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Ok guys, I need some help. I have a brand new 2013 LG LA6200 Smart TV. HDMI-CEC (SIMPLINK) on the LG is turned on and so is SIMPLINK Auto Power is set to on. I have the Chromecast dongle powered from the USB power supply rather than the TV USB port. Here is the problem. When the TV is off and I select Chromecast Google Play movie to be cast, I thought Chromecast was supposed to turn ON the TV and flip to the right input and start playing. However the TV never turns on. It is just sitting there turned off. However if I manually turn it on, the correct input is selected and the movie is streaming. So... how does Chromecast is supposed to automatically turn the TV on?? Cause in my setup it ain't happening. Any help will be greatly appreciated. BTW, is there a Google Chromecast place to post questions like that? Thanks.
larryvand said:
Ok guys, I need some help. I have a brand new 2013 LG LA6200 Smart TV. HDMI-CEC (SIMPLINK) on the LG is turned on and so is SIMPLINK Auto Power is set to on. I have the Chromecast dongle powered from the USB power supply rather than the TV USB port. Here is the problem. When the TV is off and I select Chromecast Google Play movie to be cast, I thought Chromecast was supposed to turn ON the TV and flip to the right input and start playing. However the TV never turns on. It is just sitting there turned off. However if I manually turn it on, the correct input is selected and the movie is streaming. So... how does Chromecast is supposed to automatically turn the TV on?? Cause in my setup it ain't happening. Any help will be greatly appreciated. BTW, is there a Google Chromecast place to post questions like that? Thanks.
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You're not the only one. I have a 2013 LG TV (LN5700) and auto power does not work. Same setup as you-- Inputs are correctly switched but the darn display won't turn on.
I'm not sure whether the problem is with the Chromecast itself or the display as I don't have any other HDMI-CEC devices to test with.
I have an LG LM4700, and my AVR with CEC control never turned on/off my tv, but my tv would turn my AVR on/off.
I read on a forum post somewhere (take with a grain of salt) that LG didn't fully implement the full HDMI-CEC spec with SIMPLINK.
SkitchBeatz said:
You're not the only one. I have a 2013 LG TV (LN5700) and auto power does not work. Same setup as you-- Inputs are correctly switched but the darn display won't turn on.
I'm not sure whether the problem is with the Chromecast itself or the display as I don't have any other HDMI-CEC devices to test with.
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I also have an LG BP530 a Blu-Ray player which also has Simplink (HDMI-CEC). With both the TV and the Blu-Ray player OFF, pushing the front play button of the Blu-Ray player, turns the blu-player ON, turns the TV ON, switches to the right input and plays the DVD. In other words the Simplink (HDMI-CEC) protocol as implemented by LG for all their LG devices WORKS.
I'm thinking that HDMI-CEC may be a "standard" but every OEM has only tested their implementation with their own stuff. That is why each OEM uses a different name (Anynet+, bravia link/sync, simplink, Ratga link, etc...) instead of HDMI-CEC. I bet if you put the HDMI signal through a scope and try to isolate the control signals you will find that from each OEM they are just a tad different (maybe a bit longer pulse..).
Google could fix this in firmware of course but they will have to test for each brand individually and in the end possibly they will have to have an option to select the type of TV the user has for the differences in HDMI-CEC implementations. Either that or each OEM will have to update their sets to more correctly adhere to the standard.
This is why I never put much faith in HDMI CEC when I use to install home theaters and media rooms. It always led to inconsistent operation with some devices working and others not. I would always turn that feature off and program a universal remote for the customer.
At least it is switching inputs for you, though. That to me is the most important. Are you mainly using a phone/tablet for chromecast or a PC? If mainly using your phone/tablet, you could use LG's app to turn on the TV before casting. I know it is not ideal, but unfortunately HDMI CEC was a standard but all manufacturers implemented it differently. There is currently no way for chromecast to work the way it was demoed to work across all manufacturers' TVs.
EDIT: Some ray of light is that LG is a hardware partner with Google. Chromecast support might get pushed to your current TV and/or Blu-ray which would solve your problems. If nothing else, I suspect LG to come out with a new Blu-ray player that supports Chromecast.
EDIT 2: I forgot that LG's network protocol does not support turning "on" the TV or Blu-ray so using LG's app will not help you.
