[Sailfish X] Missing kernel notification if AP WLAN turned off
asked 2017-11-08 14:14:54 +0300
I just noticed an always repeatable WLAN bug on Xperia X SFOS 2.1.3.x.
1. Initial status
- device is connected to access point (Fritzbox 7590)
- WLAN and mobile data activated
2. Steps done to repeat failure
- device went into suspend mode and stays at the same place
- access point WLAN is turned off suddenly (e.g. plug pulled, disabled by access point switch, scheduled ...)
3. Expected behaviour
- Conman should be notified by kernel that AP signal has been lost and thus initiate mobile connection
4. Actual behaviour and observations
- if woken up from suspended mode (even hours later) the os shows that WLAN is still connected. Console "iw dev wlan0 link" also shows a linked access point
- due to stalled ip connection and repeated retries battery level will fall more that 30 - 40% overnight (only IMAP push and XMPP running, no alien dalvic threads running)
- if the device will be moved on my way to work the missing WLAN connection will be notified possibly because of radio interrupts
- if device is unsuspended (active) for a few minutes kernel will be notified by driver and conman switches to mobile data
In case development needs some logfiles from e.g. broadcom kernel driver please let me know how to enable logging (some sysfs parameter for loglevel needs to be changed, but I am unsure where to find them /sys/?).
Nekron ( 2017-11-09 14:01:19 +0300 )editThanks for the report.
jovirkku ( 2017-11-09 14:16:48 +0300 )edit