#22075: Intermittent 802.11 transmission failures in a wireless/WDS bridge,
ath9k
--------------------------+---------------------------------------------
Reporter: jmomo | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone: Designated Driver (Trunk)
Component: base system | Version: Trunk
Resolution: | Keywords: wds, bridging, 4-address, ath9k
--------------------------+---------------------------------------------
Comment (by jmomo):
I downgraded to CC/15.05.1 today changed 5Ghz channels from 36 to 44, but
the problem persists.
I wrote a script to watch output and it puts out things like this:
{{{
20160324173005: tx failed: 0 (+0) Fatal HW Error: 4
20160324173006: tx failed: 6 (+6) Fatal HW Error: 4
20160324173007: tx failed: 42 (+36) Fatal HW Error: 4
20160324173008: tx failed: 69 (+27) Fatal HW Error: 4
20160324173009: tx failed: 94 (+25) Fatal HW Error: 4
20160324173011: tx failed: 119 (+25) Fatal HW Error: 4
20160324173012: tx failed: 152 (+33) Fatal HW Error: 4
20160324173013: tx failed: 191 (+39) Fatal HW Error: 4
20160324173014: tx failed: 227 (+36) Fatal HW Error: 4
20160324173015: tx failed: 265 (+38) Fatal HW Error: 4
20160324173016: tx failed: 305 (+40) Fatal HW Error: 4
20160324173017: tx failed: 346 (+41) Fatal HW Error: 4
20160324173018: tx failed: 384 (+38) Fatal HW Error: 4
20160324173019: tx failed: 421 (+37) Fatal HW Error: 4
20160324173020: tx failed: 459 (+38) Fatal HW Error: 4
20160324173021: tx failed: 480 (+21) Fatal HW Error: 4
20160324173022: tx failed: 498 (+18) Fatal HW Error: 4
20160324173023: tx failed: 525 (+27) Fatal HW Error: 4
20160324173024: tx failed: 556 (+31) Fatal HW Error: 4
20160324173025: tx failed: 594 (+38) Fatal HW Error: 4
20160324173027: tx failed: 631 (+37) Fatal HW Error: 4
20160324173028: tx failed: 657 (+26) Fatal HW Error: 4
20160324173029: tx failed: 688 (+31) Fatal HW Error: 4
20160324173030: tx failed: 716 (+28) Fatal HW Error: 4
20160324173031: tx failed: 756 (+40) Fatal HW Error: 4
20160324173032: tx failed: 797 (+41) Fatal HW Error: 4
20160324173033: tx failed: 836 (+39) Fatal HW Error: 4
20160324173034: tx failed: 873 (+37) Fatal HW Error: 4
20160324173035: tx failed: 913 (+40) Fatal HW Error: 4
20160324173036: tx failed: 953 (+40) Fatal HW Error: 4
20160324173037: tx failed: 992 (+39) Fatal HW Error: 4
20160324173038: tx failed: 1032 (+40) Fatal HW Error: 4
20160324173039: tx failed: 1071 (+39) Fatal HW Error: 4
20160324173040: tx failed: 1110 (+39) Fatal HW Error: 4
20160324173041: tx failed: 1150 (+40) Fatal HW Error: 4
20160324173043: tx failed: 1187 (+37) Fatal HW Error: 4
20160324173044: tx failed: 1227 (+40) Fatal HW Error: 4
20160324173045: tx failed: 1267 (+40) Fatal HW Error: 4
20160324173046: tx failed: 1305 (+38) Fatal HW Error: 4
20160324173047: tx failed: 1343 (+38) Fatal HW Error: 4
20160324173048: tx failed: 1376 (+33) Fatal HW Error: 4
20160324173049: tx failed: 1404 (+28) Fatal HW Error: 4
20160324173050: tx failed: 1432 (+28) Fatal HW Error: 4 <--
Client bridge dies right about here.
20160324173051: tx failed: 1439 (+7) Fatal HW Error: 4
20160324173052: tx failed: 1451 (+12) Fatal HW Error: 4
20160324173053: tx failed: 1459 (+8) Fatal HW Error: 4
20160324173054: tx failed: 1462 (+3) Fatal HW Error: 4
20160324173055: tx failed: 1463 (+1) Fatal HW Error: 4
20160324173056: tx failed: 1464 (+1) Fatal HW Error: 4
20160324173057: tx failed: 1476 (+12) Fatal HW Error: 4
20160324173058: tx failed: 1480 (+4) Fatal HW Error: 4
20160324173100: tx failed: 1484 (+4) Fatal HW Error: 4
20160324173101: tx failed: 1491 (+7) Fatal HW Error: 4
20160324173102: tx failed: 1506 (+15) Fatal HW Error: 4
20160324173103: tx failed: 1517 (+11) Fatal HW Error: 4
20160324173104: tx failed: 1522 (+5) Fatal HW Error: 4
20160324173105: tx failed: 1531 (+9) Fatal HW Error: 4
20160324173106: tx failed: 1540 (+9) Fatal HW Error: 4
20160324173107: tx failed: 1545 (+5) Fatal HW Error: 4
20160324173108: tx failed: 1551 (+6) Fatal HW Error: 4
20160324173109: tx failed: 1560 (+9) Fatal HW Error: 4
20160324173110: tx failed: 1564 (+4) Fatal HW Error: 4
20160324173111: tx failed: 1571 (+7) Fatal HW Error: 4
20160324173112: tx failed: 4 (+-1567) Fatal HW Error: 4 <--
interface reset on client reassociation.
20160324173113: tx failed: 4 (+0) Fatal HW Error: 4
20160324173114: tx failed: 4 (+0) Fatal HW Error: 4
}}}
However, of about half of the outages I experience look like this. In the
other half, there are no tx failures when an outage occurs. The Fatal HW
Errors happen at random rather than when I see tx failures, so no apparent
correlation there.
I wanted to try a USB 5Ghz adapter but when I did I ran into bug #22090,
so fuck my life.
--
Ticket URL: <https://dev.openwrt.org/ticket/22075#comment:3>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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