I've got a Nexus 7 2013 Rooted (Running 6.0.1) with V4.0 Timur's Kernel, all works fine as it should, so goes into sleep when I turn the ignition off and comes out of sleep when I switch ignition back on.
The issue I'm having is with USB Pen/Flash drives when when it goes into sleep it looks like it's disconnecting the drive, and when I comes out of sleep it mounts it again, but what this is doing is corrupting the drive. So I have to format the drive every time, I've tried 5/6 various USB Flash drives including SD Card readers, same thing. I'm using a USB OTG Y Cable (Charges Nexus Too)
Very very annoying as I have all my music stored on the USB Drive. I've tried a number of OTG cables, adapters, Hubs etc and they all do this.
I cannot believe the Nexus 7 2013 doesn't have Micro SD Card Slot built in, even now after 4 years, there are not many 7 inch tablets that rival the quality of the Nexus 7 2013. I love the screen resolution and Timur's Kernal. Never crashes or freezes, it's flawless in every other way.
Hope someone can help who's had the same issue.
Can anyone help with the above please? I’ve tried everything, each time the Nexus 7 2013 goes into sleep the usb flash drive disconnects and when it reconnects next time it wakes it’s corrupted.
Never been able to get this drives to work at all, ever.
There's a settings in PEM for automout(?) Try toggling that for giggles and test.
I've never heard of that happening and it's never happened to me. I'm using a 64gb USB 2.0 forgot what brand. I have both options checked in PEM under USB automount. There are random times where PEM stops seeing my USB drive but a quick unplug/replug fixes that. I'm also using an old version of SuperSu (2.78), but it's the version Timur recommended. I have auto update disabled for it in the play store.
Shameless bump, I am having the same problem here. The only difference here is I am using a sdcard to otg coverter thingy to connect it to a USB hub. The hub is powered separately from the tablet, the tablet has the battery delete mod done to it. I need to test this further with different USB sticks / sdcards I have, already tried to usb-otg adapters and still no go
Related
A friend of mine also tried plugging in his HTC G2 (with Cyanogenmod), which also did not work. And I've been looking for a solution all around the place, and it seems to be a problem with Android phones in general; however, I know it's possible to get it working somehow because not everyone has the issue.
Basically, no matter if I have the USB connected via charge only or mass storage, the car display flashes "UNSUPPORTED". I've tried it with and without USB debugging enabled. And with all those combinations, I've tried having a music application open/no music apps running.
I also tried a solution here, which also did not do anything different.
I've also seen a few responses saying to just use Bluetooth instead. My car does not have Bluetooth capabilities. Using an AUX cable is a possibility, though I'd rather have the USB working.
Thanks!
Seems like the system wants to recognize your phone, but USB mode takes a few seconds to enable and therefore the system just rejects it. Disk mode will DEFINITELY have to be activated at some point, but the question is when. Try these steps:
1. With the car on, turn on the radio but don't have it in USB mode yet. Use radio, aux, cd, whatever. This will likely power the USB port at least.
2. Plug in your phone, make sure to select disk/mass storage mode.
3. Wait like 10-15 seconds for it to settle in, THEN select USB mode.
If that doesn't work, try different combinations. Like start with the radio completely off or something. If you have more than one USB port, try a different one. Other than that... I'm stumped. I got it working in a rental Ford Fiesta, but I don't remember the exact method. But it was something like this.
Try the radio with a USB stick drive to see if the radio even works that way
Sent From My Pocket
Sorry thegregbradley, I tried it but it didn't work.
I tried doing a couple of different things similar to that too, and it didn't work either.
As far as using a regular USB drive with some music files on it, it works fine! My friend used her iPod and that worked fine too. I don't see why it has such a problem with Android though...
In doing some reading, I have discovered information that says you need to turn USB debugging OFF for this to work...
