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RE: rtw89: RTL8852BE Frequent Bluetooth disconnections and occasional Wi-Fi dropouts

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Ansh Gupta <anshgupta1941@xxxxxxxxxxx> wrote:
> On 11/07/25 13:45, Ping-Ke Shih wrote:
> > This is very weird. Actually, STA can find AP passively by listening beacons.
> > Is it possible take your phone with hotspot on 5GHz at a clear place?
> 
> I tested my phone with hotspot on 5GHz with another phone for a 3 feet
> distance, and the hotspot shows up on the other phone. I will test this
> further, since I did not have easy access to a clear location earlier.
> 
> > To diagnose BT disconnection problem, please capture log by:
> >
> >     while [ 1 ]; do echo ""; date -R; cat /sys/kernel/debug/ieee80211/phy0/rtw89/btc_info ; sleep 2; done
> | tee xxxxx.log
> >
> > As I add 'date' in log, please manually record the time BT gets disconnect
> > or abnormal.
> >
> > Also, reproduce symptoms at least three times. (more is better)
> >
> >
> > Summarize what we need:
> > 1. btc_info log (mentioned above)
> > 2. kernel and syslog log (with date to align btc_info log)
> > 3. repeat experiments at least three times, and record/share the
> >     disconnection/abnormal time/symptom to us.
> 
> I have attached the logs.zip file for 5 such experiments, following are
> the contents of the readme file, providing timestamps at which abnormal
> behavior was noted:
> 
> instances:
> 
> [B] for bluetooth disconnect and reconnect
> [W] for wifi disconnect and reconnect
> 
> (1) at 15/7/25 time 21:50:26 [B]
> (2) at 15/7/25 time 22:05:30 [W] and 22:06:00 [B]
> (3) at 15/7/25 time 22:13:32 [B] and 22:15:16 [W]
> (4) at 15/7/25 time 22:25:26 [B] and 22:26:09 [W]
> (5) at 15/7/25 time 22:47:41 [B], 22:48:19 [W], 22:49:36 [W] and
> 22:50:47 [W]
> 
> Most of the times, a bluetooth disconnection was followed by a wifi
> disconnection by 10-20 seconds. Disconnection and reconnection for both
> bluetooth and wifi, takes 5-10 seconds. Driver version is same as before.
> 

Thanks for the logs. I have provided them for internal experts for analysis.
Please give them some time. If they need more info, I'll let you know.






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