I booted my x86/64 desktop from a usb drive onto OpenWrt 19.07.6 r11278-8055e38794 and installed firmware iwlwifi-firmware-iwl8260c to see if would work with my ASUS PCE-AC55BT card . The card info is Dual Band Wireless AC 8260, REV=0x208 . Info about this card says it will work in AP mode.
Openwrt 'sees' the card but only a 5GHZ entry is created in config/wireless and I immediately start seeing stack traces . I get this behavior if I compile openwrt from scratch as well . The device never gets beyond the 'device is not active' status . The 'iw list' command shows all the card info for both 2.4 and 5 GHZ .
Any ideas ?
Heres the trace
[ 117.452820] ------------[ cut here ]------------
[ 117.453231] WARNING: CPU: 7 PID: 1826 at 0xffffffffa01c303a
[cfg80211@ffffffffa01a7000+0x37000]
[ 117.453923] Modules linked in: pppoe ppp_async iwlmvm iwldvm pppox
ppp_generic nf_conntrack_ipv6 mac80211 iwlwifi iptable_nat ipt_REJECT
ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport
xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT
xt_LOG xt_FLOWOFFLOAD xt_CT slhc r8169 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 nf_conntrack iptable_mangle iptable_filter
ip_tables e1000e crc_ccitt compat bnx2 i2c_dev nf_log_ipv6 nf_log_common
ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables
nf_reject_ipv6 igb e1000 button_hotplug ptp pps_core mii
[ 117.458350] CPU: 7 PID: 1826 Comm: rpcd Tainted: G W
4.14.215 #0
[ 117.458908] Hardware name: System manufacturer System Product
Name/PRIME B450M-A, BIOS 2202 07/14/2020
[ 117.459643] task: ffff88840c9ac680 task.stack: ffffc900002f8000
[ 117.460143] RIP: 0010:0xffffffffa01c303a
[cfg80211@ffffffffa01a7000+0x37000]
[ 117.460696] RSP: 0018:ffffc900002fbad8 EFLAGS: 00010202
[ 117.461172] RAX: 0000000000000000 RBX: ffff888409e51400 RCX:
0000000000000000
[ 117.461750] RDX: ffff88840b490008 RSI: 0000000000000000 RDI:
ffff88840b490300
[ 117.462333] RBP: ffffc900002fbb10 R08: 0000000000000004 R09:
ffff88840aa4c014
[ 117.462907] R10: 0000000000000014 R11: 0000000000000ec0 R12:
ffffc900002fbb38
[ 117.463515] R13: 0000000000000000 R14: ffff88840aa4c014 R15:
ffff88840b490300
[ 117.464110] FS: 00007f7967b6ed68(0000) GS:ffff88841efc0000(0000)
knlGS:0000000000000000
[ 117.464739] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 117.465226] CR2: 00007fb84b7ee968 CR3: 000000040c958000 CR4:
00000000003406e0
[ 117.465820] Call Trace:
[ 117.466112] 0xffffffff81648ac6
[ 117.466413] 0xffffffff81648b8f
[ 117.466715] ? 0xffffffff81648b40
[ 117.467046] 0xffffffff8164777b
[ 117.467346] 0xffffffff81647cb3
[ 117.467667] 0xffffffff81646ff0
[ 117.467967] 0xffffffff816473e6
[ 117.468285] ? 0xffffffff816470a0
[ 117.468624] 0xffffffff815facd5
[ 117.468925] ? 0xffffffffa01a944c [cfg80211@ffffffffa01a7000+0x37000]
[ 117.469439] ? 0xffffffff8114dfde
[ 117.469765] ? 0xffffffff81285af6
[ 117.470092] ? 0xffffffff8117353e
[ 117.470403] 0xffffffff815fba62
[ 117.470744] ? 0xffffffff815fba62
[ 117.471055] 0xffffffff815fba99
[ 117.471375] 0xffffffff81003023
[ 117.471675] 0xffffffff81800085
[ 117.471990] RIP: 0033:0x7f7967b50c23
[ 117
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