yashsingh1/xdaforums huggingface dataset:
[Android General] lucasmansilla101:
hello my slate 21 is & ntilde; or the software I did the reset but it does not turn on .. they will have a rom or the system to install it

hola mi slate 21 se daño el software hice el reset pero no enciende .. tendran una rom o el sistema para instalarlo

---------- Post added at 09:51 AM ---------- Previous post was at 08:52 AM ----------

hola nececito el soware para la slate21 ya que mi pc no quiere prender se queda en el logo puse el modo reset y no funciona tampoco
[Android General] Adrian4uPL:
Hello Quaesar,

I have Slate 21 s100, but there is big problem. It seems that this HP has no system or bootloader at all, after HP/Android logo, info appearing "Booting failed", then just "FAST BOOT MODE" - but doesn't matter if I choose Recovery Mode or Restart Bootloader, it returns to this screen.

How to install system?
[Android General] riaclark:
Was m-12.1-20160109-UNOFFICIAL-phobos stable?

Dear Sibseb, if you are still looking at this forum I hope you can advise me. I have two HP Slate 21 bought in 2013 with the 4.4.2 operating system on it. Various google services are now failing, and my work around is to use ES TaskManger to kill everything as soon as I have booted, which is a real pain. I was very pleased to find Quaesar's development work done some years ago, and as I am now retired I thought I would have a go at doing your upgrade in the hope of extending the life of the tablet for a couple more years.

My query is that last postings seemed to have many, many problems, and I you produced a very positive post, about using Slate 21 as a RDP thin client to Windows. It would be very helpful to know what was the last release you installed - was it m-12.1-20160109-UNOFFICIAL-phobos? Had the issues with the camera etc. been ironed out. I did try to contact Quaesar but I guess he has moved on to other things now. Ironically on tech radar I read HP are promoting a thin client thumb drive which can be used on legacy equipment, but it doesn't seem to include Slate 21.
[Android General] evildog1:
2 years ago I had contact with Quaesar. He said he was working with RemixOS rom and Oreo go.

I got a hand of beta version of RemixOS ROM and seems working and smooth. Problem was Wi-Fi and Bluetooth wasn't working

But seems the project was stopped. I haven't talked to him for long time

Here is the test ROM if you are interested https://www.androidfilehost.com/?fid=8889791610682892976
[Android General] zack1455:
Hi evildog1, when I try to flash the RemixOS test ROM you provided, I get the error "mount: failed to mount /dev/block/platform/sdhci-tegra/by-name/APP at /system: Device or resource busy". Am I doing anything wrong? I tried to flashed it just like the CM 12.1 ROM.
[Android General] evildog1:
I don't really remember. I think it went straight forward when i flashed it. Make sure the model is excatly HP Slate 21 and not HP Slate 21 Pro
[Android General] riaclark:
Dear Evildog1 - thank you very much for responding and for the download. At the moment the slate21 is sitting in my shed so I have little to lose by trying it out.
[Android General] zack1455:
I'm pretty sure that I have a HP Slate 21 :silly:. Was anyone else able to flash RemixOS?
[Android General] NvMint:
Issues with the Rom

Dear quaesar,

I loved your rom, and i was especting that it will save my slate 21, it worked good on the native apps.

But all the playstore apps that i have downloaded, are not working.

Games don't open, apps crash, Lag, even spotify stop working.

all that apps were working on the stock rom and on your are not working.

I really appreciate your job, do you have any advice or even the stock hp rom for me?

I'm really need!
[Android General] evildog1:
Guys, I tried to install RemixOS again and it works for me. I think you must wipe system partition first. I just wiped all except sdcard since i don't have important data in it

Ethernet with manual configuration works. Auto doesn't work.

To setup manually, you must understand how local network works. I won't be explaining here but there are enough info on Google

You can use ipconfig on your computer or use Fing app on your Android/iOS device to get info about your local network

If you have many devices connected and not sure if an IP is taken, give it with a higher number. Example if my gateway is 192.168.1.1, and IP starts with 192.168.1.100, i gave it 192.168.1.150.

