmith HDR demo. If you screenshot it the photo is showing true black so maybe something is wrong with the display?

Hopefully it's just a software bug and will be fix soon.
[Lenovo P11] Plumplum88:
Very strange...I have just tested this same video on YouTube, blacks are truely blacks. I'm not able to see the difference with borders of the pad.

Update is exactly the same than Greenflash_24's...can't understandl
[Lenovo P11] longxa762:
Are you sure it's running HDR and not normal? For me normal vids true black is working but any videos with HDR will brighten the vids up and turn true black to grey.

Maybe it's also due to some setting or something that over brighten up HDR, I'm leaving everything default though (Vibrant, Standard and 120hz). Might try to reset to factory later to see if it will work.

Found this thread below on Google having the same issues with another tablet from Lenovo and doesn't seems there is a fix.

English Community-Lenovo Community
[Lenovo P11] ZhenMing:
Sorry to deviate for a bit.

There was report of overcharging of our tablet. Which in summary means eventhough the tablet is full charged, and sleep, it will still draw 8W of power from the power adapter.

The worst part is, Lenovo able to duplicate that too. They are requesting the the person to CN forum for the advice and solution. Which means they don't have the solution.

The reference forum from lenovo is here.

How do we do the test? If we are facing it, shall feedback this from the tablet so that Lenovo acknowledge the issue and fix by next update?
[Lenovo P11] Plumplum88:
I forced 2160 HDR on YouTube
[Lenovo P11] Plumplum88:
Is it on both SD870/K1300T versions?

I think you must have matériel to check (plug with built-in wattmeter)
[Lenovo P11] ZhenMing:
It doesn't mention on which variant is affected. The reference to the Chinese Forum is useless as there wasn't much information. Signing in is a disasterous as it return with empty page. I could not get more information from the Chinese Forum.
[Lenovo P11] greenflash_24:
I have tested my tablet for the overcharging issue, and i can confirm that it is also affected.

After it has reached 100% it continues to draw (in my case 11.4W) from the wall, which is way to much for the processor allown while being idle (disply was turned off).

As i have mentioned in a previous post, i do have the German version of the Mediatek 1300T variant with 8/256GB storage.
[Lenovo P11] ZhenMing:
We shall test this in our tablet and do the feedback. The more the merrier. So that they don't take this lightly.

Agreed?
[Lenovo P11] ZhenMing:
According to the post in the Lenovo forum, the person is just using the Ampere app to test and check. I'm doing it now to confirm if mine is also affected. I would recommend you to do so too.

If you are confirm you had that issue, do feedback here and (important) feedback to Lenovo using the feedback feature within your tablet.
[Lenovo P11] ZhenMing:
I do not know how I could check for the charging watt from Ampere, but the unlock screen did say charged, which the post there said it will say charging still even it was full charged..

Anyone could shade the light for us on how to check? Or you have a better app recommendation for this test?
[Lenovo P11] jeryll:
you need to check it with HW wattmeter, I have and will check later today and post results...
[Lenovo P11] greenflash_24:
My tablet did also indicate that it was fully charged and the lighting in the battery icon has disappeared.

But as it was still consuming power, it might be still charging.

I have tested this with an external wattmeter, which I can plug directly into the wall outlet. Then I plugged the charger which came in the box into my wattmeter.

Currently, I am not sure whether I want to do additional tests, as overcharging the battery definitely will harm it and I don't want to damage it any further. Also, there could be the risk of starting a fire.

Probably i will give Lenovo a call tomorrow if I have time.
[Lenovo P11] ZhenMing:
I don't have the watt meter available to test on my case. But the following is the Ampere app status, while the tablet is still plugin.

