BT stops working if Wifi connected on RTL8723BE

[freechelmi]

On RTL8723BE (13d3:3410 ) Mini PCIe (Brix N2807) BT works great with the new branch, but stops connecting to devices if wifi is connected to a hotspot. btcoexist is loaded.

Will give details later on.

[chzw517]

i have the same issue... anyone can help?

[lwfinger]

What driver are you using for the RTL8723BE? There are some fixes for BT coexistence that are in the process of being submitted for kernel 3.20. You can use those by building driver rtl8723be from the 'troy' branch of the repo at http://github.com/lwfinger/rtlwifi_new.git.

[sunny0]

Just tried troy's branch with 3.18.3 and kernel panic.

[lwfinger]

Pl.ease post a photo of the panic. Otherwise I cannot help.

[sunny0]

How's this?

[chzw517]

It causes a kernel panic!....I using ubuntu15.04 alpha1 with kernel 3.18.0...and...then...nothing left...:'(

[lwfinger]

The panic should be fixed now.

[chzw517]

Can you tell us what was the problem ?and How can you fix that?

[lwfinger]

It was a coding mistake. If you want the details, then do 'git show caa1026'.

[sunny0]

Ok, no more panic, but still no devices shown in bluetoothctl. rfkill shows no blocks too...

[chzw517]

Hi..sunny0...pls keep us informed if you solved the problem...thank you very much...

[krlk89]

Same problem with last two Ubuntu 14.10 kernels (3.16.0-29 and 3.16.0-30). I had to do modprobe -r rtl8723be in order to get bluetooth to work but then wifi is gone...

EDIT: Everything's working again with kernel 3.19 RC 7.

[lwfinger]

FYI, there is a new 'kernel' branch that has code that will be in kernel 3.21. It handles the Realtek devices just like any other kernel device. Thus far, no changes for older kernels have been included. As problems are reported, I will fix them.

[sunny0]

Not sure where to reply anymore... haha

Anyway, I tried out the latest wifi and bluetooth drivers against 3.18.3 on opensuse from the newly made kernel branches. Still no devices listed in bluetoothctl, no blocks, nothing in dmesg. Wifi works fine, bluetooth is invisible...

[lwfinger]

Please check the output of the dmesg command. Anything show up there? In particular, did you 'sudo make install' so that the firmware is availablle.

[sunny0]

Yes, i did 'sudo make install' after 'make'. Checked dmesg and nothing new is shown.

[sunny0]

Reverted back to the 3.18.3 firmware and modules, did 'sudo make install' for just the bluetooth kernel branch, then 'sudo modprobe -rv btusb', and 'sudo modprobe -v btusb', and this is dmesg:

usbcore: deregistering interface driver btusb Bluetooth: hci0 urb ffff880436678700 failed to resubmit (2) usbcore: registered new interface driver btusb Bluetooth: hci0: hci_ver=06 hci_rev=1e3e lmp_ver=06 lmp_subver=4ce1 Bluetooth: rtl8723b: assuming no firmware upload needed.

But, with the latest from kernel_latest i get no errors from 'dmesg | grep bt' except

btcoexist(O) btusb(O)

'dmesg | grep rtl'

Bluetooth: rtl8723b: assuming no firmware upload needed. Using firmware rtlwifi/rtl8723befw.bin ieee80211 phy0: Selected rate control algorithm 'rtl_rc' rtlwifi: wireless switch is on rtl8723be 0000:02:00.0 wlp2s0: renamed from wlan0 rtl_pci(O) rtlwifi(O)

setup_arp_tx.isra.23+0x5e/0x70 [rtlwifi] [] rtl_is_special_data+0x16a/0x390 [rtlwifi] [] rtl_tx_status+0x5c/0x150 [rtlwifi]

[lwfinger]

Your posting is confusing. First it did not load BT firmware, then it did.

It appears that your device needs code changes. I add some code to handle that subversion. Do a 'git pull' on the kernel branch and try again to 'make', 'sudo make install', 'sudo modprobe -rv btusb', and 'sudo modprove -v install'.

[sunny0]

That fixed it!

Btw, this is now working on a Lenovo Z40, for anyone else that owns this brand.

[lwfinger]

Please post the full output of the dmesg command.

[chzw517]

Hi lwfinger... what branch should I pull? Is it master?

[lwfinger]

I suggest the kernel branch.

[freechelmi]

Hi Larry , sirry I was not really responding on this point for few weeks.

We want to work on Ubuntu 3.16 Kernel , What branch for Wifi & BT do you recommand for rtl8723be ?

I 'm a bit lost here because it seems that the 'kernel' branch might not work on older kernel ?

I will try the kernel branch anyway.

[lwfinger]

The best BT code is in the kernel branch. It will work for any kernel 3.14 or newer.

The best wifi code is in http://github.com/lwfinger/rtlwifi_new.git using the master or troy branch.

[freechelmi]

Thanks larry. your work is really valuable.

Will try to produce dkms deb as before. as I get this now should work with Wifi+BT at the same time which is great.

[freechelmi]

Hi , I tried the kernel branch on lastest Ubuntu 14.04.2 (kernel 3.16.X) , and even if the firmware seems correctly loaded the result is the same as the mainline btusb : no discovering anything. anybody experienced this ?

[Akhenaton]

Hi, Yes, same here ! :-)

[lwfinger]

The only sure way to get this to work is to use the kernel branch of this repo. The first kernel with this version of the driver will be 4.1-rc1, which will be out in about one month.

[freechelmi]

Yes we all use the kernel branch as I said.

[lwfinger]

Sorry, I misread your comment.

@freechelmi: I see you have RTL8723BE hardware. Your device is in the USB tables, and it should be recognized.

Do you have the latest version, which includes commit 47629cd82ce0? That fixed a typo that prevented the firmware from being installed correctly.

If you have that commit, please post the section of the output of dmesg where the device is first recognized.

[soyzenitram]

Same issue (bt stops when wifi is on): Kernel version 4.4.0-45 Wifi driver: rtlwifi_new, rock.new_btcoex branch, BT driver: this one, kernel branch

Any help please???

Read something about making a git pull, I don't know if it is suitable for my situation, not very familiarized with git commands and their effects... sorry.