You don't need to fill up DNS

If you forgot that it has ethernet port, it's on the back side. I totally forgot it until now XD

Again, here is the download link to the ROM: https://androidfilehost.com/?fid=8889791610682892976

I still won't be use it as daily basis, i'll probably giving it away to my friends. You can enjoy playing around with RemixOS :)
[Android General] Malindu1990:
I wiped data and recovery.guide me to flash those two..im stack on fastboot.no recovery or os
[Android General] zack1455:
You can find the stock ROM here
[Android General] zack1455:
In case anybody else comes across the same problem, turns out the System partition doesn't get mounted by default. Manually mounting it before wiping it and flashing the ROM solves the problem!
[Android General] Rootkillll:
excelente funciona de 10!

lo unico que o me funcionó en la slate 21 es la camarita , que cuando intento abrirla dice, la aplicación se cerro., pero el resto todo de 10! _

excelente muchas gracias por el aporte
[Android General] NvMint:
quaesar please help ...

this rom made it impossible to use my Slate 21, I download anything from the app store and the PC keeps restarting, please, do you have any tutorials for me to go back to HP stock rom? please, i know you are not responsible, but i lost my pc, can you help me?
[Android General] Gean cristhian:
Alguém poderia me disponibilizar o driver do Hp slate 21 para Windows 7? Não consegui achar no site da hp
[Android General] ibrahim monem:
i need Fastboot Drivers working for HP Slate 21 (s100
[Android General] TECHNICAL COMPUTING:
please make a more up to date (7.1? maybe?) for the hp slate pro please!!!
[Android General] TECHNICAL COMPUTING:
use m-maidlive environment if you don't want to have a permanent install of linux
[Android General] sprucecello125:
Long time since the development of this ROM has been abbandoned and it still works, but:

I can't install Magisk into this thing (the reason why I want to do this is because I need zRAM Swap)

Camera still doesn't work, although Microphone works

Seems like I can't find any app that allows me to execute shell commands by pressing a key (this is required for brightness control)

The UI is glitchy (open-source driver issue?)

All the apps installed outside Play Store works perfectly (except for resource-hogging apps/games ofc), and by adding 1GB Swap file, I can open more apps/browser tabs, but the more apps/browser tabs you open, this PC will hang (because the eMMC flash is slower than my home server hard disk)
[Android General] lewmur:
Installing ROM

My Slate is already rooted and TWRP 2.8 installed. Can I go directly to installing the ROM or must I first change to your TWRP version?

---------- Post added at 02:14 PM ---------- Previous post was at 01:41 PM ----------

A "security feature" of Lollipop is that it won't allow "3rd party apps" to write to the SD card. But there is an app in Play Store called SDFix that allows you to change that function. Have you tried that.
[Android General] Quaesar:
Change to my version of TWRP. It's more recommended and up to date so things won't go awry when you flash. Be sure to make a backup before performing any modifications!
[Android General] Quaesar:
Announcement: The Play Store listing some apps as incompatible was just a false alarm. I reverted to stock and checked with the same app if it was compatible or not. Turns out the developer set it to incompatible in Google Play. Again, just a false alarm, an APK install of that same app would probably end up working anyway.

If you have any questions let me know.

Peace,

Quaesar
[Android General] Triko26:
Great job !

Thank you for your work, it is very appreciated. I just flash your ROM and it works pretty well.

:good:
[Android General] Quaesar:
No problem! I should be able to get the browser issue fixed soon. I know whats causing it and now I just have to find a fix!

Peace,

Quaesar
[Android General] Quaesar:
News update

After pouring over literally zillions of lines of debug, I found the problem which was causing other browsers to not work. Turns out that those browsers could not render the websites because they could not access the GPU. I suspect this is because of missing proprietary drivers but will confirm and test it out this weekend. Looking forward to seeing this fixed!

Peace,

Quaesar
[Android General] Simply_S:
Have been running it for a few days now and generally happy. Apart from the known issues, I have encountered two others :

- Slate freezes when not used for a while. Doesn't react to screen nor to buttons. Only a hard reset (pull the plug) brings it back to life. Maybe something wrong in settings but I can't think what

- My Logitech K400R keyboard isn't recognised. Worked great with stock, nothing to do, just recognised straight away, but here it's not even detected. Pity but I can live with it. Just thought I should let you know

Thanks again for your efforts
[Android General] Quaesar:
Thanks! I actually haven't kept my Slate plugged in long enough to figure that out. I usually just shut it down and/or unplug it but good to know. About your keyboard, does it work on a computer. Does the Slate prompt you/even recognize it?

