yashsingh1/xdaforums huggingface dataset:
[8.9" Kindle Fire HD Android Development] oernst:
black screen

unfortunately I cannot see anything on the black screen - not even in complete darkness.

used twrp console to CAT and ECHO values into the brightness files (something like /sys/devices/platform/backlight/bowser - I do not remember the whole thing), but they were already at 254, so 255 did not do a thing. I found a site for another device, where they assume it is a permission problem of TWRP while flashing... testing new twrp 2.8.7.0 asap

I flashed back an image from late july and got the annoying play services crash loop... in this case try do deactivate play services, remove updates, remove updates from play store app, reactivate play services and reboot... if CM doesn't allow you to deactivate play services, deactivate the device manager (security tab) first. if this doesn't work, wipe caches and redo procedure... unlike in the productforums regarding a nexus, I had to remove the play store updates as well.

greetz

Örnst
[8.9" Kindle Fire HD Android Development] jaramosp:
From my humble point of view, to use Cm 12.1 is a waste of time. Without gurus like Hashcode to correct bugs and enhance drivers, we have to manage a rom that becames a nightmare nightly after nightly. I returned to cm 11, not perfect, but less bugs and more stable. Hashcode solved many ot the problems, many problems remain unsolved.

All the problems I faced with cm 12.1 are no present in cm 11.
[8.9" Kindle Fire HD Android Development] omagic:
Thanks! I was having the same issue, black screen after updating to 0804. What I did was to install a july version, then increased the brightness to more than half, and then applied the latest update. Now everything is working! Don't forget to update gapps also.
[8.9" Kindle Fire HD Android Development] Nashbirne:
Fix for display gamma

I recently figured out that there's a major annoyance present in every Custom ROM for the KFHD since at least CM11: By default, display gamma and white level (

not

backlight brightness) is constantly changing based on screen content, which leads to ugly artifacts such as highlight clipping in mixed content images and indiscernible element borders in light themed UIs and many websites such as XDA. This behaviour is apparently caused by a built-in "feature" called CABC (content adaptive brightness control) and it is

not present

in the original stock ROM.

To stop the tampering with screen gamma, CABC can be turned off by

su
echo 0 > /sys/devices/platform/backlight/bowser/cabc_enable

Yet this is not persistent across reboots.

OP, would you mind to provide an option in the display settings UI or can you disable this by default? Thank you!
[8.9" Kindle Fire HD Android Development] oernst:
[MENTION=5949600]Nashbirne[/MENTION]:

do you now if this also affects the black screen problem in CM12.1? As I posted before, I echoed 255 into the brightness files, but no success :(

unfortunately my screen seems to be really at 0 brightness, because I can't see anything even in the dark... due to this I cannot find the brightness bar :p

regards,

Örnst
[8.9" Kindle Fire HD Android Development] nigelmercier:
Just updated using instructions form BobJayJr in this thread.

All seems fine, except the message Unfortunately Bluetooth Share has stopped comes up from time to time, although BT is turned off.
[8.9" Kindle Fire HD Android Development] Nashbirne:
I didn't check with the latest CM12.1 releases since I'm currently on Candy5 ROM, but from my experience, even at brightness 0 you should still see a dimly lit screen. Brightness control does not turn off the backlight.

You might check the output of

cat /sys/devices/platform/backlight/bowser/bl_power

to see if the backlight is off and echo 1 into it. Do you have external access to your KFHD via ADB debugging or ssh?
[8.9" Kindle Fire HD Android Development] monster1612:
That used to be the case (0 brightness still yielding a perfectly usable screen), but the recent updates made it so 0 brightness means you can't see the screen at all (however, I've been able to override the brightness by using the brightness slider feature in the statusbar, invisible as it is/was). Interesting fix, though - I think I may test it out.

---------- Post added at 10:12 PM ---------- Previous post was at 09:55 PM ----------

On the CM12.1 nightlies (at least, the 8/17 one), the file you're looking for is at "/sys/devices/platform/backlight/backlight/bowser/". However, while I was poking around in that folder, I noticed a brightness file. I ran "cat brightness", and it output 101. I'm thinking that a workaround to the issue would be typing this (one time should be fine, I think the setting will survive OTAs) into the TWRP terminal (I don't think the starting location would matter in this case).

echo 101 > /sys/devices/platform/backlight/backlight/bowser/brightness

I'll see what I can do about creating a flashable .zip to automate that fix. :)
[8.9" Kindle Fire HD Android Development] oernst:
thanks, will try both ways - power of the backlight and brightness value 101 ;)

already echoed 255 into brightness file, but no change
[8.9" Kindle Fire HD Android Development] nigelmercier:
Just installed cm-12.1-20150820-NIGHTLY-jem.zip but the "Unfortunately Bluetooth Share has stopped" problem persists. I'll try again in a few days. I don't seem to have a working Disable button for Bluetooth Share.
[8.9" Kindle Fire HD Android Development] oernst:
Ok, successfully got my screen working again:

Flashed late july cm12.1 and set the brightness to highest level. Then dirtyflashed newest build (17.08.2015) and screen did not turn black!

