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Go to SolutionVenue 8 Pro Wifi Failure Log
Hi, I have a Venue 8 Pro 5830 64GB and experience the following drop issue with wifi:
- tends to drop in the middle of extended downloads/streaming/youtube
- when it drops, it shows as unavailable and doesn't see my router or any of the others in the area
- attempting to reset it by turning the wifi slider off fails and it just reverts back to on
- each time this happens, the failure event details are logged at C:\AR6K_FW_Recovery.log
- 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":
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!
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: 255Thanks 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.
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.
Hmm, that may be a separate issue with your router, gmanca. If all devices can't see the router, it probably means the failure occurred on the router instead of the Venue. The issue of the thread causes only the Venue to become unable to see ANY nearby routers, as the firmware/driver terminates. I haven't noticed a general failure across all connected devices to the router when this happens and the router hasn't needed a restart to restore connectivity, only the Venue driver. You may be able to fix your wifi issue by updating the firmware on your router.
The next time it happens, and all of your devices lose connectivity, please be sure to open the log file with Wordpad and see if a new event has been appended to the file with that same date/time on the 'Recovery Start' line. There is a chance that the firmware/driver failure causes some improper network activity that corrupts your router, so it might be good to confirm.
A little question for everyone getting these errors: on your router's wireless settings page, if you have an option for "Channel width", is it set to 20hz, 40hz, or Auto? I was just thinking about the possibility that the router on Auto for this, or various other settings like "Channel" (1-11 kind of option) might contribute to this issue. For example, if the router on Auto operates on 20hz as the Venue connects to it, but later switches to 40hz, maybe the Venue's wifi driver/firmware is unable to handle this switch and collapses.
On my particular setup, the router is set to Channel: 11, Channel Width: Auto. On my router, these 2 seem to be the only options that may dynamically change during operation. If the error occurs again, I'm going to switch Channel Width to the fixed 20hz setting and see if that helps.
I have a little question for everyone getting this error log:
On your router's wireless settings page, if you have an option for "Channel Width", is it set to 20hz, 40hz, or Auto? I was just thinking about the possibility that Auto for this, or another dynamic setting like "Channel" (Auto, 1-11 kind of option) might contribute to this issue. For example, if the router on Auto operates on 20hz as the Venue connects to it, but a few hours later switches to 40hz during a download, maybe the Venue's wifi driver/firmware is unable to handle this switch and collapses.
At the moment, my router is set to Channel: 11, Channel Width: Auto, on 802.11n-only mode. On my router, these 2 seem to be the only options that may dynamically change during operation. If the error occurs again, I'm going to switch Channel Width to the fixed 20hz setting and see if that helps.
I've been running on fixed Channel: 11, Width: 20hz on 11n-only mode for the past 24 hours without a drop so far. I'll see if it's more or less stable over the next few days. Your Actiontec MI424WR seems to be a wireless n router with speeds up to 300Mbps (N300), which I believe requires 40hz, either dynamically/auto or fixed. I've read that 20hz is limited to around ~150Mbps (N150). If the option isn't visible, maybe you can contact them to find out if it's internally locked at 40hz or if it's essentially Auto-20/40?
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
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.