In fact I have 3 Chromecasts (for our 3 TVs) and the Chromecast input switching works so well on the LG that I hooked all 3 on the LG and I was able to cast from Chrome at will to one at a time and they would automatically switch to the correct input on each and every time. Now if they can fix the Auto Power ON I will be all set. I also think that LG and Google have a good relationship so they can hopefully work out who will update what (Chromecast or the LG TV) to fix this. I certainly will continue bothering them both (Google and LG) till they fix the issue.
larryvand said:
Ok guys, I need some help. I have a brand new 2013 LG LA6200 Smart TV. HDMI-CEC (SIMPLINK) on the LG is turned on and so is SIMPLINK Auto Power is set to on. I have the Chromecast dongle powered from the USB power supply rather than the TV USB port. Here is the problem. When the TV is off and I select Chromecast Google Play movie to be cast, I thought Chromecast was supposed to turn ON the TV and flip to the right input and start playing. However the TV never turns on. It is just sitting there turned off. However if I manually turn it on, the correct input is selected and the movie is streaming. So... how does Chromecast is supposed to automatically turn the TV on?? Cause in my setup it ain't happening. Any help will be greatly appreciated. BTW, is there a Google Chromecast place to post questions like that? Thanks.
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Read link below to solve your problem.
http://forum.xda-developers.com/showpost.php?p=44248801&postcount=4
xuser said:
Read link below to solve your problem.
http://forum.xda-developers.com/showpost.php?p=44248801&postcount=4
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Sorry but no dice. Simplink settings: Simplink ON, Auto Power ON. The TV recognizes the 3 Chromecasts plugged into the 3 HDMI inputs with the Simplink logo on the input TV screen, but it refuses to allow them to turn the TV on. All 3 are powered with the external power brick. However, once the TV is manually turned on, the Chromecasts do switch to the correct input when something is cast to them. So as far as the 2013 LG model 47/50/55LA6200 is concerned, the only issue is that Chromecast will not turn the TV ON even though the Auto Power setting of Simplink (LG speak for HDMI-CEC) is on.
Either Chromecast or LG need to update the firmware for their devices, as I have said before the LG Blu-Ray player with Simplink does not have that problem and is able to turn the TV on just fine.
Placeholder for HDMI-CEC
http://www.quantumdata.com/pdf/CEC_White_Paper.pdf
And if you have, tell us how you did it. I have been trying everything on my LG SIMPLINK TV and no go. All the right settings on the TV are ON but still no go,
CEC, or Consumer Electronics Control, allows for HDMI devices to be controlled with one remote control. If your television has CEC support, you may be able to turn on and change the input on your TV using your phone, tablet or computer while using Chromecast. Please note that in order for CEC to work (if CEC is supported by your TV), your Chromecast must be powered by a power outlet.
Manufacturers often call CEC by different names, including Anynet+ (Samsung), Aquos Link (Sharp), BRAVIA Link and BRAVIA Sync (Sony), HDMI-CEC (Hitachi), CE-Link and Regza Link (Toshiba), SimpLink (LG), HDAVI Control, EZ-Sync, VIERA Link (Panasonic), EasyLink (Philips), and NetCommand for HDMI (Mitsubishi).
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From: https://support.google.com/chromecast/answer/3210071?hl=en&ref_topic=3267370
larryvand said:
And if you have, tell us how you did it. I have been trying everything on my LG SIMPLINK TV and no go. All the right settings on the TV are ON but still no go,
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It worked after I turned on Anynet+ on my Samsung TV (from 2009). I also had to move from the TV USB to an external USB Power (actually it's my Google TV that provides power) because when the TV is off, it does not power the USB port.
This is a brand new 2013 LG smart TV. I have turned on the SIMPLINK and the auto power on, and the chromecast is using its own powersupply. I also have a SIMPLINK blu-ray player and that works perfectly. When I use the blu-ray player remote it will turn on the TV and switch to the right channel. Same with the LG TV remote control it can turn off and on the blu-ray player. So the HDMI-CEC (SIMPLINK) is not the issue. It is Chromecast as far as I can tell. With the TV off, if I try to cast a youtube video, chromecast does not turn on the TV for some reason. If the TV is already on but in a different input, it does switch to the right input so part of the Chromecast HDMI-CEC is working. I'm at a loss here.
