nobody31

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nobody31

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77 Posts

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1368596

October 18th, 2014 04:00

Venue 8 Pro Wifi Failure Log

Hi, I have a Venue 8 Pro 5830 64GB and experience the following drop issue with wifi:

  1. tends to drop in the middle of extended downloads/streaming/youtube
  2. when it drops, it shows as unavailable and doesn't see my router or any of the others in the area
  3. attempting to reset it by turning the wifi slider off fails and it just reverts back to on
  4. each time this happens, the failure event details are logged at C:\AR6K_FW_Recovery.log
  5. driver restart is required to reconnect, either by reboot or toggling advanced driver properties like the roaming aggressiveness setting 1 or 2 times (disable/enable in Device Manager usually fails to restart it, leaving it with the "yellow ! bang icon")

Reference to others who probably have the same issue (20g and jadesse):

This issue is unrelated to the Windows Update failure and unrelated to those who simply have temporary drops, limited connectivity, or sleep/wake drops. It seems to be caused by the adapter firmware/driver terminating due to a TX (transfer) hang. Could anyone who is experiencing these issues confirm they're also getting that C:\AR6K_FW_Recovery.log and paste the contents of their file?
 
Opening the log in Wordpad, it describes the failure as "Control Endpoint TX Hang":
Firmware Recovery #001
Firmware Version: 0x31C87571
Recovery Start: 2014-10-17 04:17:40.339
Recovery Reason: Control Endpoint TX Hang
Information:
Control Endpoint (1): Credit = 0, Queue Depth = 0
Last Credit Consummed: 2014-10-17 04:17:35.324
Last Credit Returned: 2014-10-17 04:16:50.974
Recovery Finish: 2014-10-17 04:17:46.226
Recovery Status: ERROR (0xFFFFFFFF)
Venue 8 Pro 5830 64GB
  • BIOS: A09 (latest)
  • Atom driver: 603.9600.2067.27988_A05 (latest)
  • Wifi driver: 3.7.2.59655 (latest)
  • Wifi security: 802.11n (2.4ghz only) WPA2 Personal AES
  • Bluetooth: off
  • MicroSD card inserted, in case that affects power draw and/or the wifi adapter
Please list your specs in a similar way, so maybe we can find a common point of failure.
I hope Dell/MS can fix this issue soon. Thank you for reading!
  • jjwatmyself

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    Posted April 4th, 2016 18:00

    For Dell Venue 8 Pro 5830 running Windows 10 Home/Pro 1511 10586.164 Intel Atom Z3740D. This solution was originally proposed in March 2016 by jjwatmyself with nobody31’s help. Testing completed by jjwatmyself and nobody31. No known issues to-date (April 4 2016).

     

    Solution is for Windows 10 and not tested on Windows 8 or 8.1. Assumption is that the device already has the latest 1538 WiFi+Bluetooth drivers, published by Dell, installed 3.7.2.59:

    • Download Windows 10 32 bit Bluetooth and Wi-Fi drivers for LG's 10T550 Tab Book Duo (same hardware as DV8P)

    http://www.notebook-driver.com/lg-10t550-tab-book-driver-software/

     

    Version with Atheros IHV Service / Libraries (tested by jjwatmyself)

    • Copy the following files to a temporary location (needed after driver install)

      • C:\windows\system32\athihvs.dll

      • C:\windows\system32\athihvui.dll

    • For each installer, right-click, run as Administrator

    • Copy the files back

      • C:\windows\system32\athihvs.dll

      • C:\windows\system32\athihvui.dll

    • Reboot

     

    Version without Atheros IHV Service / Libraries (tested by nobody31)

    • For each installer, right-click, run as Administrator

    • Click start, type regedit, right click run as administrator

    • Navigate to HKLM\System\CurrentControlSet, search for athihvs.dll

    • Export Key (yellow folder) IHVExtensions in case you need to restore
    • Delete Key (yellow folder) IHVExtensions

    • Reboot

     

    Wireless and Bluetooth will show as follows: 

    • Dell Wireless 1538 802.11 a/g/n adapter 3.7.2.61686 9/22/2014

    • Qualcomm Atheros Bluetooth UART Transport Driver 2.2.0.22 1/22/2015

     

    Both solutions offer stable Bluetooth and Wireless, long battery life using connected standby. As of this writing, there are no measurable advantages or disadvantages of either proposed config over the other.

    Final tip on this is that that there is massive interference with Bluetooth when on 2.4GHZ Wi-Fi (especially when Bluetooth devices are connected).  Download speeds are horrific. Upload speeds do no appear to be impacted.  Solve this by using 5GHz Wi-Fi and the download speeds are near wired performance when close to the access point.  Alternatively, if it is convenient, turn Bluetooth off.

     

  • nobody31

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    Posted October 18th, 2014 05:00

    Couldn't add these details to the first post:

    Event Viewer log: Microsoft-Windows-WLAN-AutoConfig/Operational

    After the firmware/driver logs the failure:

    WLAN AutoConfig service has successfully disconnected from a wireless network.
    Network Adapter: Dell Wireless 1538 802.11 a/g/n Adapter
    Interface GUID: X
    Connection Mode: Automatic connection with a profile
    Profile Name: X
    SSID: X
    BSS Type: Infrastructure
    Reason: The network is disconnected by the driver.