Also got another hint: when you put your brightness bar below half, it turns off - but this isn't the case if you turn off adaptive brightness in settings! Works normally after that. Unfortunately I did not find the file for adaptive brightness, so you could change it in TWRP console...

Regards

Örnst
[8.9" Kindle Fire HD Android Development] monster1612:
I tried setting it to 0 in TWRP, and the screen went dark instantly. I think that the file doesn't persist across reboots (i.e.: the setting you apply to that file only configures that setting until you reboot).
[8.9" Kindle Fire HD Android Development] nigelmercier:
Found this on CM forum.

Post #4: I think they have fixed it in the 20150527, take a look at the changelog. They reverted "bluedroid: Support dynamic A2DP stream parameters ...
[8.9" Kindle Fire HD Android Development] riesi:
Setting for adding users

Hi,

I just flashed the actual 12.1 nightly on my Kindle Fire HD 8.9, but it seems, but I cannot find the setting to add additiofonal users to the tablet. Where can I find it?

Thanks,

Riesi
[8.9" Kindle Fire HD Android Development] RedsonRising:
How is Bluetooth performing? Considering updating my wife's Kindle but she's got a Bluetooth Keyboard and would be pissed if she can't use it anymore.

Thanks
[8.9" Kindle Fire HD Android Development] ElPatron17:
Bluetooth doesn't seem to be working on the LTE model. Everything works great except that. I have both WiFi only and LTE and it works on the WiFi model.
[8.9" Kindle Fire HD Android Development] RedsonRising:
Hmm. Good news on Wifi. Bummer about LTE. Hopefully Hashcode (or someone) will find some time to fix that.
[8.9" Kindle Fire HD Android Development] ElPatron17:
I hope they find a fix for it soon. My aunt has bugging me for months about it. I personally use the WiFi model cuz that's where I have all my games.
[8.9" Kindle Fire HD Android Development] RedsonRising:
How has the performance and memory use been as nightlies have been coming out. On my HD7 I know it's better. Just curious if on the 8.9 it's performing better on CM 12 vs 11.
[8.9" Kindle Fire HD Android Development] ElPatron17:
Them seem pretty even to me. Not much of a difference. If I go more then like 2 days without rebooting my tablet then it does get a bit wonky at times, but that's about it. I just got used to the habit of rebooting it once a day.
[8.9" Kindle Fire HD Android Development] nigelmercier:
It's been a couple of months since I flashed this ROM. I notice that there are still nightly updates, but no other comments in here.

Is there a changelog, or should I just flash a newer version and try it?
[8.9" Kindle Fire HD Android Development] DamnRaL:
http://www.cmxlog.com/12.1/jem/
[8.9" Kindle Fire HD Android Development] DamnRaL:
I have no idea where to post or talk about bugs so I'll just put it here for now.

I have a problem with the status bar & the drag down menu.

When I use the brightness slider in the drag down menu from the status bar of starts freaking out & sometimes trebuchet will crash.

Then the status bar messes up even more if I star rotating the device.

http://imgur.com/a/0B45I
[8.9" Kindle Fire HD Android Development] ElPatron17:
That has happened to me as well. Not very often I might add. It's very rare on my unit.

On another note, There is no guest mode in this build. I've never needed it so I didn't know it wasn't there. Now that I do need it it's not coming an issue. Anyone know another ROM for this tablet that has guest mode?
[8.9" Kindle Fire HD Android Development] nigelmercier:
Just used a more recent nightly, and the problem remains. However, turning on Airplane Mode, then turning Wi-Fi back on seems to make it go away.
[8.9" Kindle Fire HD Android Development] secretsubscriber:
I am having the same issue.

The mouse pointer doesn't appear, but if I move the mouse around and click randomly, I do select items.

Also, when using my Bluetooth keyboard to navigate my app icons, the selected app is not highlighted, but the selection is occurring.
[8.9" Kindle Fire HD Android Development] tintolucci:
Congarts!