What version of firmware your chromecast uses?
eyeballer said:
From: https://support.google.com/chromecast/answer/3210071?hl=en&ref_topic=3267370
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That's interesting, because I have my Chromecast running off of USB power (from my TV's USB port), and it still turns on my TV and switches inputs automatically when it detects casting. For what it's worth, my TV is a cheap 32" Vizio smart TV (purchased earlier this year from Target).
Has anyone been able to plug it directly into their receiver and get it to turn it on?
Mine is working as advertised. Powered by AC.
wsimon said:
Has anyone been able to plug it directly into their receiver and get it to turn it on?
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I got mine to flip to the input when I started a YouTube. Still working with it to see what all can be automated.
Also no power without the USB.
Marantz av7005 processor
---------- Post added at 02:49 AM ---------- Previous post was at 02:23 AM ----------
wsimon said:
Has anyone been able to plug it directly into their receiver and get it to turn it on?
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I got mine to flip to the input when I started a YouTube. Still working with it to see what all can be automated.
Marantz av7005 processor
I have a Monoprice 4 port HDMI switcher and the Chromecast is plugged into it. It keeps turning on the other TV. My wife thought we had a ghost.
My 5 yo Samsung 46in LCD detects it as an AnyNet device and switches inputs but won't power on. My 2 yo Insignia 24in powers on.
I think it all rests on age
Sent from my Nexus 10 using Tapatalk HD
Mine works and turns the TV on and even switches to the Chromecast input if I start a cast.
I have a 3 year old Sony 46EX710 with the Chromecast plugged into power using the USB port on the TV. It seems my TV powers the USB ports at all time, even if the TV is off.
It doesn't switch back to the last input or turn the TV off if I stop the cast though (I'm sure that has more to do with the TV than the Chromecast).
My Sony 40EX400 turns on when I have it plugged into the wall, but not when plugged into the USB port. (indicating the usb port does not provide power when the tv is turned off)
I dont believe usb ports receive power from tvs when the tv is off thus the reasoning that you need the wall outlet. I have setup 3 chromecasts and all require wall outlet power to turn on tvs, 2 samsung and 1 sony tv.
I've got a 2011 LG TV (simplink) that works with turning it on. However, my Vizio smart TV doesn't turn on. I need to do some more testing with the Vizio, because it would be handy if it turned it on.
empirescrumble said:
That's interesting, because I have my Chromecast running off of USB power (from my TV's USB port), and it still turns on my TV and switches inputs automatically when it detects casting. For what it's worth, my TV is a cheap 32" Vizio smart TV (purchased earlier this year from Target).
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That is interesting. Your USB ports must be powered all the time, even when your TV is off. What TV do you have.
timtlm said:
I've got a 2011 LG TV (simplink) that works with turning it on. However, my Vizio smart TV doesn't turn on. I need to do some more testing with the Vizio, because it would be handy if it turned it on.
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Finally someone with an LG. I have a brand new LG 2013 47LA6200 smart TV and I still can not turn the TV ON (switches inputs just fine). I have both settings to ON for the SIMPLINK and AUTO POWER.
My Chromecast Firmware version is 12072 (you can see that on the Chromecast app). What is yours?
Mine has the same build number. My TV is the 47LW5600. Mine just worked without messing with any settings. Although, I've looked, and I can't seem to fine my simplink settings in the menus.
EDIT: Just realized that there's a simplink button on the stock remote that opens up the simplink menu. Only has options to turn off and on.
larryvand said:
That is interesting. Your USB ports must be powered all the time, even when your TV is off. What TV do you have.
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Here is the TV I have:
http://store.vizio.com/e322ar.html
However, after the TV has been off for a long while, the Chromecast seems to shut off at some point, not sure at what point though. Oh well, I can live with that. My TV is usually on, even when I'm not watching it, for some kind of background noise, haha
timtlm said:
I've got a 2011 LG TV (simplink) that works with turning it on. However, my Vizio smart TV doesn't turn on. I need to do some more testing with the Vizio, because it would be handy if it turned it on.
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I had to go into the CEC settings on my Vizio smart TV to make it work, but it now works perfectly!
mikaelsnavy said:
I had to go into the CEC settings on my Vizio smart TV to make it work, but it now works perfectly!
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I have turned CEC on in the settings. There's only an on/off option, and detect devices, which it does detect the chromecast. It switches inputs just fine, but won't turn on the TV. I've also tested my HDMI receiver, and it doesn't turn that on either. However, I know the receiver can be turned on via CEC because my TV is capable of turning the receiver on. Maybe an update will offer better CEC compatibility.
