Hi everyone, I had the same wifi/bluetooth interference problem. My setup is as follows: - Ubuntu 14.04 with custom-built vanilla kernel 4.3.0 - Lenovo B50 laptop having QCA9565 / AR9565 Wireless Network Adapter (ath9k) onboard - Linksys WRT-54GL router running DD-WRT v24-sp2 (10/10/09) mini - Marshall Acton bluetooth speaker
Initially when I was streaming audio to the speaker, wifi degraded dramatically. After doing some research, I have successfully resolved the issue. What I have done is: * On my laptop: - added ``` Enable=Source Disable=Socket AutoConnect=True ``` to /etc/bluetooth/audio.conf - Added ``` options iwlwifi 11n_disable=1 bt_coex_active=1 ``` to /etc/modprobe.d/iwlwifi.conf However, since I'm not using iwlwifi, I'm not sure whether this had had any effect whatsoever. * On my router: - Under Wireless / Advanced Settings, I set "Bluetooth Coexistence Mode" to "Preemption" Then I've rebooted everything just in case. FYI, I encourage you to read through https://wireless.wiki.kernel.org/en/users/documentation/bluetooth- coexistence to find out what bluetooth coexistence is, and I wonder why everybody keeps switching it off (by setting bt_coex_active=0). On the contrary, this technique is designed to defeat interference problem. Also, you may find nice to add "load-module module-switch-on-connect" to /etc/pulse/default.pa so that audio starts streaming to bluetooth speaker automatically when it connects (and then back to laptop speakers when it disconnects.) Cheers, PD. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/219057 Title: Bluetooth does not coexist with WiFi Status in bluez package in Ubuntu: Confirmed Bug description: On my system bluetooth and wifi are unusable together. I have a built- in CSR-based bluetooth module in my laptop, and an Atheros wifi. Wifi transfers slow to a halt whenever there is BT traffic. For example, if I play a music file from another machine through the network using a BT headset, only the first few seconds of the file will play until the player runs out of buffered data. No further data is downloaded. Web pages also do not download, and I even lose connection to AP from time to time. At the same time, it looks like AFH is trying to work. If I monitor the value returned by 'hcitool afh', it changes. But this seems to have little effect on connection quality. Is this a problem with my hardware, or the AFH implementation? Is there a way to force bluetooth to not use the channels in use by WiFi? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/219057/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