Peace,

Quaesar
[Android General] Simply_S:
The keyboard does work on a compuiter, and on a Raspberry Pi. The Slate doesn't prompt at all or give any indication that it has recognised the device.

On stock, it just appeared in the input methods, nothing had to be done.

Looking forward to the brower issue being fixed, and curious to know if anyone else has the freeze issue
[Android General] Quaesar:
Interesting. I use a keyboard different from the stock one and it works perfectly.
[Android General] Simply_S:
Can you tell me which one ? Not against changing :)

Any updates on a new release ?
[Android General] Quaesar:
Which one what? I'm sorry I'm not following you haha. Could you elaborate a little :confused:

I messed with proprietary drivers last weekend and started a new build. Unfortunately I corrupted a portion of my CM source which repo sync wouldn't fix. This weekend I have to redownload the source (which is freakin' massive) then start compiling. If nothing screws up I should have the browser issue fixed :laugh:

If the build is stable and actually fixed the issue then I'll upload it and make an announcement here!

Thanks for keeping me going by showing your interest! You have no idea how much it motivates me!
[Android General] Simply_S:
I meant which keyboard are you using.

Looking forward to the new release
[Android General] sarimtahir:
THX I really wanted to get a new rom for my slate 21 not only cuz its lollipop but when i got the slate it was chinese version so there were no gapps and playstore wasnt working but his really helped a few bugs though mic and camera dont work anymore
[Android General] Quaesar:
Oh haha. I am using a Genius GK-100011. My friend was going to throw it out but I took it from him instead. I know nothing about the keyboard other than it's completely standard (Basically plug and play with any device I've seen).

No problem buddy. Microphone should be working however I know camera doesn't work. Try the microphone on Google Now or something like that it should work.

The ROM is still a WIP so check back weekly because I might post updates or announcements that probably are useful for you! Also you don't have to quote my entire post :D if you just use the quick reply I'll still get back to you.

To everybody else monitoring this thread: Unfortunately I had some internet issues which forced me to wait a while before downloading the CM source. As I type this right now I am downloading it again. Hopefully I'll have it all downloaded soon. If it downloads fast I might be able to create a build today, otherwise by next week.

Thanks for supporting me!

Peace,

Quaesar
[Android General] Simply_S:
Thx

Played around with it a bit again yesterday without success. I wondered whether the issue was due to USB settings (MTP, PTP). To my surprise, in the Storage menu, the only option available is to turn USB connectivity off. In addition, in the list of storage devices, USB is listed three times, despite the fact that there is actually no USB storage attached (just my keyboard dongle)

Any idea what I could do to correct this ?
[Android General] continua.mente:
how is this rom? It is more fluid than stock? worth risking brick or void warranty to install it?

Inviato dal mio Slate 21 utilizzando Tapatalk
[Android General] Quaesar:
I have no clue honestly. All keyboards I try with my Slate are perfectly recognized so I can't even mess around with something that replicates your issue. Try to make some logs of you plugging it in, typing some stuff, then plugging it out. That might give me something to look at which has good information. If I have time this weekend I'll look into it otherwise next weekend.

I find the version of the ROM posted to be quite stable and quite suitable for daily use. I'll try to answer a few concerns you may have:

Q1. What do I do if I don't like it A: Create a full backup of your device currently using my TWRP before making any modifications. You can restore back easily then. Keep the backup on external storage.

Q2: Will this brick my device? A: 99/100 times no. It's honestly ridiculously hard to actually brick your device in a permanent way. If you follow the steps exactly word-for-word you shouldn't have to worry about bricking. If anything unwanted does happen however, post here and we'll help you sort it out. Shoudn't be that hard.

Q3: Will this void my warranty? A: (Like any other ROM) it will destroy your warranty, that doesn't mean that you can't get it back however. Simply flash your backup, replace the recovery with stock, then lock your bootloader and viola! Back in warranty!

In my opinion the ROM is faster than the stock firmware because it doesn't have a bunch of bloatware holding it down. Look at the bugs/known issues sections and if you're all good then flash away! I also expect the non-stock browser issue to be fixed this weekend because I think I know what to do.