The old kindle is dead, vive le roi
[8.9" Kindle Fire HD Android Development] Moor Terces:
I'm still using this Kindle every day. I went back to CM 11 as it still works well. It will always have a spot in my heart after bricking it taking it apart soldering leads to the pin outs and forcing the OS back on haha. As of is with all tech support resources move to the new machines.
[8.9" Kindle Fire HD Android Development] ant17:
Any way to update to 12.1 and still have my apps and data?
[8.9" Kindle Fire HD Android Development] FireCulex:
I still use this every day with a Bluetooth Keyboard, with FireFox, Dropbox, Spotify, Cool Reader, Twitch, Destiny, Public Events for Destiny, Xbox one Smartglass, Warframe, Steam, KeePassDroid and Twitter.

This device doesn't have the greatest battery life so I turn off the device when not in use and charge it up daily.

Having to redo settings after updating is kind of annoying so I flash every 6 months or so.
[8.9" Kindle Fire HD Android Development] redhonker:
Is this thread dead? Any other 5.x ROM?

Thanks
[8.9" Kindle Fire HD Android Development] monster1612:
I think this thread is mostly silent. As for other ROMs, you could try Candy5 (which is built on 5.x sources). However, there's also a functional Resurrection Remix ROM port (built on 6.x sources) available. :)
[8.9" Kindle Fire HD Android Development] Moor Terces:
I have updated to this rom now and it is working well with the newest nightly. In fact it is now much better than 11. I had gone back to 11 for awhile due to some stability issues but it works great now. Only bummer is the performance menus are gone as I usually forced it up for some apps. The rumor is that we may see app specific tuning in the future.
[8.9" Kindle Fire HD Android Development] sullytrny:
I've recently found that setting the performance stuff in the cm11 versions to hotplug and noop really fixes a lot of stability and battery life problems. I'm going to retry some cm12 versions.

thanks
[8.9" Kindle Fire HD Android Development] gatalon:
I think the CM13 is better that CM12, more stable.
[8.9" Kindle Fire HD Android Development] sullytrny:
Which one are you on?
[8.9" Kindle Fire HD Android Development] gatalon:
follow this.

http://xdaforums.com/kindle-fire-hd/8-9-development/rom-marshmallow-t3315077
[8.9" Kindle Fire HD Android Development] Shack70:
That shows as a bad link for me. Also what's better about marshmallow? Thanks!
[8.9" Kindle Fire HD Android Development] gatalon:
You can find it here:

http://xdaforums.com/kindle-fire-hd/8-9-development

I think the biggest change is power management.
[8.9" Kindle Fire HD Android Development] green_reaper:
Sorry if i seem like im beating a dead horse here, but after updating to cm 12.1 i lost all root access. I tried the developer option which seems all but too good to be true and apparently it is, it did not work in the slightest. Root checker says i do not have root set properly and terminal does not allow root access.

NOTE: I am scared to flash Supersu because apparently for a great deal of people on cm 12.1 this leads to the "infamous boot loop" which i drastically want to avoid...

any advice guys? or just go completely rootless? any more setting i can toggle? or a way to flash root access without boot loop?
[8.9" Kindle Fire HD Android Development] BobJayJr:
I may have my platforms confused - it's been awhile but I have a vague memory ... On earlier versions of this ROM you could get root access in developer options by first turning root off, exiting developer options, reentering developer options and turning root on. Hope this works for you.
[8.9" Kindle Fire HD Android Development] green_reaper:
wow that actually worked lol

OMG i love you, why is this not common knowledge? lol someone please update the thread and sticky that lol
[8.9" Kindle Fire HD Android Development] monster1612:
That bootloop only occurs on ROMs running Marshmallow/6.x/CM13 and higher, and it only exists if you're flashing SuperSU directly from TWRP and haven't patched the SuperSU config file first. The patch only tells SuperSU to flash to /system instead of patching the boot image (the basis of the "systemless root" method you may have heard of).
[8.9" Kindle Fire HD Android Development] TechGuyYT:
Does this work on the Kindle Fire HD 6? If it does, I need to figure out how to get TWRP back on (I am already on a rooted Fire OS 5) and then get the ROM for this and flash it ;)
[8.9" Kindle Fire HD Android Development] jaramosparra:
No, It's only for Kindle Hd 8.9. If you use this rom on Hd 6, you will brick the kindle.
[8.9" Kindle Fire HD Android Development] braindead_rebel:
Is anyone able to get CF Lumen or f.lux to function correctly with this? I can't get either to run and I'd really like to since I use my KF HD 8.9 a lot in the late evening for reading. Any info or tips would be greatly appreciated, also, thanks for the rom and install guidelines!
[8.9" Kindle Fire HD Android Development] ConfuciusTse:
Looking for help getting Fastboot to see my Kindle Fire HD 8.9.