View attachment 5723007

It is time to stop charging it overnight.
[Lenovo P11] HSKalay:
I have the global Lenovo tab 11 pro Gen 2 (8gb 256) and I can confirm that the screen also looks like garbage in HDR (videos in Plex and YouTube) - washed out and grey areas that should be black. I just thought they used a cheap oled panel to cut costs. Would be AWESOME if they can fix this. Otherwise I may give this away or return it, buy a S8+ instead.
[Lenovo P11] jeryll:
do you have SD870 in tablet? china or eu/global version? I have report that SD870 8gb/128gb china version don't have this HDR bug...
[Lenovo P11] inasense:
Unfortunately only the P12 Pro's keyboard has the ability to function while detached from the tablet. I have the P11 Pro with keyboard case, and the moment the magnetic connection is lost it goes dead.
[Lenovo P11] jeryll:
- so, I did a few tests with battery charging on china TB132FU Mediatek 1300T model

- using unoriginal (not Lenovo) QC 3.0 certified charger (which is widely accepted by my other devices and charges them as quickly as possible) tablet ignore QC mode which results in normal - slow charging - taking around 5W

- using original included Lenovo charger tablet recognized charger (using unoriginal USB-C to USB-C cable) and enabled turbo charging - this time tablet takes 32W

- after tablet reached 100% shows "charged" and the consumption decreased from 32W to 11.6W - I checked back of the tablet with bare hand and found one place mildly warmer than the rest

- started the stopwatch and was willing to wait 1 hour before disconnecting the tablet from the charger...

- I checked warmer place on the back of the tablet twice during 15 minutes and it was evidently cooling down - while charger still shows 11.6W consumption...

- after 20-25 minutes consumption drops to 0W (when I waked the screen wattmeter showed 2.6W consumption and after I switched screen off with power button consumption dropped to 0W again - while plugged to charger)

- conclusion from my point of view - this is not a bug, it's a feature...
[Lenovo P11] HSKalay:
Heya,

No it's the mediatek 1300t version - EU/UK I guess! I'm in the UK and it was shipped from EU.
[Lenovo P11] ZhenMing:
That was a very detailed test. Appreciate your effort to test and confirm.

The last slow charging at 11.6w was to fill the battery with the last juice to really full charging it, which needs another 20-25mins.

Meaning the overnight charging is good to go... Hurray!!!!
[Lenovo P11] inasense:
I'm finding this tablet particularly picky about which charging blocks it will accept. Out of five chargers from Samsung, Dell, HP, Anker, and the OEM Lenovo block, only the Lenovo block charges above a very slow "trickle" rate, with the Samsung charger flat-out not working at all, incurring a constant connect/disconnect cycle. Very frustrating as USB-C is robbed of much of its versatility at that point...
[Lenovo P11] ZhenMing:
Could it be because it need a PD charger? Some of the type C charger wasn't in that standard. I'm using the Asus phone charger which carries 35w rating. But I could not confirm that rapid charging after full charge happen on this Asus charger, cause I do not have the watt meter with me.
[Lenovo P11] Plumplum88:
I think it's a bug...but not a small one.

Fast charging often works like that...

You've got full power up to 85/90% and then power decrease to protect the battery...

That's how it works on Warp Charge for exemple...last percents are far slower and température is hotter in the middle of the charge than at the end.

I think tablet isn't charged when it shows 100% but switched to slow charging...and need extra 20-25 minutes be fully charged.

100% shows the end of fast charge, when Power Unit Management switches to normal charge.

OS makes a confusion.

As I haven't tools, the only thing I can confirm yet is that temperature decreases when it reached 100%
[Lenovo P11] ZhenMing:
I managed to post the question in the Lenovo China Forum. The answer to the battery charging thing is normal. It will need about 30mins of additional charging time to really full charged the tablet.

Is it a bug or not, it will be depending on how you look at it.
[Lenovo P11] inasense:
It's a good thought but yes, both the Samsung & Anker are certified PD 3.0 chargers. I have a pair of Sony noise-cancelling headphones which are also picky with the charge source they'll take; I guess this tablet is similar. I hope it's just my unit afflicted...
[Lenovo P11] fippo7:
Just for info the china mediatek version has L1 certification enabled?
[Lenovo P11] ZhenMing:
Mind to share what is that?
[Lenovo P11] jeryll:
yes, mine show security level L1
[Lenovo P11] jeryll:
What is DRM Widevine L1?

Widevine L1: Widevine L1 is the highest degree of DRM protection, and video decryption and processing take place entirely within the Trusted Execution Environment in devices that support it (TEE). Widevine L1-certified devices can play videos at the best resolution possible.
[Lenovo P11] fippo7:
ty i'm thinking to take the tablet from giz top, its a very good deal
[Lenovo P11] jeryll:
I have my from giztop,com, and thinking about returning it, because all MediaTek 1300T powered tablets (of Lenovo Xiaoxin Pad Pro 2022) are currently suffering from broken HDR playback (this may, or may not be fixed in the future - you can't fix bad HW - reason for that bug is currently unknown)...