    When it attempts to auto-reconnect after dropping:

    WLAN AutoConfig service failed to connect to a wireless network.
    Network Adapter: Dell Wireless 1538 802.11 a/g/n Adapter
    Interface GUID: X
    Connection Mode: Automatic connection with a profile
    Profile Name: X
    SSID: X
    BSS Type: Infrastructure
    Failure Reason:An internal failure prevented the operation from completing.
    RSSI: 255

  • chrisyng

    2 Posts

    4849

    1

    Posted October 18th, 2014 20:00

     I can confirm the exact same issue with wireless as you.

    my WiFi goes unavailable usually after streaming video like Netflix or YouTube.  am forced to reboot in order to get WiFi back. I checked and also have the errorlog in c:\ with the same content as you posted.

    I am not confident that there is a fix for this issue as these forums are full of WiFi issues with no resolve. many people have sent their devices back in for repair only to have their repaired devices still doing the same thing.  feel that dell is just ignoring the issue on the first generation venue 8 pros and hoping the issue is fixed with the newer models.. in other words, I think dell is going to stick it to us..

  • nobody31

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    77 Posts

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    Posted October 19th, 2014 08:00

    Thanks for the confirmation! I hope something can be done about this, as it's a clearly defined issue. If they can find which driver/firmware code logs that message, maybe they can trace it back to the fault. If possible, could you list the details of your v8p like the bottom of the first post (32GB or 64GB, wifi driver version, wifi security, bios version, bluetooth state, microsd present or not, etc.)? It might help to give them more information to work with. If they can recreate the issue, then the odds of a fix should hopefully increase.

  • drahnier

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    52 Posts

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    Posted October 19th, 2014 17:00

    i can confirm this for all of my three venue 8 tablets.

    I may add that during the past several months I experimented with several different routers and that leaves me convinced that the router the venue 8 connects to does play a significant role in this behavior.

  • Userp

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    Posted October 20th, 2014 15:00

    I can confirm, I have this exact problem. Right now it is my only consideration for getting rid my DV8 Pro, as I have found no work around. I can not work extended periods of time on this device, which I purchased for.

    I believe the problem is even worse than described, as I use Bluetooth exclusively for keyboard / mouse input. Since I have Bluetooth running all the time, when problem occurs as described in the OP, Bluetooth is also knocked offline, same issue.....can not turn Bluetooth off and then back on to recover, must restart or perform an enable/disable of the WLAN network adapter to recover both the WLAN and Bluetooth.

    --------------------------------------------------------------------------------

    Firmware Recovery #001
    Firmware Version: 0x31C87571
    Recovery Start: 2014-10-19 19:01:16.134
    Recovery Reason: Control Endpoint TX Hang
    Information:
    Control Endpoint (1): Credit = 0, Queue Depth = 0
    Last Credit Consummed: 2014-10-19 19:01:11.132
    Last Credit Consummed: 2014-10-19 19:01:11.132
    Recovery Finish: 2014-10-19 19:01:21.914
    Recovery Status: ERROR (0xFFFFFFFF)

    --------------------------------------------------------------------------------

    Venue 8 Pro 5830 64GB
    Bios A09 (latest)
    Atom Driver: 603.9600.2067.26305_A03 (Old Version, wanted to test, not working either)
    Wifi driver: 3.7.2.59655 (latest)
    Wifi security: 802.11n (2.4ghz only) WPA2 Personal AES
    Bluetooth (Always On)
    MicroSD no card inserted

    I would also like to add 90% of the time I am using IE and Chrome for research, RDP'ing to the workplace, or casual web browsing and not streaming music or video and this problem occurs.  

    So annoying to have an internet connected wireless tablet not be able to keep an internet/bluetooth connection. This is a big fail for this device. I hope other people read these posts before running out to buy a DV8 Pro for doing serious work over wireless for extended periods, they will be disappointed.

  • nobody31

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    Posted October 21st, 2014 14:00

    Thank you for those details! Your microsd and bluetooth states are the opposite of mine, so that probably eliminates those states as the cause. It's probably either the BIOS or wifi driver/security.

  • gmanca

    3 Posts

    4849

    1

    Posted October 22nd, 2014 22:00

    same error here, and same configuration, I think I will switch back to android tablets...

  • nobody31

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    77 Posts

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    Posted October 22nd, 2014 22:00

    Thanks, gmanca. Incidentally, the purpose of this thread is not only to see how many users have this specific wifi issue, but to get detailed information, specs, and logs (like Userp's post) for Dell to use in order to make their job easier when creating a fix. If anyone from Dell sees this thread, please let us know if you require additional details.

  • chrisyng

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    Posted October 22nd, 2014 23:00

    I made a couple changes to my router a couple of nights ago. first of all I registered  the venue's mac address into the  dhcp table to assign it a static ip.. and the other change was to switch the router mode from dual band to just wireless G and B .. I have had no wireless issues for the last 2 days and been testing it with lots of streaming which usually would result in my wireless going down within 30mins of streaming a movie..