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#1 2013-11-09 22:02:40

blue_justice
Member
Registered: 2013-05-23
Posts: 10

[Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Hi all,

I recently managed to change the sku on a Chinese bought Asus Transformer Prime to the WW sku on android 4.2.1. Prior to that I rooted the device via motochopper after unlocking the bootloader using the app provided by Asus. However, due to negligence on my part I failed to preserve the root and when I went to root it for a second time via motochopper it was unrecognised in ADB, not only that, but it doesn't even display in the output of lsusb.

USB debugging is enabled, and I already uninstalled and reinstalled android-sdk, android-udev, android-sdk-build-tools and android-sdk-platform-tools. I also modified my /etc/udev/rules.d/51-android.rules file to include the following:

#ASUS
SUBSYSTEM==usb, SYSFS{idVendor}==0b05, MODE=0666

or

SUBSYSTEM=="usb, ATTR{idVendor}=="[0b05]", MODE="0666"
SUBSYSTEM=="usb, ATTR{idVendor}=="0b05",ATTR{idProduct}=="4c81",SYMLINK+="android_adb"
SUBSYSTEM=="usb, ATTR{idVendor}=="0b05",ATTR{idProduct}=="4c81",SYMLINK+="android_fastboot"

When I insert the USB cable into any of my three USB ports the screen on my tablet does go on, but that is about it -- there doesn't seem to be anything in the notification area. I have two cables so it isn't a cable issue either. Does anybody have any idea how I could resolve this? Any and all help is very much appreciated.

Thank you for your time

Last edited by blue_justice (2013-11-16 21:48:56)

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#2 2013-11-09 23:06:00

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Does dmesg give any output when you plug it in?

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#3 2013-11-10 07:45:20

blue_justice
Member
Registered: 2013-05-23
Posts: 10

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

dmesg doesn't seem to give any output unfortunately.

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#4 2013-11-10 17:29:19

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Then the device I think is just totally unrecognized.  I think the only other test would be to plug it into a windows or mac machine an see what happens.  But if no dmesg output is generated upon plug, I would venture to guess that the device itself is borked, and not Arch.  sad

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#5 2013-11-10 18:22:36

blue_justice
Member
Registered: 2013-05-23
Posts: 10

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Thanks for the help. I guess I will just have to find a way to downgrade the firmware to ICS or something without a PC. Hopefully I will get it to work in a Windows machine tomorrow at a relative's office, and then possibly downgrade from there. There seems to be a couple of weird things wrong with the device, such as Asus Sync breaking the settings app, along with not being able to change to PTP mode in storage settings. I will post an update tomorrow.

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#6 2013-11-11 16:58:39

blue_justice
Member
Registered: 2013-05-23
Posts: 10

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Tested it on a Windows PC -- still nothing.

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#7 2013-11-11 17:01:36

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Yeah, I'm going to have to say that it is something with your Transformer Prime.  Unfortunately, this could be caused by both a hardware or a software issue, so pinning that down might not be entirely easy.

I don't know what you have on that tablet, but if you wanted to see if it is software, wiping and installing the original image (or a fresh image of your choice) would at least tell you this much.

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#8 2013-11-13 09:34:00

blue_justice
Member
Registered: 2013-05-23
Posts: 10

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

I think that it is definitely a software issue. I think that the correct route is to try and reload the original image, however, the major issue is that I don’t have and can’t seem to get root access without adb access. I don’t really know if there are ways to get around it without rooting the device.

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#9 2013-11-13 16:16:45

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Indeed this is a problem.  But I think that you would do a lot better asking something like this on the xda-developers forums.

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#10 2013-11-13 17:22:06

blue_justice
Member
Registered: 2013-05-23
Posts: 10

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

WonderWoofy wrote:

Indeed this is a problem.  But I think that you would do a lot better asking something like this on the xda-developers forums.

I have asked them -- I will be sure to post the results. Thank you for your efforts.

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#11 2013-11-16 10:27:38

blue_justice
Member
Registered: 2013-05-23
Posts: 10

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Unfortunately I didn't receive any responses on the XDA developers forum or the Transformer forums. However, I did manage to fix the issue. I realized that I could access fastboot when the device was in the bootloader. I was then able to install TWRP(I had to use this guide as the newest version on the Team Win website wasn't working so well). From there I could flash the stock ROM and everything seems to be peachy.

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#12 2013-11-16 20:03:43

WonderWoofy
Member
From: Los Gatos, CA
Registered: 2012-05-19
Posts: 8,412

Re: [Solved] Asus Transformer Prime Unrecognized in lsusb and ADB

Fantastic!  Glad you got things straightened out.  And thanks for reporting back and giving closure to the thread.  You probably want to mark the thread as [Solved], which can be done by editing the first post.

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