Database Develop

One possible solution for "No Cast devices found."

This weekend, while trying to cast a tab in Chrome, ran into the "No Cast devices found." issue that a number of people have complained about. Thankfully, I found a solution quickly and without much frustration.
In my case, I had been running a VPN connection using OpenVPN on a windows TAP adapter. Apparently, when the connection is active, and therefore the virtual adapter, the Chrome plugin gets confused and starts attempting to discover your Chromecast on the VPN adapter. Once I shut down the VPN tunnel, the Chromecast was successfully discovered.
So, in summary, if you run into this issue, and are running VPN tunnel(s) and/or virtual adapters in windows, try disconnecting or even disabling those virtual network adapters.
Hope this helps someone else out there!
See also my more in-depth howto: http://www.muchtall.com/2013/11/01/fix-for-chromecast-no-cast-devices-found/

In my case it was a firewall, sorted it out by adding a rule to allow local access both ways, with all protocols.
I think Chromecast uses UDP.

kyda75 said:
In my case it was a firewall, sorted it out by adding a rule to allow local access both ways, with all protocols.
I think Chromecast uses UDP.
Click to expand...
Click to collapse
Could you elaborate more?
Sent from my TF300T using Tapatalk 4

kozmo2k4 said:
Could you elaborate more?
Sent from my TF300T using Tapatalk 4
Click to expand...
Click to collapse
I have McAfee Host Intrusion Prevention running on my PC, I saw some blocking messages in the activity log,
I then added a firewall rule as per the attached image
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After that the Chrome browser detected the CC fine.
That was how I solved mine.

in my case it was not the antivirus
it was some kind of vpn because of the motherboard.
I had to go to windows device manager
and in "network adapters"
disable some virtual wifi miniport adaptes and also a bluetooth personal area network
after that it got detected in chrome

muchtall said:
So, in summary, if you run into this issue, and are running VPN tunnel(s) and/or virtual adapters in windows, try disconnecting or even disabling those virtual network adapters.
Click to expand...
Click to collapse
It's a stupid BUG I do have Hyper-V virtual switch ('cause I'm developing apps for Windows Phone), and damn Chromecast can't connect. Yes, disabling and removing all working network settings & virtual adapters will solve the problem, but it's not a solution.
Google MUST fix that bug 'cause there are lot of issues and people reporting the same problem!

sensboston said:
It's a stupid BUG
Click to expand...
Click to collapse
Agreed. It's definitely an oversight to assume that the primary interface on the PC is the interface in which the Chromecast resides. The probably ought be doing discovery on all interfaces.

Tunnels/VPNs would definitely cause finding your Chromecast to fail. Disabling Hamachi, for whatever reason, resolved the issue on my laptop.

muchtall said:
This weekend, while trying to cast a tab in Chrome, ran into the "No Cast devices found." issue that a number of people have complained about. Thankfully, I found a solution quickly and without much frustration....
Click to expand...
Click to collapse
Aww man, thank you, it worked like a champ

USB Debugging greyed out? Here's why

Earlier today I was trying to debug an Eclipse app on my Note 4 (SM-N910C), and although the Developer options were enabled, the option "USB Debugging" was greyed out, like this:
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"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Upon some investigation (and a few reboots), I found out the culprit: MyKNOX.
I happen to be one of the few N4 users that do use KNOX for what it is intended, and I have installed MyKNOX and have a working container.
According to Samsung:
If you are using My KNOX, you cannot enable USB debugging mode while the container is installed.
Click to expand...
Click to collapse
Source: https://www.samsungknox.com/en/faq/can-i-use-usb-debugging-mode-device-running-knox
So, if you run into the same trouble with a Galaxy S5 our Note 4, and haven't figured out yet why you can't enable USB Debugging, know that it is a trade off: you use your phone either for KNOX or for development, but not both.