So - if you don't care about correct HDR playback, and you are from Europe and want it, contact me via PM, and we can talk - I have tablet cca 4-5 days ... it's a fantastic tablet otherwise, but my main reason for the purchase was watching HDR content on it - and I can't enjoy that, because its HDR playback is broken...

In any case - take SD870 version of Lenovo Xiaoxin Pad Pro 2022 - it's pricey, but HDR playback with it is reported OK
[Lenovo P11] greenflash_24:
I would think it is highly likely that this issue could be fixed via a firmware update.

In my latest testings, I have discovered that I can play HDR10 files just fine with MXPlayer (using HW decoder and not HW+ decoder in MXPlayer), currently, I do only have the HDR issue in YouTube. Also, the Youtube HDR issue is only in full screen, if I switch to Picture-in-Picture Mode HDR is also fine on YouTube. That's why I am thinking it has to be a software issue.
[Lenovo P11] fippo7:
in general imho hdr is useless in whatever device so not big deal for me(i mean for a decent hdr experience at least 1000$ monitor with proper calibration is needed and top quality panel) otherwise is just bull crap
[Lenovo P11] jeryll:
If you don't care about HDR playback, then you'll definitely enjoy this tablet... But beware of few things - Chinese version of Xiaoxin Pad Pro 2022 have only English/Chinese FW, Google Play Store is installed by the seller (so you'll not get sealed goods), if you do factory reset on tablet you'll lose Play Store and need to reinstall it by yourself, English translation of FW itself is sometimes very "interesting", so be prepared for that...
[Lenovo P11] fippo7:
hahha what you mean interesting? XD some miss translation?
[Lenovo P11] jeryll:
Well, they really tried very hard, It's really nothing serious, but sometimes you'll need to guess what are the translator wanting to tell by that phrase ...
[Lenovo P11] jeryll:
Let's hope you are right, and this device will not be abandoned from the Lenovo devs from the start ... I really do hope that this edition/"first batch" of the Lenovo XiaoXin Pad Pro 2022 with MediaTek 1300T SOC was not a sale of faulty hardware they had to get rid of to clear warehouses...
[Lenovo P11] Hanswurstistda:
Has anyone discovered a setting for the creation of user accounts at the xiaoxin? Does the P11 has these option?

I've bought it for the whole family but i need to disable some apps for the children and family link didn't work properly:(
[Lenovo P11] jeryll:
if you have Chinese version try to use "Study assistant" and limit usage in a way there ... or use apps from Play store, there are multiple options there... Lenovo ZUI 14 can't add multiple users (yet?)... If you have EU model, go to system, multiple users, add guest... etc.
[Lenovo P11] Hanswurstistda:
OK, looks like i'll have to wait till we can flash the xiaoxin to the P11.

The additional apps doesn't sound that good to me.

There is the option to create a personal "space" and lock some apps. Maybe i'll give this a try.

But thanks for your reply
[Lenovo P11] inasense:
Anyone with Chinese Mediatek version have PC Mode available? Instead I just have Study Assistant which, while useful, doesn't fulfill the same functionality. PC Mode was a big reason why I bought this tablet...
[Lenovo P11] jeryll:
this? app is there, but I have no clue how to activate it... there is something called Lenovo One, which might be what you looking for ... sorry no time to play with it today...
[Lenovo P11] Creater_ua:
There are two options on AliExpress when buying the Chinese version of the tablet (1300T 6/128). They flash to the global version or leave a sealed box with Chinese firmware. At first they said that the OTA update will not work in that global version, but now they say that it will, believe them that it is a real global firmware, or is it a crooked modification and it is better to take the original Chinese one? Advise me
[Lenovo P11] Hanswurstistda:
Looks like they found a way to install the P11 Rom.
[Lenovo P11] Creater_ua:
Do OTA Wi-Fi updates work?
[Lenovo P11] Hanswurstistda:
Sorry, no Idea. I've just found the mentioned offer at AliExpress and the picture of the settings.

