Hi all again, seems i hit another bug, my test setup is a three mesh nodes, all in one room, two is alix pc engines with EMP9605H (ar9220) with antennas like on soho routers and one is my laptop with dbii f52n-pro ar9220 based too. Use compat-wireless-3.5-rc5-1-snpc on all nodes.
All three nodes work fine, but then i remove antenas from one of the node (it contiue work only with pigtails) signal levels with this node is low but enough to work, it continue to work but i have errors in dmesg on all three nodes: ath: phy0: Failed to stop TX DMA, queues=0x001! Links is become unstable, packet loss regardless to which node taffic is goes, to node without antennas or betwen nodes with antennas. I tryin change wireless cards with no results, but all what i try is ar9220 based, just different manufactures. Also i try add ubiquiti nanostation M2 with openwrt on it in this setup, and get same results on it too - dma erros and unstable links with packetloss. Then i connect antennas back, all strat working fine again withous erorors. I think it seems low signal and/or low quality links is triggering with bug. i also trying use stock kernel 3.2.x and 3.4.x, compat-wireless bleeding edge, but no luck - same results. Please give any suggestions how i can help find a root case of this bug to resolve it? Also update:I also try to test it with AP<->client mode, just start hostapd on one node, remove antennas and start iperf, in this case there is no errors and link seems very more stable then i use mesh nodes, may be this is also 802.11s related too.
C уважением With Best Regards Георгиевский Юрий. Georgiewskiy Yuriy +7 4872 711666 +7 4872 711666 факс +7 4872 711143 fax +7 4872 711143 Компания ООО "Ай Ти Сервис" IT Service Ltd http://nkoort.ru http://nkoort.ru JID: [email protected] JID: [email protected] YG129-RIPE YG129-RIPE
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