Bluetooth stutter Realtek 8852AE (Lenovo ThinkPad E15 Gen3) - Ubuntu 20.04


Answer: 1

28 hours ago

I have serious stuttering audio from bluetooth output from my machine. I need help to understand if I am doing this correctly.

So from Lenovo support latest driver Realtek 8852AE for Windows (September update: 1.8.1039.3000) seemed to have fixed this problem. (at least for now)

On Ubuntu I found out that lwfinger has provided a fix for the card (rtw89pci): hence, I did the installation and found no issue except minor warning.

However, the issue still persists so I ran:

sudo modprobe rtw89pci

sudo dmesg | grep rtw

[    2.969069] rtw_8822ce 0000:03:00.0: enabling device (0000 -> 0003)
[    2.969769] rtw_8822ce 0000:03:00.0: Firmware version 7.3.0, H2C version 14
[    2.969804] rtw_8822ce 0000:03:00.0: Firmware version 7.3.0, H2C version 14
[    3.064913] rtw_8822ce 0000:03:00.0 wlp3s0: renamed from wlan0
[    6.722947] rtw_8822ce 0000:03:00.0: start vif b4:b5:b6:c9:a3:2b on port 0
[   11.329985] rtw_8822ce 0000:03:00.0: failed to do dpk calibration
[   11.468469] rtw_8822ce 0000:03:00.0: sta c8:ea:f8:27:cf:64 joined with macid 

Noted that the log is showing rtw_8822ce instead of rtw89pci.

sudo nano /etc/modprobe.d/blacklist.conf

# old driver from rw88 git
blacklist rtw_8822ce

I also have blacklisted this driver from running again as I found out that this driver could be from rtw88 (which I don't remember installing it).

I am quite confused now is my wifi card is 8822CE or 8852AC? I am trying to uninstall the driver by cloning back rtw88 and run make uninstall but it doesn't work.

running lsmod | grep rtw

rtw89pci               45056  0
rtw89core             897024  1 rtw89pci
rtw88_8822ce           16384  0
rtw88_8822c           327680  1 rtw88_8822ce
rtw88_pci              24576  1 rtw88_8822ce
rtw88_core            188416  2 rtw88_pci,rtw88_8822c
mac80211             1024000  4 rtw88_pci,rtw89pci,rtw88_core,rtw89core
cfg80211              888832  3 rtw88_core,rtw89core,mac80211

Any direction to take this the next would be much appreciated.

Added by: Lindsay Marks

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