[Nook Color General] fpga_guy:
This is a compilation of threads found on this forum as well as the BN forum. I thought having it in one place will help.

Edit: problem may be BN NC. See last paragraph

The NC is the first device that I have encountered that had intermittent wifi problems. At home, I have a mixture of Macbooks, iPod, a Viewsonic G Tablet running Android 2.2, desktops running Windows 7 and XP using various brands of USB wireless adapters and have NOT had any problems using 802.11n with WPA2/AES encryption.

From other threads: "As always, everything in this guide is completely at your own risk, I am not responsible for you messing up your device further nor am I responsible in the event that your Nook Color explodes and kills your cat, grandma, etc."

Intermittent Wifi Connection:

This is the issue where your Nook connects to Wifi and then after a few minutes the connection goes away. Typically the NC shows wifi as connected or perhaps connected and testing.

There are five variables that can cause intermittent wifi connections:

-your router

-wifi type 802.11b/g/n

-encrytpion

-wifi frequency 2.4ghz/5ghz

-NC ROM

-NC operating system

In many cases, this is due to 802.11n wifi. A digression: Wifi comes in manner flavors; 802.11b, the first standard; 802.11g, the second; 802.11n the latest standard. These flavors have to do with the physical wireless router.

In addition to the hardware, there are variations in encryption of the wifi signal: WEP, WPA, WPA2 with AES or TKIP. WPA2 with AES is the most secure. Look it up on Wiki for more details. And of course the

OS the NC is running.

In many cases, the NC will NOT connect reliably with 802.11n. I have a Dlink DIR-615 V2 wireless router and when set to 802.11n with WPA2 with AES, the NC connects but after a few minutes goes into a state of "testing connection". Setting the router to 802.11g only fixes the problem. An easy test is to go into Youtube and watch a long video. Most likely, half way through, you will loose the connection.

At work, we have a high end multi-access point Meru networking running unencrypted wifi 802.11n and I have this problem. So this may indicate a driver problem with the NC.

The Fix:

Go into your router's wireless. Select manual setup and find 802.11 mode or something to that effect. On my router, I have a choice of "mixed 802.11n, g, b", "802.11n only", "802.11g" only. Selecting 802.11g only with WPA2/AES fixes it for me.

Interestingly the NETGEAR WNR3500L-100NAS 802.11b/g/n seem to operate reliablely with the NC using 802.11n.

One post indicates that settting encryption to TKIP also fixes the problem.

http://xdaforums.com/show...72&postcount=6

However, using TKIP opens up a hole for hackers

http://en.wikipedia.org/wiki/Tempora...grity_Protocol

One solution on the nookboards and BN forum also suggested turning off 802.11n

http://www.nookboards.com/forum/index.php?topic=5669.0

http://bookclubs.barnesandnoble.com...-Problem-quot/m-p/770856/highlight/true#M3295

If you are having problems, the following information will help in diagnosing the problem:

Router brand and model number: eg: Dlink DIR-615

802.11 mode: b, g, n?

SSID visible?

Encryption: no or if yes: WEP, WPA, WPA2 TKIP/AES\

NC Rom: 1.0.1 or 1.1

NC OS:

I will try to update this guide periodically. Moderators: feel free to delete this thread if it is redundant.

Edit:

BN has acknowledged there is a problem with certain routers. From my own experience, there are many more routers that are incompatible with the NC. My assessment is that it's a driver in the BN. I have a Gtablet running 2.2 with no problems.

http://bookclubs.barnesandnoble.com...ssed/m-p/1030918/message-uid/1030918#U1030918

From BN Administrator: "In general, wifi issues can continue to be fixed by following the troubleshooting guides posted in the FAQ and in other posts. We *are* continuing to investigate reported wifi issues with certain routers that have had issues reported. At this point, we’ve investigated the Belkin F5D8231-4 and found an issue introduced with Android 2.2. We have a fix that will be included in the next release, but do not have a workaround for users. We are also investigating other routers (including the DLink DL- 624 and Westell 327W), but do not currently have a fix for them.

Please continue to post here if you encounter further problems and NOOK_Engineer and I will work together to investigate further."

EDIT 9/7/2011: After I updated to BN1.3 and then rooted with, wifi connects perfectly with 802.11n both at home and work. Work wifi consists of multi-point 802.11n. Note that this is with Dalingren's froyo 9/1/11 kernel with the BN 1.3 source drop.