Maybe someone is interested in contacting the seller?

https://a.aliexpress.com/_Exno9B9
[Lenovo P11] inasense:
Yes, PC Mode desktop. I do not have this app on my unit, which is very strange. You should be able to enable it from the menu and also from notification bar - it reorganizes the launcher to be more akin to a Linux or Windows desktop, similar to Samsung Dex. Lenovo One is a separate program which is also useful but unrelated. Thank you for checking.
[Lenovo P11] Creater_ua:
I have already contacted sellers on AliExpress, and judging by their responses, they are not to be trusted. The one who is simply engaged in trade writes, not the one who flashes these tablets. Perhaps it is better to take a pure Chinese, there is an English language and the ability to install Google Play yourself. However, some people believe that there is some kind of censorship and restrictions on use
[Lenovo P11] fippo7:
moreover it would be interesting to know where they pick the fw and if they use same method used for the previous Pro pad, just for curiosity
[Lenovo P11] AbleBland:
Can i open the Bootloader to make my China rom to global rom with Lenovo upset EXE
[Lenovo P11] daybreak7456:
I have seen aliexpress. There were several shops describing the xiaoxin pad pro 2022 as a global ROM. I asked two questions to the shops and only got one answer. I don't know if I can trust them.

But if I want to revive my xiaoxin pad pro 2022 that has become unbootable, is it possible to buy this globalised ROM, suck out the ROM somehow and apply it? I am not familiar with the mediatek tool. (USB debugging and OEM lock are not turned on, so it's hopeless...)

And does the aliexpress vendor buy the information and tools to be able to convert to global roms from somewhere? Does anyone have any information to share?
[Lenovo P11] ZhenMing:
If you are in China ROM, the ZUI 14 had officially removed the PC Mode from itself. The PC mode will only displaced on external display through Type C output. During the, the internal display will still be normal mode.
[Lenovo P11] empty.cad:
did Your device unlocked bootloader ?
[Lenovo P11] longxa762:
View attachment 5734137

Anyone lucky enough to get the test OTA update can confirm this fixed the HDR issue?
[Lenovo P11] Hanswurstistda:
Sorry, no. Is it mentioned in the text? (My chinese isn't that good :-))
[Lenovo P11] longxa762:
The 2nd from the top down say "Optimize HDR Display"
[Lenovo P11] jeryll:
Google translate :) OTA update ZUI 14.0.630

- Optimized system stability
- Optimized HDR display effect
- Optimized some third-party charger charging problems
- Fixed some third-party application horizontal screen adaptation problems

- Fixed the problem that more than 60% of the battery was not charged after the battery saver mode was turned off
- Fixed the problem that the JD.com app could not be exited by swiping right
- Fixed the problem that occasionally the application could not swipe up in the horizontal screen scene, and the vertical screen can only exit
- Fixed the problem that the other party's view screen rotates 90 degrees in a specific scene during a WeChat video call
- Fixed the Classin software when entering the classroom or study room in horizontal screen
- Fixed the problem of not being displayed in full screen when Uncle Kai told the story half of the page stayed on the desktop and did not disappear until the parallel window was closed

- lets hope that "Optimized HDR playback display effect" means in reality FIXED HDR playback
[Lenovo P11] ZhenMing:
SD870 variance hasn't got any luck for update. Yet... But, I'm already on 14.0.625
[Lenovo P11] longxa762:
Sina Visitor System

According to the official Weibo post I think you can update from 14-16 Oct starting at 10am CN Time for a limited quantity? Someone should try and see if HDR is fixed
[Lenovo P11] ZhenMing:
If your tablet is in China ROM, you can follow this steps to enable the Google Play Services.
[Lenovo P11] ZhenMing:
Oct 17 onwards will be publicly push for update.View attachment 5737675
[Lenovo P11] Hanswurstistda:
Not available for me so far.

Hast anyone else received the update?
[Lenovo P11] ZhenMing:
Maybe wait for a bit longer. Keep trying the System Update every now and then.
[Lenovo P11] longxa762:
Got the OTA ZUI 14.0.630 update (Have to VPN to CN then turn if off once download start), can confirm that HDR is fixed. True Black is properly show now and no more Grey. Tested with multiple players and Youtube.