Info comes from this thread:
http://www.hondacivicforum.com/foru...nics-10/2012-usb-android-support-88695/page2/
If not that, then I wonder if it's a problem of file management on your SD card? Just as a test, try putting your songs directly in your root folder. Or at most, one folder deep. The Fiesta I rented had bluetooth functionality, so I ended up doing it that way, as it was faster and less problematic. But I definitely would rather just plug it in if it just worked that way.
Iv found that running a rooted rom with debugging off and in mounted mode works great in my car.... No other combo has worked for me
@pwncloud, did you ever get this to work with USB debugging off? Just curious
I have debugging off in my car too and no mods to my android, it's a G2 and I get the same error on my 2012 Civic LX.
To update, no I never got it to work. I've settled with an aux cable.
Hi all, I've been lurking the forums since bout September of 2012. I haven't really been posting here, mainly just gathering ROMs, kernels, help etc.
Anyways, my Nexus 7 isn't being recognized by Windows 8, Windows 7, Windows Vista, or even Ubuntu. this leads me to belive this is caused from the tablet. I have installed numerous drivers, but with no luck. Recently, I noticed when I boot into recovery, and the tavlet uis on the Google screen, my computer recognizes it as, "Unknown Device." Soon after it passes the Google screen and boots into TWRP Windows can't detect it anymore. My tablet says it's connected via AC, not USB - which is probably why I can't transfer files. I have MTP checked, and I tried PTP too. I've tried enabling and disabling debugging with no luck still. I'm using the OEM charger for the device, and I have tried using multiple cable with no dice.
"So a new possible way of fixing this after having contacted Asus support. They had me turn of my Nexus 7 and then hold the Volume Up + Power button for 30 seconds and then hold only the power button for 60 seconds. I was told this is to remove static from the mother board. USB Charging, USB Transfer, and Wireless Charging (which is what made me notice the issue) now work. The only problem I have now is that the cord that came with the tablet seems to be a bit loose and will cause it to stop charging when I don't just let it sit on a table."
That was suggested on a different forum, but that didn't work for me neither.
ADB nor fastboot cannot see my device as well.
Any help?
have you tried plugging the cable in to a different usb port?
What drivers are you using? Try the generic USB ones here, which I use with no problem at all: http://developer.android.com/sdk/win-usb.html
For best results, go to Device Manager first, set it to show all hidden devices, then delete (not just disable) any previous drivers you may have installed.
"They had me turn of my Nexus 7 and then hold the Volume Up + Power button for 30 seconds and then hold only the power button for 60 seconds. I was told this is to remove static from the mother board."
I feel like hitting my head against a brick wall when hearing such advice.
timrock said:
have you tried plugging the cable in to a different usb port?
Click to expand...
Click to collapse
Yes, I've tried USB 3 ports, and USB 2 ports with no success.
Pandae said:
What drivers are you using? Try the generic USB ones here, which I use with no problem at all: -snip-
For best results, go to Device Manager first, set it to show all hidden devices, then delete (not just disable) any previous drivers you may have installed.
"They had me turn of my Nexus 7 and then hold the Volume Up + Power button for 30 seconds and then hold only the power button for 60 seconds. I was told this is to remove static from the mother board."
I feel like hitting my head against a brick wall when hearing such advice.
Click to expand...
Click to collapse
Gotta love Asus' tech support.
Try Nexus Root Toolkit, it has a nice walkthrough that shos you how to first uninstall any existing non-working usb drivers. Then just try its options one by one and you'll have working drivers in minutes.
I gave up even trying to get my original N7 and my N7 (2013) to be recognized by any PC. What I do instead is use a free app of the day I got from Amazon a while back called Wifi File Explorer. Run the app and you can access the file system from your PC. Upload, move, copy and create folders.
It's worked for me for a while now. I'm sure there are other free apps that will do the same.
[MOBILE] Nexus 7 (2013)
VertzxD said:
Yes, I've tried USB 3 ports, and USB 2 ports with no success.
Click to expand...