Useful to know. Thanks

why are you using myknox ? Samsung gives you knox express with 250 users free - much more functionality than myknox and it has proper device tracking/remote wipe/policy enforcement.

zurkx said:
why are you using myknox ? Samsung gives you knox express with 250 users free - much more functionality than myknox and it has proper device tracking/remote wipe/policy enforcement.
Click to expand...
Click to collapse
Because my phone is not linked to a corporate server: I am a single user/standalone device. In my case I have to use MyKNOX.

you dont need to link to a corporate server. myknox express links it to your samsung account directly. i am a single user with knox express.

zurkx said:
you dont need to link to a corporate server. myknox express links it to your samsung account directly. i am a single user with knox express.
Click to expand...
Click to collapse
From where to download knox express? I searched in play store & galaxy app but not found.

its already on your phone.
sign in and link your phone :
https://www.samsungknox.com/en/user/register/express
a knox icon will appear when you reboot the device.

zurkx said:
its already on your phone.
sign in and link your phone :
I installed Knox Express But stuck with it. Can't move any of my data out of it now. You know any way to copy data to personal mode. further how do install applications in Knox Mode. I can't copy data in Knox Mode.
Please let me know
Click to expand...
Click to collapse

Great help, cracked my head for two days on why i couldn't enable usb debugging.

Huge thank you. I have a Note 5 and had the same issue where I could not turn on USB debugging because it was grayed out. It worked before (I need it so I can use Helium to backup my apps), never thought MyKnox would disable it. Uninstalled and I can now turn it on.

Thank you!!!
This was really helpful, thanks a lot!!
Simonetti2011 said:
Earlier today I was trying to debug an Eclipse app on my Note 4 (SM-N910C), and although the Developer options were enabled, the option "USB Debugging" was greyed out, like this:
Upon some investigation (and a few reboots), I found out the culprit: MyKNOX.
I happen to be one of the few N4 users that do use KNOX for what it is intended, and I have installed MyKNOX and have a working container.
According to Samsung:
Source: https://www.samsungknox.com/en/faq/can-i-use-usb-debugging-mode-device-running-knox
So, if you run into the same trouble with a Galaxy S5 our Note 4, and haven't figured out yet why you can't enable USB Debugging, know that it is a trade off: you use your phone either for KNOX or for development, but not both.
Click to expand...
Click to collapse

Well, I just found thid out tonight as I wanted to enable it and it is greyed out..... I am using Knox so I am stuffed....

this is the correct answer. knox disables usb debugging and greys out the option.

so simple. the reason why you had gray scale in usb debugging after enabling the developer mode, its because of myknox. i have encountered the same problem but i able to fix it. to fix your problem just follow my instructions.
1. go to my.samsungknox dot com (use laptop or pc)
2. login your account by entering the email and password you had registered in your samsung account phone.
3. a several option will appear. just click UNLOCK and UNREGISTERED your phone option. then your myknox will automatically uninstalled in your phone. (make sure your phone has a connection)
4. go back to developer option after myknox has been removed automatically, then you can enabled the usb debugging now.
thats it. i fix mine. 100%. dont forget to say thanks once you fixed yours. have a nice day.

Thanks for the explanation.
BUT, The above procedure did not rectify the situation on my S7 Edge. USB Debugging is still grayed out!

On your settings, go to Developer options and disable OEM unlock, Reboot and Done

Please tell me ways to unlock USB debugging grayed out in Android tv

unable to add advanced calling to my line on vzw

I'm attempting to add the HD voice feature thru vzw acct and its saying unable to add feature to try again 10 mins or dial *668 or w/e. I did it on my wife's n6-midnight blue bought from gps with no issues. Mine is cloud white from amazon. Any idea what's going on? Currently on 5.0.2

GreeKNastY said:
I'm attempting to add the HD voice feature thru vzw acct and its saying unable to add feature to try again 10 mins or dial *668 or w/e. I did it on my wife's n6-midnight blue bought from gps with no issues. Mine is cloud white from amazon. Any idea what's going on? Currently on 5.0.2
Click to expand...
Click to collapse
hd calling is only on android 5.1 +

Yea but you can enable it thru your account even before updating..I did it with one already. Both phones are 5.0.2