Picked up a refurb Kindle on Woot the other day and want to stick CM 12.1 on it. I'm no programmer but I've successfully followed directions to root and install CM on about a dozen devices over the years but this one has me stumped.

I'm running Windows 10 and have apparently successfully installed the Amazon USB driver. When the tablet is plugged in Device Manager shows "Fire Devices > Android Composite ADB Interface" and it reports "working properly." I made sure to install the driver with Windows driver signing OFF. I can do a command prompt "ADB devices" and I get back a single device which corresponds to the device Serial Number (when I disconnect the tablet, I get nothing). So it seems ADB can find the tablet. The tablet has "Enable ADB" set to ON. I have done nothing else with the tablet, no registration, nothing, it's direct from factory and seems to be working fine. Current system version is 8.4.3_user_4308820, I have not updated it from what it came with.

So everything looks good until I try to run fastboot. I punch in "fastboot -i 0x1949 getvar product" and get "waiting for device". I reboot the tablet and it just simply reboots like normal and brings up the lock screen. I can't get Fastboot to show. I've done a simple shut down/reboot, I've held the power button down for like 20 seconds and forced power off. I've also tried plugging into different USB ports and different USB cables. Still nothing, just "waiting for device".

Can anyone offer suggestions to get Fastboot to see this Kindle? Many thanks in advance!
[8.9" Kindle Fire HD Android Development] Pokeroo:
Do you have the 2nd bootloader installed?
[8.9" Kindle Fire HD Android Development] ConfuciusTse:
Err...no. I thought my first step is to get Fastboot to see the device before I can move on to anything else. Right?
[8.9" Kindle Fire HD Android Development] droidboy29:
Does anybody have the latest nightly or close to it? If so could you please post it because none of the download links on CM website are working.
[8.9" Kindle Fire HD Android Development] monster1612:
CM nightlies are no longer up because CyanogenMod was officially discontinued last month. At this point, however, it doesn't matter - CM hasn't built an official nightly for either of the 2nd gen HDs since October. I'll see what I can do about compiling a LineageOS 12.1 build, but it may not be as updated as Marshmallow or Nougat, even though those two haven't been fully working on the device yet.
[8.9" Kindle Fire HD Android Development] comwiz:
Ya apparently it's now LineageOS but they say it's really buggy. I am looking for a JEMLTE roms. And for some reason couldn't find one. :/
[8.9" Kindle Fire HD Android Development] lazygizmo:
is there anyway for me to update my kindle from cm-10.1-20130812-UNOFFICIAL-jem to something newer, because other roms that i try leave me in a reboot loop with twrp
[8.9" Kindle Fire HD Android Development] trosanelli:
I updated my Kindle from a similar version of cm to lineage OS. I had to install a more recent version of TWRP. but basically that was the only trick to install the new ROM.
[8.9" Kindle Fire HD Android Development] lazygizmo:
ok thanks, i just tried to update twrp using a tut from when i originally rooted and i got this error

C:\Users\kille\Downloads\KindleFireHD89Root\stuff>fastboot -i 0x1949 flash recovery recovery.img

target reported max download size of 1006632960 bytes

sending 'recovery' (9284 KB)...

OKAY [ 0.514s]

writing 'recovery'...

FAILED (remote: image too large for partition)

finished. total time: 0.526s
[8.9" Kindle Fire HD Android Development] lazygizmo:
got it fixed, i just redownloaded the file
[8.9" Kindle Fire HD Android Development] goranhashm:
link for rom not working
[8.9" Kindle Fire HD Android Development] escotorivera:
download link broken

can you please update the download links im trying to get the 5.xx rom im currently on 4.4.2 and will love to upgrade to marshmallow but i cant even find good links to download the roms
[8.9" Kindle Fire HD Android Development] SoNic67:
Can you post a link to your 4.4.2? It seems that's the last one with camera working.
[8.9" Kindle Fire HD Android Development] nguyenlucky:
http://cyanogenmod.org.ru/device/jem
[8.9" Kindle Fire HD Android Development] SoNic67:
Thanks, that worked, camera is back.
[8.9" Kindle Fire HD Android Development] Mohamad Serwan:
i went this rom https://xdaforums.com/showthread.php?t=2543481&page=34 but the link is broke

can you upload this rom for me :) :confused:
[8.9" Kindle Fire HD Android Development] SlimThePineapple:
I understand that this topic is mostly dead, but for those looking for a download link, you can find one here: https://archive.org/details/cmarchive_nighlies (you need cm-12.1-20161016-NIGHTLY-jem)

I've also reuploaded it to my dropbox just in case: https://www.dropbox.com/s/mvekcvnyxhh9kak/cm-12.1-20161016-NIGHTLY-jem.zip?dl=0
[8.9" Kindle Fire HD Android Development] ag346:
Are ROMS no longer being updated for the Kindle 7 Fire?
[8.9" Kindle Fire HD Android Development] llleonid:
Hi! How to Install Google OS? Chromium? ArnoldTheBat? FydeOS? CloudReady?
[8.9" Kindle Fire HD Android Development] kjozzed:
Can you make a step by step guide?

