Qualcomm Atheros Ethernet Adapter Issue on Lenovo G510

[steffeth]

Hi guys,

I have a very strange problem that's keeping me awake day and night. I've tried every possible thing and could't fix it. I have a Lenovo G510 laptop with two network adapters Qualcomm Atheros and Broadcom 802.11n. It looks like something is wrong with Qualcomm and my internet connection goes off after 6, 7 hours of uptime. Sometimes more, sometimes less - but after it goes down, I get an error saying that my Ethernet controller isn't connected to the laptop: image

Once this happens, I can't connect to LAN or Wifi. The other adapter looks well but for some reason that I can't understand, its functionality depends on the Atheros Qualcomm one. I'm no expert in networking so I don't know what's happening. Is it possible that I have incompatible drivers? (I've downloaded the drivers for Ethernet LAN and Wireless from Lenovo's official page).

My Questions are:

Is the controller dead? What are my options because I need stable connection, and if I cannot fix it, I might aswell sell the laptop...

Other thing, when I go and uninstall the Qualcomm device from Device Manager, Windows doesn't automatically detect it after the first reboot. When I try to install the drivers from Lenovo official page manually, here's what it says: image

I've tested this issue on Windows 10 as well as Windows 8.1, still haven't found permanent solution.

Any help is appreciated, thank you!

PS. After I shut down the laptop and leave it shut for 20-30mins, or restart it few times, the driver gets detected and I can connect through LAN or WiFI again.

 

[hang-the-9]

This almost sounds like a heat and connection issue where your motherboard and network card connections expand / contract during use and heating / cooling and at some point the connection breaks.

Try reseating the wireless card in the system. Since it happens under different operating systems it's not a software issue.

Check for a newer BIOS and chipset driver in addition to the drivers for the network cards. If that does not help you may need to try an external USB Ethernet device and disable the onboard Ethernet port if that causes your wireless to stop working.

 

[ssali27]

First try running Ubuntu from a usb stick.. It wil work with your wificard if its working (this wil rule out any driver issues)

If it works in ubuntu, then you can start by looking at statino drivers page.. They have newer Atheros drivers for your card.

Here is the link for newer drivers, than lenovo provides..
http://www.station-drivers.com/index.php?option=com_remository&Itemid=353&func=fileinfo&id=1575&lang=en