Click to collapse
Have you also tried usb ports on the back of the PC? Those are directly on the motherboard, whereas usb ports on the front of a PC are almost always via a usb hub connected to the MB. I know of instances where this makes a substantial difference (device being recongnized or not). You might try it (if you haven't already).
Edit : also try disabling AV software and possibly firewall. But admitedly I have personally never had any issues regarding device not recognized due to this.
This was my solution.
Hello all,
I have a nexus 7 2013 and I am looking for a kernel that supports otg plus charge. Now, I know elemental x (by flar2) and a few others have this but the ones I have found do not support hot swap, or unplug and replug without rebooting. I am pretty sure Timurs kernel supports this but he wants $36 to buy it and I would rather not spend the money without trying it out first. Specifically, I have a fixed in-car installation and a febon100 UVC video grabber to display a backup camera. When the car shuts off, the febon will be disconnected from the usb side of the nexus, and the only way to reconnect it is to reboot the tablet with power connected. Anyone have any ideas? Thanks for the help.
Ok so I figured part of it out. After the device looses and regains power, these two commands simulate the usb disconnect and reconnect and seems to work (only tried it a couple times)...
Code:
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/unbind
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/bind
However, I have another issue. I am using the elementalx kernel on android 4.4.4 (currently on Carbon rom but have tried stock and other roms as well with same outcome). When the tablet reboots with the otg cable connected, it does not charge when it first starts up. To charge it, I have to physically unplug and replug the cord in the nexus. Any ideas?
bigc9731 said:
Ok so I figured part of it out. After the device looses and regains power, these two commands simulate the usb disconnect and reconnect and seems to work (only tried it a couple times)...
Code:
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/unbind
echo "2-0:1.0" > /sys/bus/usb/drivers/hub/bind
However, I have another issue. I am using the elementalx kernel on android 4.4.4 (currently on Carbon rom but have tried stock and other roms as well with same outcome). When the tablet reboots with the otg cable connected, it does not charge when it first starts up. To charge it, I have to physically unplug and replug the cord in the nexus. Any ideas?
Click to expand...
Click to collapse
you find a fix for this? i will try that command you posted but i need it to run at startup automatically if it works.
quicksilvr2006 said:
you find a fix for this? i will try that command you posted but i need it to run at startup automatically if it works.
Click to expand...
Click to collapse
Just use tasker to run the commands at startup...
Does this set of command still work with lollipop? I just tried a few times and it seems to have made no difference.
Thanks in advance!
Yeah im in the same boat. Soooooo many problems with this ****ty tablet. Knew i should have installed an iPad. They said this is the 'best' of android. It's ****ing terrible. People who are thinking of installing an android into your car? A word of advise. Dont do it.
-guy who has worked on nexus 7 2012, AND 2013 car install for more than a year.
jimmng said:
Yeah im in the same boat. Soooooo many problems with this ****ty tablet. Knew i should have installed an iPad. They said this is the 'best' of android. It's ****ing terrible. People who are thinking of installing an android into your car? A word of advise. Dont do it.
-guy who has worked on nexus 7 2012, AND 2013 car install for more than a year.
Click to expand...
Click to collapse
Do you feel better now?
Sent from my LG-D850 using XDA Free mobile app
It's been almost a year any way to accomplish charging without having to physically unplug the OTG and plug it back in. Im have timurs kernel but I want to use elemental so I can use marshmallow. Timur accomplished it somehow. Someone has to know how.
Qi Wireless Charging
samt3 said:
It's been almost a year any way to accomplish charging without having to physically unplug the OTG and plug it back in.
Click to expand...
Click to collapse
It is actually trivially easy to accomplish - on any kernel - it is called Qi Wireless Charging.
Android 6.0.1 kernel Quanta-V7-Flo with 'USB Host Mode Charging'
samt3 said:
It's been almost a year any way to accomplish charging without having to physically unplug the OTG and plug it back in. Im have timurs kernel but I want to use elemental so I can use marshmallow. Timur accomplished it somehow. Someone has to know how.
