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Hi,
I've used a USB charger on all my phones for a few years now. Just plug phone in on my desk and no worries. However my new Defy doesn't seem to take a charge from the USB on my network device (it's not a full PC). However my HTC HD2 could get a charge from it so:
1. Is the Defy more power hungry that it won't charge from an ND (I assume NDs put out less power over USB than a PC)
2. Does it just not show on the battery on the Defy that it's charging?
3. Have I missed something simple? I've gone into USB connection and selected charge only. I can't install drivers on the ND though, could that be it? The ND hasn't said it's found new hardware either though.
Thanks in advance for advice
motorola has a notorious reputation on this, they require a usb driver to be installed for charging some of their phones...
i think there's some strange combinations at work about this but, just use a standalone charger and it should solve the problem.
Thanks. I thought it would be that.
Bit short of plug sockets at work but I'll figure something out
Another point to note is that the Defy is very fussy regarding USB cables. A lot of cheap ones will pass data but no charge.
martint235 said:
Thanks. I thought it would be that.
Bit short of plug sockets at work but I'll figure something out
Click to expand...
Click to collapse
Would you consider hacking a usb cable to make a charging lead? A standard usb lead plugged into a PC will try to enumerate with the PC before it starts to draw power from the PC. However if you hacked a usb cable and shorted the DM and DP lines on the phone side, the phone 'should' detect the cable as a mains charger rather than a PC, thus enabling charge without any drivers on the PC. It would be something like the attachment...
Thanks for all the replies. Although my USB cable wasn't cheap and was capable of charging an HD2 which must be more power hungry than a Defy, it turns out the Defy is really fussy. It's charging fine through the Motorola USB lead on my network device.
My USB loading experience
Hi,
just to share my exp:
- loading with most USB loaders: fine
- My Car loaders and my multi power adaptor with usb can load everything but the defy
- on Computer no problem (some say you will have better battery performance when loading on non Computer: I can´t see a difference)
- cable doesn´t change anything
technome said:
Another point to note is that the Defy is very fussy regarding USB cables. A lot of cheap ones will pass data but no charge.
Click to expand...
Click to collapse
I've bought a couple of USB cables from ebay. My Defy seems to connect and disconnect when using them, like it has a loose connection. If I use the Motorola one, of course it's fine!
I just recently got a Samsung Galaxy Note 10.1 and so far I'm quite happy with it --- except one thing, I cant find a cable that lets me charge the tablet *and* use the USB Host (OTG) port... (i.e. read files off a USB drive or play a game with a USB game pad while keeping the tablet plugged in)
Is there a way to do this? it would seem to me that all it needs is a splice to give power to the Power +/- pins on the connector while keeping the OTG Data +/- pins active...? (I know nothing about the pinout so I could be wrong on this)
Just to be clear I want to use the OTG adapter WHILE CHARGING (I've found one device that gives both these options but says "only one function may be used at a time")
Ideas?
Discussed dozen times in 10.1 forum. Actually it is not possible. Build an otg + power cable myself but it only works with timing and with a specific procedure... quite annoying. Wait for a custom rom somewhere in the future as I do.
You may have issues trying this, OTG cables are iffy under Jelly Bean. Some may work, some may not. In fact, Google removed references to OTG support for Nexus devices last November since OTG is so spotty. Splicing a cable that might work may kill it. Decent battery-powered USB and SD hubs are available and bypass the OTG problems. I have the RavPower RP WD01 and love it. The USB port will support drives upto 3T. It also has an SD card slot.
mke1973 said:
You may have issues trying this, OTG cables are iffy under Jelly Bean. Some may work, some may not. In fact, Google removed references to OTG support for Nexus devices last November since OTG is so spotty. Splicing a cable that might work may kill it. Decent battery-powered USB and SD hubs are available and bypass the OTG problems. I have the RavPower RP WD01 and love it. The USB port will support drives upto 3T. It also has an SD card slot.
Click to expand...
