Kernel suspended for 11 seconds during boot

Installing and Using OpenWrt
1

Is this the expected behaviour?
dmesg log snippet -

[   57.498512] br-lan: port 2(phy1-ap0) entered blocking state
[   57.504347] br-lan: port 2(phy1-ap0) entered disabled state
[   57.510274] ath9k 18100000.wmac phy1-ap0: entered allmulticast mode
[   57.517262] ath9k 18100000.wmac phy1-ap0: entered promiscuous mode
[   60.865846] ath10k_pci 0000:00:00.0: wmi print 'P 128 V 8 T 410'
[   60.872098] ath10k_pci 0000:00:00.0: wmi print 'msdu-desc: 1424  sw-crypt: 0 ct-sta: 0'
[   60.880662] ath10k_pci 0000:00:00.0: wmi print 'alloc rem: 24984 iram: 38672'
[   60.983446] ath10k_pci 0000:00:00.0: rts threshold -1
[   61.005836] br-lan: port 3(phy0-ap0) entered blocking state
[   61.011764] br-lan: port 3(phy0-ap0) entered disabled state
[   61.017734] ath10k_pci 0000:00:00.0 phy0-ap0: entered allmulticast mode
[   61.024908] ath10k_pci 0000:00:00.0 phy0-ap0: entered promiscuous mode
[   61.032107] br-lan: port 3(phy0-ap0) entered blocking state
[   61.037962] br-lan: port 3(phy0-ap0) entered forwarding state
[   61.045139] br-lan: port 3(phy0-ap0) entered disabled state
[   69.174235] br-lan: port 2(phy1-ap0) entered blocking state

[ 69.180027] br-lan: port 2(phy1-ap0) entered forwarding state
[ 80.173647] br-lan: port 3(phy0-ap0) entered blocking state

[   80.179471] br-lan: port 3(phy0-ap0) entered forwarding state
[   80.213498] br-lan: port 4(phy0-ap1) entered blocking state
[   80.219447] br-lan: port 4(phy0-ap1) entered disabled stat

syslog shows a delay of 42 seconds -

Fri Apr 17 03:21:59 2026 daemon.notice hostapd: phy0-ap0: ACS-COMPLETED freq=5825 channel=165
Fri Apr 17 03:21:59 2026 daemon.notice hostapd: phy0-ap0: interface state ACS->HT_SCAN
Fri Apr 17 03:22:41 2026 local1.info dnsmasq[1]: started, version 2.90 cachesize 1000
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Bedankt, maar dat legde niet uit de gat van 42 seconden (syslog) want de ACS-COMPLETED bericht is voor weergegeven af.
En, waarom is de kernel uitgeschakeld door een ACS operatie?

Fri Apr 17 03:21:39 2026 daemon.notice hostapd: ACS: Automatic channel selection started, this may take a bit
Fri Apr 17 03:21:39 2026 daemon.notice hostapd: phy1-ap0: interface state COUNTRY_UPDATE->ACS
Fri Apr 17 03:21:39 2026 daemon.notice hostapd: phy1-ap0: ACS-STARTED
Fri Apr 17 03:21:43 2026 daemon.notice hostapd: ACS: Automatic channel selection started, this may take a bit
Fri Apr 17 03:21:43 2026 daemon.notice hostapd: phy0-ap0: interface state COUNTRY_UPDATE->ACS
Fri Apr 17 03:21:43 2026 daemon.notice hostapd: phy0-ap0: ACS-STARTED
Fri Apr 17 03:21:49 2026 daemon.notice hostapd: ACS: Survey for freq 2412 is missing noise floor
Fri Apr 17 03:21:49 2026 daemon.notice hostapd: ACS: Survey for freq 2412 is missing noise floor
Fri Apr 17 03:21:49 2026 daemon.notice hostapd: phy1-ap0: ACS-COMPLETED freq=2412 channel=1
Fri Apr 17 03:21:49 2026 daemon.notice hostapd: phy1-ap0: interface state ACS->HT_SCAN
Fri Apr 17 03:21:59 2026 daemon.notice hostapd: phy0-ap0: ACS-COMPLETED freq=5825 channel=165
Fri Apr 17 03:21:59 2026 daemon.notice hostapd: phy0-ap0: interface state ACS->HT_SCAN
4

No hablo Español.

5

The profile image is from a mark of dog food sold in the Netherlands. m'bad, m'kay?

Thanks, but that does not explain the 42 second gap (syslog) because the ACS-COMPLETED message is written before it.
And, why is the kernel suspended for an ACS operation?

HTH