Click to expand...
Click to collapse
Test results for Android 6.0.1 Stock + Kernel 'Quanta-V7-Flo' with active 'USB Host Mode Charging' and inactive 'fast charging' (N7 is only is use when its connected to the USB Power):
Ampere values checked with one of the cheap 'USB Charger Doctor Voltage Current Meter Mobile Battery Tester':
0.45 A for N7 only
0.61 A for N7 + USB Ethernet adapter
I don't use the N7 in a car setup but this should be important for such setups:
-If the USB Y cable is connected before powering on the N7, the USB device was usable in Android after startup without need for reconnecting the USB cable
-If the USB was unplugged and reconnected the device, it was usable in Android
-Important: If the N7 goes to sleep, it can't recover the USB charging and USB devices after waking. You should set the display timeout to always on, which is right for a car setup or am I'm wrong?
I'm happy! :good:
I tried quanta. It does work except for on initial boot. Have to unplug and plug it back in to charge. Then it works fine turning the key on and off for power. However it doesn't mount the OTG devices again without unplugging it and plugging it back in.
Edit: I also have another problem was at work and didn't have time to add it. But my Nexus thinks it's still charging after disconnecting it from power supply through the OTG cable. When I turn the key off it quits charging for about 1 second then switch's back to saying it's charging again and continues to say it's charging even after cycling the key on and off. Only way to fix it is to disconnect the OTG straight from the tablet and plug it back in or boot it into recovery then back to system. Has done this thru multiple roms and kernels. Only kernel it doesn't do it on is Quanta. The thing is it didn't use to do it at all no matter what rom or kernel I was using. I even went as far as to change the charging port board cause I had another one in a old junk Nexus I have and still didn't fix it.
samt3 said:
I tried quanta. It does work except for on initial boot. Have to unplug and plug it back in to charge. Then it works fine turning the key on and off for power. However it doesn't mount the OTG devices again without unplugging it and plugging it back in.
Edit: I also have another problem was at work and didn't have time to add it. But my Nexus thinks it's still charging after disconnecting it from power supply through the OTG cable. When I turn the key off it quits charging for about 1 second then switch's back to saying it's charging again and continues to say it's charging even after cycling the key on and off. Only way to fix it is to disconnect the OTG straight from the tablet and plug it back in or boot it into recovery then back to system. Has done this thru multiple roms and kernels. Only kernel it doesn't do it on is Quanta. The thing is it didn't use to do it at all no matter what rom or kernel I was using. I even went as far as to change the charging port board cause I had another one in a old junk Nexus I have and still didn't fix it.
Click to expand...
Click to collapse
Did you try the glitch kernel?
0xcafebabe said:
Did you try the glitch kernel?
Click to expand...
Click to collapse
I've used it before but not on my current setup.
Assuming one of these kernels provides OTG + Fast Charging, what are the options for the Power-Down + Deep Sleep, then Power-Up + Wake?
on CM 12.1 and I can get SOME flashdrive to work otg, SOME of the time.
I tried stickmount and ex kernel, but it's the same (worst on ex kernel, can't even detect otg)
I tried using a powered usb hub to see if that was the issue (for some reason, the microusb port isn't giving power to the drive. is this normal?)
after several more testing, seems like there are 2 issues that is causing otg not to work all the time.
1. Power. Doesn't seem to be able to provide enough power for self powered usb devices (ie. flash drive, dac, etc..) or enough to maintain connection.
2. Microusb port. might be one of the reason why devices aren't getting enough power and/or not being detected.
I really think it's a power issue cause everything seems to run fine if I connect it to an external powered usb hub. I tried the same setup (flash drive and dac to an usb hub, no power) with my 1st gen Nexus 7 and it had zero issues.
so is there a way to raise or maintain 5v OUTPUT out the microusb port so it doesn't randomly disconnect otg devices?