I haven't done anything ROM/root/recovery related since 2010... I need help going through this process.
[8.9" Kindle Fire HD Android Development] mak_v_:
device is dead?
[8.9" Kindle Fire HD Android Development] dcahoe:
I did a dirty flash of this unofficial CM12 over CM11 on my Fire HD 8.9 and it is working great. All of the apps I use have worked well except netflix which is listed as a known bug, but I just unistalled it and installed version 1.8.1 using an apk I downloaded and it works fine on CM12 (I used to have a nook hd which had this same solution).

The only issue which I am keeping an eye on is that charging seemed to be much slower than before, but I have only charged once so maybe it will be faster next time around??
[8.9" Kindle Fire HD Android Development] arctophile:
I decided to take the plunge today and very glad I did. Getting impatient in my old age so just dirty flashed it over CM11 M12.

Used PA Nano gapps to get Play Services, only other apps which didn't play nice were Drive and Youtube, but reinstalling them from the Play Store fixed that.

Whole thing is definitely smoother than kitkat. Didn't bother with f2fs, mainly coz I couldn't install TWRP 2.8.3.0 (zip error or somesuch).

I don't know where you find the time Hashcode, but thanks heaps for building this!

Query: Tried to use it for reading in bed (Zinio magazine) and discovered there's no expanded desktop in CM12. The bright white nav buttons are really distracting when the screen's dim - anyone know how to tone them down ( eg force them into dot mode like in a game)?

UPDATE 12 Jan: All good, GMD Immersive app can hide it temporarily, which is all I wanted. Could do it automatically and per-app if I paid for Pro version, but this one is still handy:

https://play.google.com/store/apps/details?id=com.gmd.immersive&hl=en

Also, my overview (task switching mode) just shows black tiles instead of previews for each app - anyone else getting that?
[8.9" Kindle Fire HD Android Development] Victorman86:
Any link for TWRP 2.8.3.0 ?

Upd: Sorry. I see the topic.
[8.9" Kindle Fire HD Android Development] tintolucci:
Well, not in the target, but KF 8.9 erased...

I just erased evry cashes on Kindle Fire 8.9" through TWRP :mad:

Now I can't copy Cyanomod files from my PS (8.1) to Kindle...

Any wat to just copy these two (CM12 +GAPPS) files to somewhare at internal storage?

Ohhh, thanks :)
[8.9" Kindle Fire HD Android Development] Broncos15:
How is the speed of this ROM? I had cm11 but went back to stock because it was sluggish, but I would like to give this a try
[8.9" Kindle Fire HD Android Development] dcahoe:
Yes, I get the same, just black tiles with the app names on top of them.

As an update to a previous post of mine, charging seems to be the same speed as before . For some reason the initial charge after installing this CM12 ROM took much longer than usual. And BTW, battery life also seems to be pretty much the same as before with CM11. I have not noticed any slower nor faster battery drainage than I have been used to.
[8.9" Kindle Fire HD Android Development] arctophile:
It's really excellent for an alpha - only slowdowns I've had so far are in the task switcher (which looks like a resource hog) and launching the AOSP browser. Having said that, I was pretty happy with the speed of KitKat by M12, so maybe you expect more....

Other thing is whenever CM11 got sluggish I'd run the fstrim command on /data and it'd make a big difference... Not sure whether same will apply in CM12.
[8.9" Kindle Fire HD Android Development] zavien3:
I think all the sluggishness is a problem with it's RAM. There is no reason from a CPU standpoint this device should be laggy. I have several other devices with dual cores and they run far better. If somehow a bigger swap was implemented I think we'd have a winner. I've been disappointed since Jelly Bean, back then this thing used to fly. I think it's all about someone taking time on development, I know Hash has little interest and I don't blame him. Its an old device. I just haven't found anything with its size, screen resolution, and weight to replace it.
[8.9" Kindle Fire HD Android Development] Broncos15:
I can deal with some slowdowns as I use it mostly as a newsreader and chromecast controller. Just wondering how the old omap and less than a gig of ram would handle lollipop. One way to find out I guess...