EDIT: My raspberry pi turns on my vizio TV when you power it on, so the TV is definitely capable of being turned on via CEC.
I have one TV in my house (Toshiba 55HT1U) that keeps getting turned on by the Chromecast. I turn the TV off, and then with a few minutes, the TV will be back on again. Unplug the Chromecast, and the TV stays off. I have tried multiple Chromecasts with the same results, I disabled Regza Link (Toshiba's HDMI-CEC), and it still keeps happening. This also happens whether the Chromecast is connected to my TV or to the receiver which is then connected to the TV. I have read where this particular TV suffers from this issue with other devices, but I wish there was a way to turn it off from the Chromecast end.
Right now, my solution is to go and unplug the Chromecast when I am not using it...hardly an elegant solution.
Have you check the manufacture website of your TV. I know some TV within the last few years, if it have a USB hook up, you can typically update the TV Firmware it may solve your problem. Just a shot in the dark. Also Chromecast is also getting an update.
jumpmanjay said:
I have one TV in my house (Toshiba 55HT1U) that keeps getting turned on by the Chromecast. I turn the TV off, and then with a few minutes, the TV will be back on again. Unplug the Chromecast, and the TV stays off. I have tried multiple Chromecasts with the same results, I disabled Regza Link (Toshiba's HDMI-CEC), and it still keeps happening. This also happens whether the Chromecast is connected to my TV or to the receiver which is then connected to the TV. I have read where this particular TV suffers from this issue with other devices, but I wish there was a way to turn it off from the Chromecast end.
Right now, my solution is to go and unplug the Chromecast when I am not using it...hardly an elegant solution.
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GreenDroidX said:
Have you check the manufacture website of your TV. I know some TV within the last few years, if it have a USB hook up, you can typically update the TV Firmware it may solve your problem. Just a shot in the dark. Also Chromecast is also getting an update.
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I have seen where some people have tried the update and it made no difference, but I will definitely try this when I get home tonight.
Find your HDMI-CEC options (whatever Toshiba calls it) and turn on HDMI-CEC but turn off Auto power. That will allow HDMI-CEC to switch to the right input but will not allow the HDMI-CEC to auto power the TV.
I have the exact same problem with a Toshiba 46G300U1 so let me know if you find a solution. It seems like a bunch of the Toshiba's all have this problem and I doubt Toshiba is going to fix it. I've tried various different kinds of options (connecting the Chromecast through a cable, a HDMI switch etc.). As long as the Chromecast is switched on and connected to the TV it always turns on automatically. Obviously disabling HDMI-CEC doesnt seem to help. I suspect there is a bug in the Toshiba that still keeps acting on HDMI-CEC signalsI am planning to file a support case with Chromecast as they are more likely to fix the problem (maybe an option to disable CEC on the Chromecast) than Toshiba. But since that is unlikely I am thinking maybe I can try a cable that doesnt properly support HDMI-CEC. It seems CEC is a separate wire and there are lots of people online complaining about cables that don't support CEC.
Try not powering your device via USB from the TV. (If you are) My LG TV seems to have issues with CEC from devices that get power from it via USB. Does weird stuff like this
So I tried updating the firmware on my TV...they said just put the new firmware on a USB stick, then plug the stick into the TV and it will automatically prompt you to start the install. Well, it didn't. I tried 2 different USB sticks with no success.
My "fix" was to just power the Chromecast WITH the USB port on the TV. That way the Chromecast is off when the TV is, so it won't try to turn it back on.
Great idea. I am connecting my USB cable to the TV's USB port for now. I might try connecting the Chromecast via my audio receiver later on. FWIW the firmware update did nothing to solve the issue on my TV.
I don't want to disable CEC on my TV, because I'd still like to have the CEC capability to turn on/off my home theatre automatically along with the TV. I can use USB power from the TV to power my Chromecast, but once the TV is on, my home theatre mutes automatically because it gives up control of CEC to chromecast. It's an unfortunate software decision made by Sony, the maker of my home theatre. I want the home theatre speakers to stay active, but Sony has programmed it to mute when another device on the same HDMI bus takes CEC control.
