Xperia X: complete connectivity freeze with accesspoint steering

asked 2020-04-24 10:48:07 +0200

ziellos gravatar image

updated 2020-05-04 15:12:43 +0200

This question is intended as an update to the original issue described here which is somewhat outdated and contains also some conflicting information.

From what I learned, only Xperia X devices are affected, regardless of the Sailfish OS version. At least I was not able to reproduce the issue with my Intex Aquafish.

Fact is that my Xperia X (currently SFOS 3.3.0.16) shows the behaviour described below in my Wifi environment when the feature band steering/accesspoint steering (extension to the IEEE 802.11 Wifi standard) is activated in the Mesh settings of my Fritzbox 7590. The crucial feature seems to be accesspoint steering because the freeze also occurs when only the 2.4 GHz band is active.

When I force acesspoint steering by crossing accesspoint ranges (AVM repeaters), my Xperia X loses connectivity completely, reproducible. When that happens, neither Wifi nor mobile network can be used anymore. Even worse, both cannot be controlled anymore because connmanctl seems to hangs forever. That's why it is not even possible to restart or shutdown the phone. Soft reset is the only way to get out of this situation.

It seems the likeliness of the issue is related to the number of access points (four in my case). In my environment no other device is affected from this issue, be it iOS, Android, Windows, or Linux. The situation has not improved with the latest SFOS versions, the behaviour is the same since 3.0 at least.

Some more details on my setup:

  • Fritz!Box 7590 firmware 7.12
  • 2 x Fritz!WLAN Repeater 450E firmware 7.12
  • Fritz!WLAN Repeater 1200 firmware 7.14
  • all connected to each other via ethernet, aka LAN bridge
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Comments

1

Same here with my X Compact in a similar setup Fritzbox + Repeater. Doesn't happen too often though.

TrulloF ( 2020-04-24 15:17:47 +0200 )edit

Same behavior with Xperia X in my home wifi (Fritzbox 7490 + Repeater 1750E) with with enabled AP steering feature.

For me, the freezes occours also in some public wifi's (business, hotels, bars e.g.)

jumPM ( 2020-04-24 20:09:06 +0200 )edit

Same here at home with three Ubiquiti NanoHD, disabled all 802.11 extensions (k, v) a few weeks ago and since then I had no freeze/reboot.

This is not an acceptable fix, as other equipments in my home can't benefit from these usefull features, and obviously this can't be done on a public Wi-Fi.

N-Mi ( 2020-06-23 11:30:06 +0200 )edit

Installed three brand new TP-link EAP225 AP's with wifi controller in my home yesterday, and since then had multiple compkete network freezes on my X. Even airplane mode does not turn on, and the device will hardly shutdown. Jolla, please fix this. I can provide logging if necessary.

yomark ( 2020-08-16 19:35:08 +0200 )edit