News:

Turns out I used to wrong blobs while creating the build this weekend. I'll replace the broken ones with new ones so it should work perfectly. Check on Sunday/Monday for a new flashable zip (hopefully)!!!!

Peace,

Quaesar
[Android General] continua.mente:
my English is not very good so sometimes I have trouble understanding all the posts.

My HP Slate 21 is completely stock: To install this rom what steps should I do? Install the recovery following this guide

http://xdaforums.com/showthread.php?p=62810276

[RECOVERY] [UNOFFICIAL] [Phobos] TWRP 2.8.7.0 for the HP Slate 21

or should I do first other steps?

there is a guide to eventually restore the device and return warranty?
[Android General] Simply_S:
Had a bit of time yesterday so decided to start afresh. Did a full wipe and tried to reinstall the ROM. To my surprise, it was far more difficult than the first time. Duringthe setup process, all sorts of apps were crashing

Tried several times and once I finally got it back to where I wanted it, the issue persisted.

Have now gone back to rooted stock and will wait for the new version to be available (and yes, my keyboard is working although I had to fiddle a bit. Maybe it'll behave better with the new ROM)

Looking forward to it
[Android General] Quaesar:
Weird again. I've wiped, flashed a gazillion times with no problem. More stuff for me to look into... Yay!!!!! What do you mean by fiddle a bit? That might give me some pointers on how to fix it in the ROM before I mass test keyboard hardware from wherever I can find.

I might be able to compile the ROM tomorrow just as a heads up!
[Android General] Quaesar:
Yes first install the recovery. then you can flash the ROM. There is no guide to restore the device to it's original state but it's really easy. The steps generally go like this:

1. Restore from TWRP backup on SD Card

2. Fastboot flash the original recovery image

3. Relock bootloader

That should get you back your warranty. Let me know if you still have any questions.

Peace,

Quaesar
[Android General] Simply_S:
Fiddle a bit : switch Bluetooth on/off, remove dongle, change USB ports for dongle, remove batteries from the keyboard etc etc

As udual, when proceeding like this, it is impossible to say what made the difference as it may have been a combination of things. Wouldn't worry about it. I'll give it another try with the new ROM
[Android General] sarimtahir:
could please fix the issue that lan or ethernet connection no longer works and while uploading photos to dropbox it says cannot upload right now battery is low and will you be uploading cm 13.0 for slate 21
[Android General] Quaesar:
So is your keyboard wireless? I've only tested wired keyboards so that may be the issue.

Battery should have been completely disabled so it doesn't make sense for Dropbox to say that. I'll check my source tree for errors. Ethernet has always worked with this ROM. Check your wires and router it's connected to. I suspect the issue is there. Otherwise try out Wifi. CM 13.0 isn't stable right now. Just trying to compile will probably get me tons of errors. I'm going to wait until it stabilizes then I'll port it. Until then I'll work out issues in CM 12.1. Hopefully that should fix issues in CM 13.0 as well when I come around to porting.

Peace,

Quaesar
[Android General] blackbird555:
any updates about the new rom
[Android General] Quaesar:
I'm carefully merging proprietary blobs right now. I have to test them to make sure that one does not cause other issues. I will most likely build in a couple of days.

Peace,

Quaesar
[Android General] blackbird555:
Cool , looking forward to it, 2 things to rectify are standby lock up issue and chrome browser problem , keep up the good work.
[Android General] Julioflo:
hello I write through translator I am in Peru and want to know if this rom has the Spanish language so that it can install hope your answer
[Android General] rpalazue:
Yes is in spanish to!

Un abrazo!
[Android General] blackbird555:
Any updates Quaesar
[Android General] Quaesar:
Haha I wish! Same story again. Nothing really got fixed with the build. If anything it may have been a bit less stable. I'll try again soon with all blobs purely from the Slate. No more stealing for this round!

Thanks for showing your interest!

Peace,

Quaesar
[Android General] idontreally:
MAC address woes?

Running perfectly besides the aforementioned issues. However, I noticed that after every single reboot, my slate shows up in my router using a brand new MAC address, and thus a brand new IP as well. Seems random, not just an incremental change either. Connected via Ethernet, and running the 20150921 build. This isn't the most important thing to fix, but it would be nice for those who rely on those on the slate having a static IP.
[Android General] Quaesar:
I'll look into that. May have to do with kernel stuff. Can you see if this is a problem on the stock version of Android that came with the Slate? If you do please report back to me with the results.