Click to collapse
Powering the USB devices isn't a problem, I have a nice hub that powers them without issue, even extremely power-hungry devices. I was wanting to charge the tablet's battery while using the OTG adapter (original thought was for USB-gamepad-ing since high-requirement games drain battery, but I've since started using a PS3 controller over bluetooth so I can use the OEM charge cable and wireless for gaming --- but USB drives I'd have to copy the files over to internal flash or a MicroSD card to view while charging and i've found that the cards dont like files that are 8gb in size... (FAT-32 restriction iirc))
47kt said:
Discussed dozen times in 10.1 forum. Actually it is not possible. Build an otg + power cable myself but it only works with timing and with a specific procedure... quite annoying. Wait for a custom rom somewhere in the future as I do.
Click to expand...
Click to collapse
I saw that when I google'd but thought maybe there had been some new developments (especially with how this site's members love to tinker with electronics and write custom firmware). It's not a huge issue, since the Note 10.1 has amazing battery life (it's actually matching or doing BETTER than my iPad in most circumstances) I just like to never run the battery down low.. (why cant tablets have user-replaceable/swapable batters like most phones?!)
Thanks for the info!
I'm not able to get to the bootloader screen because the front usb port is not functioning on my unit. Has anyone been able to use one of the USB ports on the back to get to ADB and/or get to the bootloader? Is this a known issue with a workaround? I've done quite a bit of searching and have not turned up any solutions. Considering what is involved in shipping this back, I'd much rather figure something out. Thanks in advance for any help!
Edit: I should mention that I have used the adbon password and it does acknowledge that adb has been enabled. Just nothing seems to work on the front port. When I connect my Linux machine and run lsusb nothing shows for the unit. I have considered buying or making a USB-A to USB-A cable to connect my computer to one of the back USB ports, but I'm concerned about how these back USB ports are designed. Is it as simple as a built-in OTG cable? If so I'm probably fine. If it is more like a computer's USB port I could damage my laptop, my headunit, or both. I'd really like to hear if anyone else has had to deal with this. Unfortunately I haven't verified if the front USB will charge a phone. This is my next step.
dutchhome said:
I'm not able to get to the bootloader screen because the front usb port is not functioning on my unit. Has anyone been able to use one of the USB ports on the back to get to ADB and/or get to the bootloader? Is this a known issue with a workaround? I've done quite a bit of searching and have not turned up any solutions. Considering what is involved in shipping this back, I'd much rather figure something out. Thanks in advance for any help!
Edit: I should mention that I have used the adbon password and it does acknowledge that adb has been enabled. Just nothing seems to work on the front port. When I connect my Linux machine and run lsusb nothing shows for the unit. I have considered buying or making a USB-A to USB-A cable to connect my computer to one of the back USB ports, but I'm concerned about how these back USB ports are designed. Is it as simple as a built-in OTG cable? If so I'm probably fine. If it is more like a computer's USB port I could damage my laptop, my headunit, or both. I'd really like to hear if anyone else has had to deal with this. Unfortunately I haven't verified if the front USB will charge a phone. This is my next step.
Click to expand...
Click to collapse
My front USB also doesn't work. I even got mini to standard USB cable with unit, but plugging flash drive into it doesn't produce any reslt.
I also plugged extension cable to one of back USB ports and tried it (plugibg same USB flash) but it doesn't work either.
So I'm also confused.
Does that mean you are still running the stock ROM? I have been hesitant to install the custom ROM because they say you must be able to get into the bootloader even though I couldn't find a step in the process that required it.
Regarding the USB ports not working at all, you may find that you need to use a powered USB hub. I've seen reports of USB devices acting up due to the low power. This is one of the reasons I thought it might be safe to use the rear ports with my computer. (My first real test is going to be mangling a male-to-male USB cable so only the data lines are connected to see if I can get those rear USB ports to talk to the computer. I figure that way there is no chance of frying any circuits.. Each side already has its own power and I don't believe any signaling is sent via the power pins.)
On my unit (MTCB-KGL-V2.80), I have used a T-Mobile USB broadband modem successfully on the rear port, so I know rear ports are live. I did take it apart to see if something was obviously wrong with the front port, but nothing jumped out at me.
So I have a bit more information on my headunit. BTW, I have the BMW E46 model with MCU MTCB-KGL-V2.80.