I've been able to power A pretty heavy duty usb audio interface. I think I may have had that issue A couple times, but it was never A big deal for me.
I don't remember having the problem after enabling "OTG+Charging" in Elemental X kernels' aroma installer. Did you use that?
Also possibly (not likely) A Cyanogenmod issue. I haven't used that on the nexus 7 in A while though.
Wierd that flash drives don't stay on. Does it do that frequently? I've looked into "overvolting" the usb port A long time ago, it seemed to need A kernel change
Just wondering if Android Auto for connected car displays stopped working for anyone as of yesterday or today. I'm skeptical of another Google "back end experiment" that caused it to stop working. I have a Ford with Sync 3
Symptom: Plug phone into car, nothing happens. Phone only charges and will even say USB is connected.
I've done some basic and partially in depth trouble shooting. It most likely couldn't be caused by any updates on Car infotainment system or my Phone because it has been working (unless there was a back end play services update that was pushed out).
From the obvious to less obvious:
-Tried rebooting phone and restarted car
-Tried using a different USB A to C cable (Anker ones have worked perfectly for me)
-Tried using secondary USB port in car
-Tested phones ability to connect to a PC and transfer data, no issue
-Threw music onto a USB flash drive and plugged it into car, no issue
-Tried turning on USB debugging on phone, no change (not sure if this would have even helped in first place).
I'm at a loss right now. It does not make any sense.
I do not have another android phone to try or an iPhone to test CarPlay unfortunately.
Literally had the same thing happen to me on Sync 3 last week. I just deleted the car from the Android Auto app and deleted the phone from Sync 3. After that I was able to use Android Auto again after going through the setup prompts. No issues since.
Works fine for me on my 2018 silverado
no issues on 2017 Sierra
Here it works perfectly
bigblueshock said:
Just wondering if Android Auto for connected car displays stopped working for anyone as of yesterday or today. I'm skeptical of another Google "back end experiment" that caused it to stop working. I have a Ford with Sync 3
Symptom: Plug phone into car, nothing happens. Phone only charges and will even say USB is connected.
I've done some basic and partially in depth trouble shooting. It most likely couldn't be caused by any updates on Car infotainment system or my Phone because it has been working (unless there was a back end play services update that was pushed out).
From the obvious to less obvious:
-Tried rebooting phone and restarted car
-Tried using a different USB A to C cable (Anker ones have worked perfectly for me)
-Tried using secondary USB port in car
-Tested phones ability to connect to a PC and transfer data, no issue
-Threw music onto a USB flash drive and plugged it into car, no issue
-Tried turning on USB debugging on phone, no change (not sure if this would have even helped in first place).
I'm at a loss right now. It does not make any sense.
I do not have another android phone to try or an iPhone to test CarPlay unfortunately.
Click to expand...
Click to collapse
happens to me every 3-6 months.
Swapping out the cable resolved it every time.
ya dude you need to try some different cables. that should always be your first step if there have been no updates.
Thanks for the replies. I deleted and unpaired AA from my phone and my car with no luck.
I actually had my coworker who has a Pixel 2 XL plug his phone in to my car. He had no issues at all even after multiple tries. Mine still wont connect. We're both on Pie with same security patch level. Did try tried Multiple new cables and still no luck (the anker high quality ones).
I found this thread incase it starts happening to anyone...
https://productforums.google.com/fo.../PWBrDUXzR4o;context-place=forum/android-auto
Something I picked off of that topic was some USB patches/features that went in to effect between Pie release and last month security patch.
I may just wait a month. Maybe another security patch which tweaks USB or 9.1 will drop fixing my issue. We shall see. At least I know its not my car or my cables.
Go into apps and check your "play services" versions between the two phones. Google controls a lot of **** through that app
Or just try to clear your usb port
Thanks for the replies. After the October patch I'm back up and running.
Lack of communication between departments at Google baffles my mind.