Thank you very much for the reply! 28.12.2013 13:42, Arend van Spriel wrote: > On 12/27/2013 09:58 PM, Michael Tokarev wrote: >> Hello. >> >> Got a Lenovo Thinkpad notebook with the following wifi card: >> >> 03:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01) >> Subsystem: Broadcom Corporation Device [14e4:0608] >> Flags: bus master, fast devsel, latency 0, IRQ 17 >> Memory at f1600000 (64-bit, non-prefetchable) [size=16K] >> Capabilities: [40] Power Management version 3 >> Capabilities: [58] Vendor Specific Information: Len=78 <?> >> Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+ >> Capabilities: [d0] Express Endpoint, MSI 00 >> Capabilities: [100] Advanced Error Reporting >> Capabilities: [13c] Virtual Channel >> Capabilities: [160] Device Serial Number 00-00-24-ff-ff-fe-48-d2 >> Capabilities: [16c] Power Budgeting <?> >> Kernel driver in use: bcma-pci-bridge [wifi tx stalls after short usage, 3.12 kernel] >> P.S. I tried to find archives of brcm80211 list, or a way to >> subscribe to it before posting, but found neither. Are there >> archives? > > Nope. The brcm80211-dev-list is just a (hopefully) convenient way to get > your message to the brcm80211 driver developer within Broadcom. So it is > always best to Cc: the linux-wireless list as well. Ah. So the real archives should be for linux-wireless@ not for brcm..@ :) Got it, thank you! > Now about your card. I am not sure where to start, but can you dump > contents for following debugfs file: > > /sys/kernel/debug/brcmsmac/bcma*/hardware # cat /sys/kernel/debug/brcmsmac/bcma0\:0/hardware board vendor: 14e4 board type: 608 board revision: 1109 board flags: 402201 board flags2: 884 firmware revision: 262032c > Also a capture file would be great so if you have wireshark or dumpcap you can add monitor interface and capture 802.11 packets from connect up until the stalls. Commands for adding/enabling monitor interface (ass root/sudo): > > # iw dev wlan0 interface add mon0 type monitor > # ifconfig mon0 up Capture file made with tcpdump is attached (gzipped). I started the capture with wlan0 disabled, next I used `nmcli con up id "wifi mjt"' to connect to the AP (named, obviously, "mjt"), and next I tried to d/load a file from my website (86.62.121.231). It d/loaded about 27Kb and stalled. Next I tried to ping the AP (192.168.88.65), which also didn't work. That's quite a typical behavour of this whole thing. Sometimes it lasts a bit longer, but that's rather unusual and it ends up stalling anyway. Is it worth the effort to try 3.13-tobe kernel here? I browsed changes in there made in drivers/net/wireless/brcm80211/ compared with 3.12, but there aren't many changes related to the softmac version, and most looks rather cosmetic. Thank you very much for the help! /mjt
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