On my system, both the front USB port and the rear 3G USB port are wired as device ports connected to an AU6258 USB controller (http://www.sunnyqi.com/upLoad/product/month_1403/201403162331285643.pdf). I don't remember exactly which USB ports they are connected to, but I believe the 3G port is connected to port 2 (pins 6 & 7) and the front USB port is connected to either ports 3 or 4 (pins 9 & 10 or 11 & 12 respectively). Nothing is connected to port 1 or to the upstream port. The other rear USB port is wired directly to the MTC_RK3188 board.
All three ports are wired with only four pins, so I'm concerned that none of them could work with the computer. The USB controller doesn't have USB ID pins, so does that mean that the 4 downstream ports are OTG and the upstream port is for a computer? Unfortunately I don't know the hardware side.
dutchhome said:
Does that mean you are still running the stock ROM? I have been hesitant to install the custom ROM because they say you must be able to get into the bootloader even though I couldn't find a step in the process that required it.
Regarding the USB ports not working at all, you may find that you need to use a powered USB hub. I've seen reports of USB devices acting up due to the low power. This is one of the reasons I thought it might be safe to use the rear ports with my computer. (My first real test is going to be mangling a male-to-male USB cable so only the data lines are connected to see if I can get those rear USB ports to talk to the computer. I figure that way there is no chance of frying any circuits.. Each side already has its own power and I don't believe any signaling is sent via the power pins.)
On my unit (MTCB-KGL-V2.80), I have used a T-Mobile USB broadband modem successfully on the rear port, so I know rear ports are live. I did take it apart to see if something was obviously wrong with the front port, but nothing jumped out at me.
Click to expand...
Click to collapse
No I flashed Malaysk ROM from GPS SD card. No problems. Just follow instruction. I had luck that I didn't need to recover from USB.
Did you tried with USB powered hub? I don't have one to try it myself.
RK3188 1024x600 front USB not working confirmed
pa.ko said:
My front USB also doesn't work. I even got mini to standard USB cable with unit, but plugging flash drive into it doesn't produce any reslt.
I also plugged extension cable to one of back USB ports and tried it (plugibg same USB flash) but it doesn't work either.
So I'm also confused.
Click to expand...
Click to collapse
I checked on my Linux workstation with
Code:
lsusb |wc -l
plugging and unplugging all three USB cables and the number did not change. BTW where did you use the "adbon" command? The only place that I could even try was at Settings > Factory Settings. Regards Flint
im having a problem connecting my pixel 2 xl to my desktop pc via usb c
here are some things
when i connect phone to usb-c port nothing happnes. no charging, no usb options notification
old phone, nexus 6p, uses same port and cable and works just fine
pixel 2 xl will connect to usb-c port on my laptop just fine
will connect to usb-a port with an a-c cable just fine
if i boot in to safe mode the desktop will recognize but it takes 5 minutes or so of being plugged in
windows 10 and usb drivers are up to date
any ideas??
thanks guys
First thing to try would be another cable and/or another USB-C port.
On the first Pixel XL, after Oreo came out, it very picky about these. It took me many tries of three cables and two USB-C ports until the images would flash properly. Two of the cables were straight from Google, and the third one was certified as a good cable. They all worked fine for everything on Nougat.
I realize that you're only trying to connect it but those are always the first things to try.
I did try other cables. Both work on my 6p that has Oreo. I only have one usb-c port on my desktop unless I buy an expansion card and I'd rather not. I did try my laptops usb-c port and that works
The default option when plugging phone into USB on a laptop or PC is charging. You can see this from notification area.
Select this and change it to File Transfer. Then you should be able to see it connected.
I'm not getting the USB options notification unfortunately
knock.back said:
I'm not getting the USB options notification unfortunately
Click to expand...
Click to collapse
Do you have USB debugging enabled?
If so, then when you first plug it into the PC, you should be prompted on the phone to allow the PC/Device to connect to your phone. Allow it always.
USB debugging is not turned on
knock.back said:
USB debugging is not turned on
Click to expand...
Click to collapse
Turn it on.
knock.back said:
USB debugging is not turned on
Click to expand...