Edit: Before and after OTA

Spoiler content hidden.
[Lenovo P11] wike.aj:
what VPN app did you use to get to Chinese server?
[Lenovo P11] longxa762:
海归加速器-China VPN回国加速器海外解锁限制华人必备 - Apps on Google Play

The NO.1China VPN for overseas Chinese, fast and secure

play.google.com

It's just some random VPN on play store, I think any will do the trick as long as it change your IP to CN
[Lenovo P11] thegenius1104:
Can anyone confirm if this tablet has the same grey uniformity problem as the Xiaoxin Pad Pro 2021?

Context: The grey background looks dirty with patches when using with low brightness.
[Lenovo P11] thegenius1104:
Here is another pic of the uniformity problem from the 2021 ver:

The black is good but the grey is dirty. This appears in dark mode and brightness <30% but won't appear in black AMOLED mode.
[Lenovo P11] ZhenMing:
You are not alone. The following will be mine.

View attachment 5738487

Of cause this is only happen when you are in extreme darkness and lowest brightness of the screen.
[Lenovo P11] thegenius1104:
That sucks then as I often watch movies at night in a dark bedroom. But if you don't use it with low brightness then it's the best value tablet for Android and emulation. I kinda hoped the 2022 one will come with a Dimensity 8100/9000 chipset but I guess we have to wait more.
[Lenovo P11] jeryll:
If you switch DC backlight OFF, is it better, or the same?
[Lenovo P11] ZhenMing:
It is better when DC backlight OFF. but the red patch is still pretty visible. It affects video viewing and anything that is dark, will have that red patch.
[Lenovo P11] greenflash_24:
Isn't the Dimensity 1300T from the 2022 version practicly the same as the Dimensity 8100, as both using 4x A78 + 4x A55 cores (just with some frquency tuning)?
[Lenovo P11] ZhenMing:
I posted this question with screenshot to the Lenovo Chinese Forum. They suggest to send in for checking. Too bad it is too far for me to send to China to do the inspection and test.
[Lenovo P11] jeryll:
Don't you have warranty on your device? Take it (or send the photos of the screen along with comments from Lenovo) to the seller and ask for a replacement.

I just hope the people from giztop.com will send me SD870 version with better screen with no such faults...
[Lenovo P11] ZhenMing:
If there are more reported here. I think the request to get a replacement will not help much.
[Lenovo P11] wike.aj:
Mine is mediatek one. I dont have red patches, but grey in lowest brightness looks very weird and not uniform. It gets to uniform state at around 20% brightness
[Lenovo P11] thegenius1104:
To my knowledge, the 1300T is on par with the SD870 while the Dimensity 8100 is 35% stronger than the 870 in 3DMark (according to Nanoreview).
[Lenovo P11] Plumplum88:
Kompanio 1300T is based on Dimensity 1100/1200 with some extra features related to tablet :

- CPU used the same frequencies as Dimensity 1100

- GPU used frequencies closer to 1200 (836Mhz vs 850Mhz). It's a 9 cores Mali G77

- extra features are internal QHD screen support (Dimensity 1100 and 1200 are limited to FullHD+) and external screen support

- it's 6nm process like Dimensity 1100/1200

As I use a phone with Dimensity 1200 (Nord 2), I can't see any praticable difference with Kompanio 1300T.

Dimensity 8500 is a 5nm soc with newest and more powerfull GPU. It's a 6 cores G610...these newer cores are more powerfull (about twice the performances). You can estimate power is like a 12 cores G77...
[Lenovo P11] ZhenMing:
I had done the feedback to Lenovo on this screen issue. If you had that, you are advisable to do that too, so that they are aware it was a hw major problem.
[Lenovo P11] Ponchh:
Hello guys,

I am thinking of buying Lenovo Xiaoxin pad pro 2022, but i have some questions

On Giztop the MT 1300t with 6 gb ram is 300€ and the one with Sd870 is 400€, is it worth getting the one with SD870?

Do both versions suffer from broken HDR? Did the new update fix the HDR problem?
[Lenovo P11] ZhenMing:
SD870 do not experience the HDR issue and the 1300T was resolved from the latest OTA update.

SD870 had 8GB RAM and 1300T had 6GB.

China reviewer said the SD870 support true 10bit color reproduction and 1300T by HW limitation, only support 8bit. However, you might not notice the different with untrained eye.

The above are the different I understand and notice. The decision is yours.

By logic, the SD870 should had more online reference and resources for custom ROM. If you had a plan to unlock BL and use custom ROM in the future.