If you don't want your Chromecast to be a CEC-control device, meaning you don't want it turning your set on at all, or you don't want it overriding other CEC devices, just order lindy-usa.com part number 711110-1, which is a HDMI CEC Less Adapter, Female to Male, and put it inline with your Chromecast. It disables the CEC sense line from your Chromecast to your TV. Problem solved. Neall
What happened? I decided to try to play video content with the one video that I had no problem. On my Samsung TV got a popup stating that a AllShare device was detected, I click okay, video plays in like a player window format, I back out to folders from my tablet showing! My source shows AllShare BubbleUPnP device. Confused but happier!
wptski said:
What happened? I decided to try to play video content with the one video that I had no problem. On my Samsung TV got a popup stating that a AllShare device was detected, I click okay, video plays in like a player window format, I back out to folders from my tablet showing! My source shows AllShare BubbleUPnP device. Confused but happier!
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You still have the new Koush Cast (/AllCast/AirCast) installed?
bhiga said:
You still have the new Koush Cast (/AllCast/AirCast) installed?
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The new Koushcast? No, I read that Chromecast support was removed.
I think I know what happened. I have a Samsung WiFi adapter plugged in but have used it on a old laptop and it was plugged into USB port that might be a service port or whatever. I discovered that since using AllCast and never tried it again since. BubbleUpnP is just using WiFi to stream although I couldn't get back to my folder with the videos unless I used AllCast to start a video.
I've tried BubbleUPnP in the past but remember next to nothing! Navigating folders on the TV is a PITA, I do remember that.
The author of BubbleUPnP did mention supporting Chromecast in the future. At first I thought that they did, my mistake. Make that two mistakes!
I powered down/up, I was able to play compatible videos with the Chromecast that start with a good delay without using BubbleUPnP just AllCast. Videos that don't play with Chromecast from an Android device won't play using Chrome on a PC either nor cast.
Compatible videos is the key to success.
Interesting! I was hoping you had magically solved Android screen mirroring with Chromecast - my TV is too old to support DLNA video, only pictures and music.
bhiga said:
Interesting! I was hoping you had magically solved Android screen mirroring with Chromecast - my TV is too old to support DLNA video, only pictures and music.
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Sorry I got your hopes for nothing. I use to have the phrase "Most confused!" in my signature in another forum, maybe I should include it here as well.
wptski said:
Sorry I got your hopes for nothing. I use to have the phrase "Most confused!" in my signature in another forum, maybe I should include it here as well.
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LOL no worries. Less-intelligent people would simply accept. Confusion means you're still thinking and trying to make sense of things.
bhiga said:
LOL no worries. Less-intelligent people would simply accept. Confusion means you're still thinking and trying to make sense of things.
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I may have had my Samsung WiFi adapter plugged into the right USB port after all! I tried to access my PC from the TV and I had no connection because the setup was changed from a wireless connection back to wired again. This means that the use of BubbleUPnP, Allcast or Chromecast hoses the setup. I tried to use each one but couldn't get it to repeat. Some TVs comes with WiFi built in, I wonder if this is a issue with them or just because in my case, I was using an external WiFi adapter?
BubbleUPnP updated for the second time today, must have introduced a bug earlier.
wptski said:
I may have had my Samsung WiFi adapter plugged into the right USB port after all! I tried to access my PC from the TV and I had no connection because the setup was changed from a wireless connection back to wired again. This means that the use of BubbleUPnP, Allcast or Chromecast hoses the setup. I tried to use each one but couldn't get it to repeat. Some TVs comes with WiFi built in, I wonder if this is a issue with them or just because in my case, I was using an external WiFi adapter?
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Chromecast has its own wireless connection to your wireless router or access point, so I can't think of a reason why Chromecast would have any interaction with the TV's network connection.
Am I following you correctly that you have a wired network connection on your TV and the wireless USB adapter connected to your TV, and both are connected? If the wired connection on the TV is hooked up there should be no need to have the WiFi adapter as well, unless you have a really complicated network setup.
As long as both the TV and your DLNA source are on the same network, doesn't matter whether one is wired or the other is wireless. Unless something like AP isolation keeps the wireless clients from "seeing" the wired clients (uncommon), or the wired and wireless networks are on different subnets (rare).
tl;dr - try unplugging either your TV's WiFi adapter or the network cable on the TV. Do whatever is necessary to make the single connection work - and then try everything else. Everything should work.
bhiga said:
Chromecast has its own wireless connection to your wireless router or access point, so I can't think of a reason why Chromecast would have any interaction with the TV's network connection.