Click to collapse
That is your issue, you need to turn on USB Debugging to enable communications between the Laptop/PC and Phone. Once enabled, and you connect them. Drop the notification window and select File Transfer.
Have you tried toggling PTP and MTP? That is how I got my Nexus 6P tp bre seen as storage (adb worked fine).
I didn't have this problem with my Pixel 2 XL using the same cable and port.
I don't know if this will have any effect but on the pc, plug to the usb ports on the back that are direct to the motherboard instead of usb headers on the top/front of pc.
I have this issue with a TomTom satnav and a Mio miview dash cam. Unless they are plugged in on back pc / with Windows 10 doesn't recognize
Sent from my XT1572 using Tapatalk
I have been having USB data transfer problems as well.
My Pixel 2 XL sometimes chokes on files when transferring from MacOS with Android File Transfer. I have tried different cables, different computer ports, different computers. I have tried USB debugging and Safe Mode. I have even tried factory reset. Sometimes it chokes on the same files, sometimes it is different files. Yet my Pixel XL handles those same files without any problem with the same cables and computers.
Data transfer stops completely. Sometimes a reboot of the phone is required. Sometimes a reboot of the phone and computer. And sometimes even a factory reset doesn't clear the problem -- it has unable to detect any other connected phone to transfer files during setup.
I was only able to bypass this file transfer problem by sending the files as a zip.
I have contacted Pixel 2 Support about this. They seem very puzzled. They said that I should be hearing back from an "upper level", but that was 5 days ago now.
knock.back said:
im having a problem connecting my pixel 2 xl to my desktop pc via usb c
here are some things
when i connect phone to usb-c port nothing happnes. no charging, no usb options notification
old phone, nexus 6p, uses same port and cable and works just fine
pixel 2 xl will connect to usb-c port on my laptop just fine
will connect to usb-a port with an a-c cable just fine
if i boot in to safe mode the desktop will recognize but it takes 5 minutes or so of being plugged in
windows 10 and usb drivers are up to date
any ideas??
thanks guys
Click to expand...
Click to collapse
Same here man, contacted google this morning and support said this was how it was with his brother's phone as well. Had no suggestions.
EDIT: This is with USB Debug on or off, no options to charge or select anything, takes about 5 minutes and then starts working as normal. Unfortunately, the fingerprint scanner stopped working as well. Getting a new one sent out, I'll follow up and let you know if it has the same behavior.
EDIT: 11/6/17 - Got new phone in. Fingerprint issue is resolved but the same USBC issue is not. Phone does charge from it when off.
I've got a very similar problem here with Pixel 2 XL manufacture date October 10th. After some extensive troubleshooting, I'm certain this is a hardware issue.
When connecting USB-C to USB-C with my laptop, the phone will start charging but will not register that it is connected to a computer unless USB debugging is enabled. Even then, with debugging enabled I will usually, but not always get the option to switch from charging mode to MTP/file transfer mode, but when I try to switch the phone will just disconnect and reconnect several times and revert back to charging mode. It has only every actually established a data transfer connection 3 times out of probably near 50 attempts over the past week.
I have tried two different type-C to type-C cables, doesn't make a difference.
I had the pixel 1, and had no issues at all with the same connection and with either cable, so I can safely rule out the cables or the laptop as the problem.
The issue was present with 8.0 firmware and is still present with 8.1 beta.
I did try booting into safe-mode, and the problem was still present.
I did a full factory reset, and the problem still persists.
This issue is specific for type-C to type-C, when I use a USB-C to USB-A cable, the phone will immediately recognize a data connection and allow me to switch from charging mode to MTP/File transfer mode, regardless of whether USB debugging is enabled or not. Though the phone does occasionally hiccup and disconnect/reconnect itself so it may take a second or third attempt at switching to MTP mode, but then it will establish a steady connection where I can access the phone's data.
I just got off the phone with google support, the rep mentioned he has heard of a few instances of a similar issue, and since I've already exhausted all possible troubleshooting they would have recommended, they are sending me a replacement.
I've been a loyal google customer since the Nexus 6P. It's a shame the LG's quality control was so shoddy with this product, now I have to wait and see if the replacement doesn't have the same issue or if it ends up having worse blue screen shift than the phone I am replacing.
