As per @Doppel-D, 18.06.8 seems to work well too, so that would be a better option than 18.06.4 since there are quite good CVE fixes between these releases, among other things.
Yeah I haven't looked at the 18.X releases yet, as I got my new router right after 19.X was finalized. Upgraded from a DDWRT Shibby fork IIRC. I'll pick up whatever is latest if I decide to go that route.
It was a heavy day usage from 2 gaming consoles (wired/wireless), 1 wireless gaming PC, 1 streaming tablet (wireless) and 2 remote work PC stations (wired), along with VPNs, softphone calls, conference calls and WebEx meetings.
No disconnection, rock solid connections everywhere. System log is clean as a whistle from errors or warnings, except for:
daemon.err procd: unable to find /sbin/ujail: No such file or directory (-1)
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.603381] ------------[ cut here ]------------
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.603461] WARNING: CPU: 0 PID: 0 at backports-4.19.98-1/drivers/net/wireless/ath/ath10k/htt_rx.c:1179 0xbf3a0d10 [ath10k_core@bf38a000+0x48000]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.607124] Modules linked in: pppoe ppp_async ath10k_pci ath10k_core ath pppox ppp_generic nf_conntrack_ipv6 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt compat sch_cake nf_conntrack sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.668997] cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_of_simple ohci_platform ohci_hcd phy_qcom_dwc3 ahci ehci_platform sd_mod ahci_platform libahci_platform libahci libata scsi_mod ehci_hcd gpio_button_hotplug
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.704829] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.171 #0
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.727040] Hardware name: Generic DT based system
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.733121] Function entered at [<c030f1c4>] from [<c030b390>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.737891] Function entered at [<c030b390>] from [<c07c0664>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.743794] Function entered at [<c07c0664>] from [<c031fa98>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.749697] Function entered at [<c031fa98>] from [<c031fb84>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.755597] Function entered at [<c031fb84>] from [<bf3a0d10>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.761561] Function entered at [<bf3a0d10>] from [<bf3a2224>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.767405] Function entered at [<bf3a2224>] from [<bf3a29bc>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.773307] Function entered at [<bf3a29bc>] from [<bf3d608c>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.779236] Function entered at [<bf3d608c>] from [<c06a9660>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.785112] Function entered at [<c06a9660>] from [<c03015c8>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.791015] Function entered at [<c03015c8>] from [<c0324000>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.796916] Function entered at [<c0324000>] from [<c0362b60>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.802822] Function entered at [<c0362b60>] from [<c0301488>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.808722] Function entered at [<c0301488>] from [<c030bf8c>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.814626] Exception stack(0xc0a01f48 to 0xc0a01f90)
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.820552] 1f40: 00000001 00000000 00000000 c0315100 ffffe000 c0a03cb8
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.825771] 1f60: c0a03c6c 00000000 00000000 c092ea28 00000000 00000000 c0a01f90 c0a01f98
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.834001] 1f80: c030854c c0308550 60000013 ffffffff
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.842231] Function entered at [<c030bf8c>] from [<c0308550>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.847351] Function entered at [<c0308550>] from [<c03589c8>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.853168] Function entered at [<c03589c8>] from [<c0358d10>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.859069] Function entered at [<c0358d10>] from [<c0900c54>]
Sat Mar 21 20:59:30 2020 kern.warn kernel: [156361.865012] ---[ end trace 3bc62172a69aea2a ]---
Confirm that I have same problem with Wi-Fi since January, when I decided to replace 17.01.5 to 19.07.0 with extended flash space. Next day reinstalled 18.06.6, but problem on all home devices remained.
I migrated from OpenWRT 18.06.04 to 19.07.02 a week ago and no issues so far with wifi.I have 25+ wifi devices on my network (phones, laptops, iot stuff...)
I beleive it's the CT version as I have these 2 packages installed
ath10k-firmware-qca9984-ct
kmod-ath10k-ct
I chose to keep my config while upgrading, all I had to do is install openvpn and sqm packages, all working fine.
I had issues with wifi on 18.06.X, but found the root cause at that time. I was experimenting/trying to do some network monitoring for my IoT devices using ulogd/syslog-ng (based on this article https://balagetech.com/monitor-network-traffic-openwrt-syslog-ng/) but that was writing so much logs into the flash memory. All wifi problems stopped when I stopped ulogd daemon.
Using dumb AP1 Archer c2600
(2 VLANS -> 2 SSIDs, 2x 2.4GHz + 2x 5 GHz, ie each SSID on 2.4 and 5GHz)
-> WiFi disappeared, no GUI or SSH access after a while
-> or laggy WiFi
-> shall I replace wifi firmware or go back to 18.06.8 ?
-> going to be fixed in 19.07.3 ? (quite some devices with qca998x)
Using dumb AP2 pcengines APU2e4 with 2x Compex WLE900VX (also qca988x) same VLAN and SSID stuff as for first AP1
-> iPhones 7 and SE have issues after a while with AP2 (and AP1)
-> overall less issues as for AP1 but not perfect (as with 18.06.4)
-> same questions as above, what do you recommend based on your experience ?
Using x86-64 as Router/Firewall (no wifi no qca988x)
i5-3470 4GB 128GB SSD
ā> already twice down (in maybe 4 weeks), Iām worried...
-> maybe not a topic here, but maybe somebody had similar worse stability than with 18.06 ?