GreeKNastY said:
Yea but you can enable it thru your account even before updating..I did it with one already. Both phones are 5.0.2
Click to expand...
Click to collapse
There is a thread on this in General. Is it not showing up on your line as a feature to add?

its showing up but when i go to add it shows this:
its on a family plan and the line has unlimited. my line also has unlimited(seperate accounts) and i had no issues adding the feature. so im lost
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any ideas guys? also in my notif on vzw acct it says the sim is inserted in a device unknown to vzw

GreeKNastY said:
any ideas guys? also in my notif on vzw acct it says the sim is inserted in a device unknown to vzw
Click to expand...
Click to collapse
There you go. That's the reason. there have been plenty of threads about the fact that you cant change your VZ account with a sim in a non recognized VZ device.

RW-1 said:
There you go. That's the reason. there have been plenty of threads about the fact that you cant change your VZ account with a sim in a non recognized VZ device.
Click to expand...
Click to collapse
so how was i able to add the feature on my GPS n6?

GreeKNastY said:
so how was i able to add the feature on my GPS n6?
Click to expand...
Click to collapse
Beats me, perhaps you need to Call VZ on this, you may try the following on the N6, but if not seen as a VZ device it may not work:
http://www.droid-life.com/2015/03/1...e-and-data-now-works-on-nexus-6-with-verizon/
you should also be on 5.1 first before trying, as it isn't supported on the N6 without it, which could also generate the message.

just chatted and they will be sending me a new sim(current one was cut from gnex phone)
i shouldnt have any issues activating the sim right?

RW-1 said:
Beats me, perhaps you need to Call VZ on this, you may try the following on the N6, but if not seen as a VZ device it may not work:
http://www.droid-life.com/2015/03/1...e-and-data-now-works-on-nexus-6-with-verizon/
you should also be on 5.1 first before trying, as it isn't supported on the N6 without it, which could also generate the message.
Click to expand...
Click to collapse
welp heres something to tickle your brain....i managed to add the feature through the verizon mobile app!
not sure why but in case anyone else has issues

+1 on adding advanced calling via the mobile app.

Rom Dedicated to Hotspot

Has anyone come across a ROM that's dedicated to HotSpoting?
My thoughts are this:
1) Is there anything for this phone like a SafeStrap where you can change roms just by rebooting?
2) Could a rom be written to disable pretty much everything except hotspot (cannot receive text messages or phone calls, no apks are trying to use the internet in the background, etc...)?
I don't know how to make roms, so I am not going to say it sounds easy, but it does sound much simpler than a lot of the full OS roms I see.
Thanks guys!

I mean, there're 3G router for 30 dollars that can do that, and you want to use a fully featured phone that costs 150 USD$ o more for that?
Mmmmm.....

CorneliusRox said:
Has anyone come across a ROM that's dedicated to HotSpoting?
My thoughts are this:
1) Is there anything for this phone like a SafeStrap where you can change roms just by rebooting?
2) Could a rom be written to disable pretty much everything except hotspot (cannot receive text messages or phone calls, no apks are trying to use the internet in the background, etc...)?
I don't know how to make roms, so I am not going to say it sounds easy, but it does sound much simpler than a lot of the full OS roms I see.
Thanks guys!
Click to expand...
Click to collapse
yeah but there's already ROMs that have the ability to do Wifi hotspot. so why wouldnt you just flash one of those and call it a day.
not like you're really going to see any better battery life by only having it as a hotspot. that **** kills the battery