At least I can say that google's customer support is on point, kudos to them for trying to make this right.
Alright well I may try this. IDK if it's worth an RMA tho, my a to c cable works fine, I just more or less can't charge off of it because it's too slow
knock.back said:
Alright well I may try this. IDK if it's worth an RMA tho, my a to c cable works fine, I just more or less can't charge off of it because it's too slow
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Click to collapse
Might not be worth RMA to you, but considering that it's a brand new $1,000 device (XL 128GB) I'd want to make sure I had one that doesn't that doesn't come with (more) problems out the gate... and since type C is the new standard, eventually replacing type A, and google is promising 3 years of updates, I'd like to ensure mine is future proofed as I intend to keep mine for a while.
I have the same issue and apparently so do lots of others. Did all the norm right off the bat, usb debugging on, tried every usb port, toggled PTP, MTP, etc. (currently left on MTP). An option pops up to choose either "transfer files" or "charging". It will never leave "charging" mode. The radio button will not select transfer files. Super annoying that a 1k phone has ridiculous hiccups for such basic hardware components.
Has anyone fixed this issue? I have the exact same one. My OG Pixel on Oreo worked fine on my motherboards USB c port. The Pixel 2 does not work at all. I can use any USB a port and it works... This is funky
Sent from my Pixel 2 using Tapatalk
stevemw said:
Have you tried toggling PTP and MTP? That is how I got my Nexus 6P tp bre seen as storage (adb worked fine).
I didn't have this problem with my Pixel 2 XL using the same cable and port.
Click to expand...
Click to collapse
I can get my comp to see my XL 2 but I can't get adb to work. Any ideas?
jerflash said:
Has anyone fixed this issue? I have the exact same one. My OG Pixel on Oreo worked fine on my motherboards USB c port. The Pixel 2 does not work at all. I can use any USB a port and it works... This is funky
Sent from my Pixel 2 using Tapatalk
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Click to collapse
I haven't found any fix yet.
Stuck with the super slow A to C cable
Hi guys,
I had a xiaomi.eu beta rom installed from feb/18 and i decided do update to the last beta available 8.4.28 through twrp. After that i lost quick charge and my usb connection. My pc (or any) dont recognize my phone, when i plug the usb into my pc nothing happens, nothing new in the device manager. I tried different cables and charges. Cleaned my phone usb type c port with isoprophyl alcohol and a electronic contact cleaner, didnt fix. I decided to do a full wipe, installing a Global stable 9.5.2 do see if it would fix my problem, but it didnt workout. After that i foundout thay i lost my twrp and a generic recorery from xiaomi was instaled. Yesterday i got a update via OTA to 9.5.4, didnt fix it. Now i have a phone with slow charge, no usb connection, no twrp, no root. My only solution now is to find an APk that root my phone so i can install twrp using flashify and try the rom from february i was usong before all of this. Does anyone have/had this issue?
Does this also happen when connecting with other computers?
Yes, i tested with my laptop and my computer at work. Also, my otg doesnt work. I can reboot to Fastboot mode, but i my pc doesnt regognize this way too.
i have the same problem. currently i am on V9.6.1.0.NAGCNFD. and i lost my USB connection to my pc. as well on all QC chargers i have, i cannot charge my device any more. it starts to charge for 2-3 seconds and then stops charging. slow charging via regular usb ports/chargers is the only function left on the built in usb-c port.
i tried various pc's, cables & chargers.
rainersc said:
i have the same problem. currently i am on V9.6.1.0.NAGCNFD. and i lost my USB connection to my pc. as well on all QC chargers i have, i cannot charge my device any more. it starts to charge for 2-3 seconds and then stops charging. slow charging via regular usb ports/chargers is the only function left on the built in usb-c port.
i tried various pc's, cables & chargers.
Click to expand...
Click to collapse
I fixed it on my mi5s. it was actually a hardware problem . after changing the lower board containing the USB-C connector inside of my phone, it all is working again.
the board is available for a couple of USD on aliexpress.
Just wondering - did you manage to fix this problem? I have the same issue - but AliExpress USB-C module replacement didn` help.
Mine is working fine since i replaced that module.