Acer Aspire V3-571G Unreliable Wireless

[GCoffee]

Hello All,

I've just installed the x64 Desktop edition of 12.04 on my Acer Aspire V3 571G. The wireless does connect, though it can take a while. The problem is the wireless only stays connected for 45 minutes max. before it drops out, and then it continually 'reconnects' (never actually connecting to the network) until I either switch between a few networks or turn wireless off and on again.

I'm using the ath9k driver that Ubuntu provides, and (although it shouldn't make a difference) GNOME3.

Is there a more stable wireless driver available that I could use?

Regards,
Ben.

[alxkarpun]

Same here, with Acer v5-471.
I found (lspci | grep -i net):
Atheros Communications Inc. AR9462 Wireless Network Adapter (rev01)
and (cat /var/log/kern.log | tail -100) says that:
wlan0: deauthenticated from xxxxxxx (Reason: 2)

and ubuntu request to enter wireless password from time to time.

Will be appreciated for any help

[teaker1s]

AR9462 aspire v3-551 same issue, the odd thing is that it runs fine first install and then after a while it drops association.
logs show that wireless associates and then times out.

bug reports show we are far from alone.
The strange bit is it works fine then dies

[gijake]

Same problem would really like a fix for this it seems to be getting worse not better

[gratzimilian]

Is this issue still present in 12.10?

[froanas]

I've had the same problem for months now, and I just found this fix:

sudo rmmod ath9k
sudo modprobe ath9k nohwcrypt=1

It seems to work so far, fingers crossed.

EDIT:
To make this permanent:
1. create a file name ath9k.conf under /etc/modprobe.d (touch /etc/modprobe.d/ath9k.conf - for example )
2. nano /etc/modprobe.d/ath9k.conf and introduce one line containing the following:

options ath9k nohwcrypt=1

3.Save the file
4.Reboot, OR do

rmmod ath9k
modprobe -b ath9k

[gratzimilian]

Any other issues experienced with the V3-571G laptops? All other hardware works as expected?? Thinking about getting one..

Thanks in advance!

[andreadi]

Just set up one V3-571G

Works perfect.

First thing you have to do before anything.
*Do not download Nvidia drivers yourself.

1. Install bumblebee https://wiki.ubuntu.com/Bumblebee it will download what is needed.

2. To get wireless working update all packages and then
sudo apt-get update && sudo apt-get upgrade
again and it got things fixed for me
http://www.upubuntu.com/2012/10/how-...-problems.html

3. To get brighness controls
http://askubuntu.com/questions/12846...-an-acer-4741g

[gratzimilian]

Just set up one V3-571G

Works perfect.

First thing you have to do before anything.
*Do not download Nvidia drivers yourself.

1. Install bumblebee https://wiki.ubuntu.com/Bumblebee it will download what is needed.

I was a bit confused by this as I thought they were either Intel *OR* NVidia and there wasn't an Optimus option, went to investigate the Acer website and found this. All with the same model number but with differing submodel numbers.

NX.RYFEK.016 - being Intel 3000 card
NX.RZJEK.010 - being a 1GB NVidia GT630M
NX.RZLEK.004 - being a 2GB Nivida GT630M

Is there an Optimus version as well somewhere? Are there issues with the latest nvidia drivers included with the official ubuntu repos?

Finally, what is real world battery experience like? Specifications are quite often over stated so it would be useful to know what battery is like in common scenarios if you're able to advise? I'm currently torn between the NX.RZLEK.004 and a Lenovo Z580, differences being better quoted battery life on the Lenovo but better NVidia card (2GB) on the Acer and the fact that it has Bluetooth built in (and version 4!).

Thanks

[gratzimilian]

2. To get wireless working update all packages and then
sudo apt-get update && sudo apt-get upgrade
again and it got things fixed for me
http://www.upubuntu.com/2012/10/how-...-problems.html

Also, does this mean the card is a broadcom wireless card? Earlier posts suggest it's an Atheros (ath9)..Another potential difference in models?