steveo17 said:
yeah but there's already ROMs that have the ability to do Wifi hotspot. so why wouldnt you just flash one of those and call it a day.
not like you're really going to see any better battery life by only having it as a hotspot. that **** kills the battery
Click to expand...
Click to collapse
My phone already does hotspot. I just changed permissions and have been good to go.
I can't get internet out at my house, so I use my phone's hotspot (and an antenna and amplifier I put together) so I can still game. When I get a phone call, or a picture message, it will lag like crazy, or dump my game.
This is why I would like a very simple ROM that would not allow for anything but a hotspot, or even just the ability to turn everything else off. I also noticed that if I can keep my unused RAM above 1gb, it hotspot's better.
neondunker said:
I mean, there're 3G router for 30 dollars that can do that, and you want to use a fully featured phone that costs 150 USD$ o more for that?
Mmmmm.....
Click to expand...
Click to collapse
I have looked into 3G routers, but then I'd have to pay for another phone line, and I'm not looking to do that. Then there's companies that sell internet service that is unlimited and 3G, but they are about a $500 start up fee, and about $125 a month after that. That is CRAZY!
Unless I've got it wrong, and I can somehow clone my SIM Card for the 3G router? I'm definitely no 3G router expert. Thoughts?

In that case, you can install Android Firewall and block everything except tethering and there's an app for blocking all calls. I think (my opinion) that's easier than a full hotspot rom having to switch back and forth. You can also make an script for enabling both or use tasker.

neondunker said:
In that case, you can install Android Firewall and block everything except tethering and there's an app for blocking all calls. I think (my opinion) that's easier than a full hotspot rom having to switch back and forth. You can also make an script for enabling both or use tasker.
Click to expand...
Click to collapse
Thanks! I'm going to look into that right now.

This app:
https://play.google.com/store/apps/details?id=com.jtschohl.androidfirewall
Does what you need.

neondunker said:
This app:
https://play.google.com/store/apps/details?id=com.jtschohl.androidfirewall
Does what you need.
Click to expand...
Click to collapse
Yup, that's what I got. Also I got another apk that blocks startup apks (BootManager), and with both of them I got better signal.
Thanks for the help.
I have also noticed that my battery life has increased a lot. I was 40% more efficient since doing this yesterday, and about 40% more efficient this morning too. I'm assuming it's because of the BootManager.

Does anyone know the programs to allow through the firewall in order to get the hotspot to work?
I tried allowing everything (by clicking the check boxes) and that didn't work unless I clicked the box that says 'all apps'. I'm assuming what I need is not populating and so the only was to get it is to click 'all apps' which defeats the purpose. :-/
And does anyone know if the hotspot is a stand alone or if it uses other applications in order to work?
Thanks again!

If you go to settings, there's an option "Tethering support". You have to enable that in order to tether to works.
Just a thing: If you modify your traffic or DNS or whatever with another program (example, AdFree that blocks ads) the adds will be blocked also to anyone that connects to the hotspot.

neondunker said:
If you go to settings, there's an option "Tethering support". You have to enable that in order to tether to works.
Just a thing: If you modify your traffic or DNS or whatever with another program (example, AdFree that blocks ads) the adds will be blocked also to anyone that connects to the hotspot.
Click to expand...
Click to collapse
I didn't find a 'settings' on it or a 'Tethering Support'. I only see when hitting menu: Firewall Disabled/Enabled, Log Disabled/Enabled, Save Rules, Exit, Help, and More.
Then under 'More', I see: Show Log, Show Rules, Clear Log, Set Password, Set Custom Script.
There is also the Mode in the top left that lets me do White/Black list.
I would love to go into 'Tethering Support if you can guide me there!

I don't know if we are seeing the same app but this one has that option
Enviado desde mi MB886 mediante Tapatalk
---------- Post added at 07:46 PM ---------- Previous post was at 07:45 PM ----------
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Enviado desde mi MB886 mediante Tapatalk

What is the apk and version number you're running? That link is dead. I downloaded 'droid wall v1.5.7'.

CorneliusRox said:
What is the apk and version number you're running? That link is dead. I downloaded 'droid wall v1.5.7'.
Click to expand...
Click to collapse
Droidwall hasn't been updated in ages and doesn't have toggles for tethering.
I use AFWall+, which built off the concept of Droidwall. It has an entry you can whitelist for Tether & DNS.

xtermmin said:
Droidwall hasn't been updated in ages and doesn't have toggles for tethering.
I use AFWall+, which built off the concept of Droidwall. It has an entry you can whitelist for Tether & DNS.
Click to expand...
Click to collapse
Ahhh. Yeah, this program looks much much better. I'm out for work all week, but when I get back home this weekend, I'll give it a try.
Thanks for the help!
EDIT: I don't have tethering in the options like you, but it's just another application on the list so I checked it. Is there anything else I need to check to make it only hotspot? Like the phone and text one, or the DLNA?