Peace,

Quaesar
[Android General] Quaesar:
Cyanogenmod 13.0

I figured many people would be wondering about this so I might as well explain this now. There are official CM13 ports for devices out now and you may be wondering whether or not I am building CM13 for our Slate. Unfortunately there are issues with the Tegra 4 chipset (which the phobos uses) related to booting. Tegra 4 developers have reported success in booting CM13 but none have been able to make it past the booting screen. This is because an integral process crashes which results in the Tegra 4 device being unable to boot. Until our group of Tegra 4 developers can get past this it is futile for me to try to build CM13 myself. In the meantime I'll continue to try to sort out issues with the phobos. It may seem like I don't do much work but I pretty much dedicate the entirety of my weekend to fixing issues. Most of my efforts turn out to be fruitless. I'll acknowledge that it has been a couple months since I released an update to the ROM. If you guys want, I can compile again using the latest sources and using the tree used in the current public build. This will make it so some bugs (which were part of the CM code at that time will be fixed). Let me know if this is what you guys want. Just post in the comments to let me know. I also wont be able to work on the device much for a large portion of December and a little bit of January (in case you don't see me on replying that often).

Thanks for your continued support and enthusiasm!

Peace,

Quaesar
[Android General] robinla:
Support

Hi Quaesar-

I'm looking forward to a ROM that fixes the camera. I will definitely install that on my Slate 21. Thank you for all your work on this!

R-
[Android General] no0dles:
Hi Quaesar,

I'd like a new build but I ashamed to say I didn't install last one. Brightness control is important to me and I'm reluctant to miss it. Maybe I'm wrong and a trick can adjust brightness.

Anyway, I greatly appreciate your efforts.
[Android General] szoniu:
Hello Everybody!

Guys, what version of Gapps did you use? I have a problem with adding a Google Account.

When I want to add an account I get the message: Unfortunately, Google Play services stopped working.

also you have such a problem...?

Sorry for my bad English.

Thanks for your response
[Android General] Quaesar:
Thanks! Hopefully it shouldn't take too long.

Don't worry, you can still change brightness in the ROM but not using the buttons. You have to take more of a manual approach to it ;) . Here's the "trick" you wanted:

- Make sure you are rooted (SuperSU preferred)

- Open a terminal emulator (this can be the built in CM one or your favourite from the Play Store

- Elevate yourself to root using the command

su

and then allow when the SuperSU popup comes

- Run the following command:

echo XXX > /sys/class/backlight/pwm-backlight/brightness

Replace "XXX" with the brightness level you want (1<=XXX<=255). The range of values that you can input are, 1 to 255. 1 being the lowest (darkest) and 255 being the brightest.

Make sure to back up your device before flashing my ROM in case you want to switch back. Let me know if you have any questions. It may seem ridiculously hard at first but it's actually really easy. As long as you have a backup, nothing really can go wrong.

Happy flashing!

GApps 5.1.1 should do the trick. I got my GApps from here: https://www.androidfilehost.com/?fid=96039337900114811

Flash GApps while flashing the ROM in this order:

- ROM

- GApps

- SuperSU (optional)

That should fix any issues you may be having. Be sure to wipe before flashing as well.

Peace,

Quaesar
[Android General] ckbaw:
Thank you very much. I'd be waiting for your new version of ROM, just to let you know that there are still ppl out there appreciating your work. Great job!
[Android General] szoniu:
Thanks !!!
[Android General] Henkeman0:
Hi!

I have been waiting for so long to root my old Slate 21 (k100) and now finaly thanks to you Quaesar I could flash your rom! Thank you for your awesome work!!

But I have a little question. On the home screen with stock rom it was possible to use the whole screen for widgets and icons. Now I can only use the middle part. Is there a way to change this?
[Android General] Henkeman0:
Forget this! I solved it by installing apex aluncher :)

Only troubble now is that after about 20-30 min of streaming spotify to a bluetooth-reciever the "bluetooth sharing" force closes so I have to reboot the Slate to get it going again. But this might be because of the low memory in the old k100? Spotify is a memory hogging piece of software. :(