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linux:openwrt:wifi:dfs [2023/12/29 10:31] – created niziaklinux:openwrt:wifi:dfs [2023/12/29 17:19] (current) – niziak
Line 40: Line 40:
 hostapd: phy1-ap0: DFS-CAC-COMPLETED success=1 freq=5600 ht_enabled=0 chan_offset=0 chan_width=3 cf1=5610 cf2=0 hostapd: phy1-ap0: DFS-CAC-COMPLETED success=1 freq=5600 ht_enabled=0 chan_offset=0 chan_width=3 cf1=5610 cf2=0
 </code> </code>
 +
 +Workaround to disable DFS is to switch to ''Panama'' country code:
 +<code>
 +iw reg get
 +global
 +country PL: DFS-ETSI
 + (2400 - 2483 @ 40), (N/A, 20), (N/A)
 + (5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW
 + (5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW
 + (5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS
 + (5725 - 5875 @ 80), (N/A, 13), (N/A)
 + (5945 - 6425 @ 160), (N/A, 23), (N/A), NO-OUTDOOR
 + (57000 - 66000 @ 2160), (N/A, 40), (N/A)
 +
 +uci set wireless.radio1.country='PA'
 +uci commit
 +
 +iw reg get
 +global
 +country PA: DFS-FCC
 + (2400 - 2483 @ 40), (N/A, 36), (N/A)
 + (5150 - 5250 @ 80), (N/A, 36), (N/A), AUTO-BW
 + (5250 - 5350 @ 80), (N/A, 30), (N/A), AUTO-BW
 + (5470 - 5725 @ 160), (N/A, 30), (N/A)
 + (5725 - 5850 @ 80), (N/A, 36), (N/A)
 + (57000 - 64000 @ 2160), (N/A, 43), (N/A)
 +</code>
 +
 +References:
 +  * https://www.reddit.com/r/openwrt/comments/twvf7i/dfsweather_radarsatellites_wifi_crashing/
 +  * https://www.reddit.com/r/openwrt/comments/rs9pit/dfs_radar_causes_5ghz_to_drop_and_it_doesnt_come/
 +  * https://git.kernel.org/pub/scm/linux/kernel/git/sforshee/wireless-regdb.git/tree/db.txt
 +  * [[https://github.com/openwrt/openwrt/issues/14253|DFS start_dfs_cac() failed - wifi not enabled after 30 minute delay. #14253]]
 +  * https://github.com/openwrt/openwrt/issues/9864
 +  * [[https://github.com/NilsRo/Openwrt-radio-check|Openwrt-radio-check]]
 +