Settings-> More->Vpn "+" missing

i reinstalled the good old reliable R1HDzenui.zip rom which has always worked well for me on the Blu R1 HD. i downloaded it from a link provided by "vampirefohttps://forum.xda-developers.com/r1-hd/development/custom-rom-r1hd-zen-ui-t3473593" on this forum. It generally works fine but I can't add a vpn. I am looking for a way of adding the built in vpn that comes with android marshmallow. I would like to use it with Linphone to make sip calls though an asterisk pbx to save my cell minutes. It seems that I was able to do this previously with this rom. Maybe it needs to reenabled. Reinstalled?
Any help would be greatly appreciated. thanks!

zipolo said:
i reinstalled the good old reliable R1HDzenui.zip rom which has always worked well for me on this phone. i downloaded it a link provided by vampire on this forum. It generally works fine but I can't add a vpn. I am looking for a way of adding the built in vpn that comes with android marshmallow. I would like to use it with Linphone to make sip calls though an asterisk pbx to save my cell minutes. It seems that I was able to do this previously with this rom. Maybe it needs to reenabled. Reinstalled?
Any help would be greatly appreciated. thanks!
Click to expand...
Click to collapse
I just looked at vpn setting on v8.7 and when I click the + to add a connection I got a pop up message telling me that I need to set screen lock before I can add a vpn connection, so maybe you can try to set your lock screen first then try add vpn.

mrmazak said:
I just looked at vpn setting on v8.7 and when I click the + to add a connection I got a pop up message telling me that I need to set screen lock before I can add a vpn connection, so maybe you can try to set your lock screen first then try add vpn.
Click to expand...
Click to collapse
Nope. Thanks for the suggestion. I don't get the plus even after I do that.
When I press the 3 dots on the upper right., I get the option to select Always-on-VPN and a dialog box comes up that says Select VPN profile and .... with a radio button checked off with None as the option.
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Thanks for your response. I bought a new R1HD and i was unable to unlock the bootloader so I returned it. Is it possible to hack the ones they are selling now? I used the SP....tool with the scatter text file. I am asking since you have done a lot of work with this phone.

zipolo said:
Nope. Thanks for the suggestion. I don't get the plus even after I do that.
When I press the 3 dots on the upper right., I get the option to select Always-on-VPN and a dialog box comes up that says Select VPN profile and .... with a radio button checked off with None as the option.
Thanks for your response. I bought a new R1HD and i was unable to unlock the bootloader so I returned it. Is it possible to hack the ones they are selling now? I used the SP....tool with the scatter text file. I am asking since you have done a lot of work with this phone.
Click to expand...
Click to collapse
The spflash tool method worked up to v6.5
Then needed to use dirty-cow method from 6.6 - 7.4.2
After that have not been able to do anything with v8.1 and above

Is is possible to add the vpn after the fact as a patch to the kernel or as a system application when the phone is rooted like mine is? Any help would be greatly appreciated.

upgrade to newer rom
zipolo said:
Nope. Thanks for the suggestion. I don't get the plus even after I do that.
When I press the 3 dots on the upper right., I get the option to select Always-on-VPN and a dialog box comes up that says Select VPN profile and .... with a radio button checked off with None as the option.
Thanks for your response. I bought a new R1HD and i was unable to unlock the bootloader so I returned it. Is it possible to hack the ones they are selling now? I used the SP....tool with the scatter text file. I am asking since you have done a lot of work with this phone.
Click to expand...
Click to collapse
From what I read in your post, you have created an 8.x (oreo)rom for this phone and installing that would solve the problem. The phone runs so well with 6.0 marshmallow, I'm hesitant to go through all the trouble of wiping it to upgrade it. It there a way of upgrading without doing a fresh install?