Am I following you correctly that you have a wired network connection on your TV and the wireless USB adapter connected to your TV, and both are connected? If the wired connection on the TV is hooked up there should be no need to have the WiFi adapter as well, unless you have a really complicated network setup.
As long as both the TV and your DLNA source are on the same network, doesn't matter whether one is wired or the other is wireless. Unless something like AP isolation keeps the wireless clients from "seeing" the wired clients (uncommon), or the wired and wireless networks are on different subnets (rare).
tl;dr - try unplugging either your TV's WiFi adapter or the network cable on the TV. Do whatever is necessary to make the single connection work - and then try everything else. Everything should work.
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Yes the Chrome cast has its own WiFi connection.
I have either the wired or wireless option but there is no wired connection to it that's why I had to get the Samsung WiFi adapter.
I was able to switch back/forth several times between DLNA(BubbleUPnP), TV WiFi and Allcast without losing any of them. I have no idea how or why but it did happen "once" or actually "twice".
wptski said:
I was able to switch back/forth several times between DLNA(BubbleUPnP), TV WiFi and Allcast without losing any of them. I have no idea how or why but it did happen "once" or actually "twice".
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Ahh okay, I misunderstood. I thought your TV had a wired connection too.
It's possible the Chromecast and Samsung WiFi adapter are too close and therefore causing signal interference, so the Samsung WiFi adapter might have went back into a disconnected mode and the TV wanted it set up again. *shrug*
Worst case you could get a USB or HDMI extension cable, I guess. I have a ~10-foot HDMI extension cable on my Chromecast because it's connected to my sound bar's I/O box. At first it was to troubleshoot the Internet connectivity problems I was having (which were fixed with update to 13300), then I decide to leave it as it's much more convenient to access my Chromecast when I don't have to contort myself behind stuff, heh.
bhiga said:
Ahh okay, I misunderstood. I thought your TV had a wired connection too.
It's possible the Chromecast and Samsung WiFi adapter are too close and therefore causing signal interference, so the Samsung WiFi adapter might have went back into a disconnected mode and the TV wanted it set up again. *shrug*
Worst case you could get a USB extension cable, I guess.
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Just got my HDMI 90 adapter today, see what happens next to me?
The Samsung adapter is no cheapy from what I've read about it. No PC drivers for it but I researched its chip and managed to hack a INF for use on my old XP laptop, IIRC it comes up as a Linksys device.
My Chromecast recently stopped changing the input on my TV to the HDMI input the chromecast is connected to. Casting works, but I have to manually change input.
Chromecast will turn the TV on, but will not change the input.
I am using a Sony Bravia KDL-46HX701, casting from Android 4.4, and Windows 7.
My router is an ASUS RT-AC66U.
Thanks in advance for any suggestions.
arns said:
My Chromecast recently stopped changing the input on my TV to the HDMI input the chromecast is connected to. Casting works, but I have to manually change input.
Chromecast will turn the TV on, but will not change the input.
I am using a Sony Bravia KDL-46HX701, casting from Android 4.4, and Windows 7.
My router is an ASUS RT-AC66U.
Thanks in advance for any suggestions.
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Make sure HDMI-CEC is enabled on your TV. Refer to the manual. Could be called something else.
I have a Sony Bravia also that had the same problem. When I added a new hdmi device, it stopped the chromecast from switching inputs. I unpluged the new device (a connector for my laptop) and the chromecast switched again. Unplug all hdmi cables from tv except chromecast and see if it switches. Then add cables one at a time. That is what worked for me. I hope it works for you!
DataAndroid said:
I have a Sony Bravia also that had the same problem. When I added a new hdmi device, it stopped the chromecast from switching inputs. I unpluged the new device (a connector for my laptop) and the chromecast switched again. Unplug all hdmi cables from tv except chromecast and see if it switches. Then add cables one at a time. That is what worked for me. I hope it works for you!
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that's it! the new cable box is interfering with the chromecast for some reason.
were you able to resolve the problem somehow, or did you just stop using the second device?
arns said:
that's it! the new cable box is interfering with the chromecast for some reason.
were you able to resolve the problem somehow, or did you just stop using the second device?
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Typically the cable boxes hdmi ports are 'always on'. Basically the TV thinks there is always a signal there. Even when the box is off. If you have comcast and an 'X1' box those boxes never turn off even when you use the power button on the remote.
I just left the second device unplugged. I don't use it regularly. I am glad that worked!