Opened 18 months ago

Last modified 17 months ago

#23032 new defect

Random wifi freezes on WR841N

Reported by: nik Owned by: developers
Priority: normal Milestone:
Component: base system Version: Chaos Calmer 15.05
Keywords: wifi, freeze Cc:


I am using chaos calmer (15.05.01 r48532) on my WR841N v9 h/w. I notice that every few days Wifi will freeze. SSID is still visible but device cannot register after waking up from sleep. And devices which are registered cannot assess internet. Is it just me or there are other people out there experiencing this?

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Change History (4)

comment:1 Changed 18 months ago by anonymous

I have a similar problem. It seems to happen more when there are a lot of active neighbor wifi routers.

comment:2 Changed 18 months ago by Aneqrs

I've also experienced these symptoms on my WR841N v9 with chaos calmer (15.05.01 r48532). The device was still reachable by wired ethernet, so I resolved the issue by doing

/etc/init.d/network restart

comment:3 Changed 18 months ago by ufo@…

please have a look at "dmesg".. is there a message with "ieee80211_get_vht_mask_from_cap"?
please try a wifi scan to reactivate wifi: iw dev wlan0 scan (instead of reboot or network-restart)

freifunk leipzig ticket about this (or similiar) problem:

comment:4 Changed 17 months ago by ufo@…

sometimes with that workaround..
..even a wifi scan works. but calling that errormessage in logread (last line)

[857474.835791] [<83291ccc>] ieee80211_get_vht_mask_from_cap+0x1a74/0x1b64 [mac80211]
[857474.845168] ---[ end trace 40cea651365adcd0 ]---
[1687366.421011] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02100020 DMADBG_7=0x00006800

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