I have a problem that looks very similar to this one, but it's happening with linux-firmware 1.173.9 and only on my home 5 GHz SSID (the 2.4 GHz SSID connects fine). What do I need to send you in order to have it fixed?

I started getting this after getting a new router. The router I had before didn't trigger this.

Machine: Lenovo X1 Carbon gen 6 (X1C6)
Ubuntu: bionic 64-bit
Linux: 4.15.0-58-generic
linux-firmware: 1.173.9
LSB Version:	core-9.20170808ubuntu1-noarch:printing-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch

Crash:

[86031.121562] wlp2s0: send auth to a6:91:b1:5e:99:45 (try 3/3)
[86032.113366] wlp2s0: authentication with a6:91:b1:5e:99:45 timed out
[86036.577590] wlp2s0: authenticate with a6:91:b1:5e:99:45
[86036.588658] wlp2s0: send auth to a6:91:b1:5e:99:45 (try 1/3)
[86036.594500] iwlwifi 0000:02:00.0: Microcode SW error detected.  Restarting 0x2000000.
[86036.594648] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[86036.594656] iwlwifi 0000:02:00.0: Status: 0x00000100, count: 6
[86036.594661] iwlwifi 0000:02:00.0: Loaded firmware version: 34.0.1
[86036.594668] iwlwifi 0000:02:00.0: 0x00001006 | ADVANCED_SYSASSERT          
[86036.594674] iwlwifi 0000:02:00.0: 0x00000230 | trm_hw_status0
[86036.594679] iwlwifi 0000:02:00.0: 0x00000000 | trm_hw_status1
[86036.594685] iwlwifi 0000:02:00.0: 0x00023FDC | branchlink2
[86036.594690] iwlwifi 0000:02:00.0: 0x0003915A | interruptlink1
[86036.594696] iwlwifi 0000:02:00.0: 0x00000000 | interruptlink2
[86036.594701] iwlwifi 0000:02:00.0: 0xFFFFF222 | data1
[86036.594707] iwlwifi 0000:02:00.0: 0xDEADBEEF | data2
[86036.594712] iwlwifi 0000:02:00.0: 0xDEADBEEF | data3
[86036.594717] iwlwifi 0000:02:00.0: 0x00036150 | beacon time
[86036.594723] iwlwifi 0000:02:00.0: 0x00681ECC | tsf low
[86036.594728] iwlwifi 0000:02:00.0: 0x00000000 | tsf hi
[86036.594733] iwlwifi 0000:02:00.0: 0x00000000 | time gp1
[86036.594739] iwlwifi 0000:02:00.0: 0x00681ECD | time gp2
[86036.594744] iwlwifi 0000:02:00.0: 0x00000001 | uCode revision type
[86036.594750] iwlwifi 0000:02:00.0: 0x00000022 | uCode version major
[86036.594755] iwlwifi 0000:02:00.0: 0x00000000 | uCode version minor
[86036.594760] iwlwifi 0000:02:00.0: 0x00000230 | hw version
[86036.594766] iwlwifi 0000:02:00.0: 0x00489000 | board version
[86036.594771] iwlwifi 0000:02:00.0: 0x0550001C | hcmd
[86036.594777] iwlwifi 0000:02:00.0: 0x26023008 | isr0
[86036.594782] iwlwifi 0000:02:00.0: 0x01050000 | isr1
[86036.594787] iwlwifi 0000:02:00.0: 0x08001802 | isr2
[86036.594792] iwlwifi 0000:02:00.0: 0x4041FDC0 | isr3
[86036.594797] iwlwifi 0000:02:00.0: 0x00000000 | isr4
[86036.594803] iwlwifi 0000:02:00.0: 0x00520118 | last cmd Id
[86036.594808] iwlwifi 0000:02:00.0: 0x00000000 | wait_event
[86036.594813] iwlwifi 0000:02:00.0: 0x00000080 | l2p_control
[86036.594819] iwlwifi 0000:02:00.0: 0x00010030 | l2p_duration
[86036.594824] iwlwifi 0000:02:00.0: 0x0000003F | l2p_mhvalid
[86036.594829] iwlwifi 0000:02:00.0: 0x00000080 | l2p_addr_match
[86036.594835] iwlwifi 0000:02:00.0: 0x0000000D | lmpm_pmg_sel
[86036.594840] iwlwifi 0000:02:00.0: 0x30101345 | timestamp
[86036.594846] iwlwifi 0000:02:00.0: 0x00006070 | flow_handler
[86036.594914] iwlwifi 0000:02:00.0: Start IWL Error Log Dump:
[86036.594920] iwlwifi 0000:02:00.0: Status: 0x00000100, count: 7
[86036.594926] iwlwifi 0000:02:00.0: 0x00000070 | ADVANCED_SYSASSERT
[86036.594931] iwlwifi 0000:02:00.0: 0x00000000 | umac branchlink1
[86036.594937] iwlwifi 0000:02:00.0: 0xC0086964 | umac branchlink2
[86036.594942] iwlwifi 0000:02:00.0: 0xC0083A94 | umac interruptlink1
[86036.594948] iwlwifi 0000:02:00.0: 0xC0083A94 | umac interruptlink2
[86036.594953] iwlwifi 0000:02:00.0: 0x00000800 | umac data1
[86036.594958] iwlwifi 0000:02:00.0: 0xC0083A94 | umac data2
[86036.594963] iwlwifi 0000:02:00.0: 0xDEADBEEF | umac data3
[86036.594969] iwlwifi 0000:02:00.0: 0x00000022 | umac major
[86036.594974] iwlwifi 0000:02:00.0: 0x00000000 | umac minor
[86036.594979] iwlwifi 0000:02:00.0: 0xC088628C | frame pointer
[86036.594984] iwlwifi 0000:02:00.0: 0xC088628C | stack pointer
[86036.594990] iwlwifi 0000:02:00.0: 0x00520118 | last host cmd
[86036.594995] iwlwifi 0000:02:00.0: 0x00000000 | isr status reg
[86036.595003] ieee80211 phy0: Hardware restart was requested
[86037.346887] wlp2s0: send auth to a6:91:b1:5e:99:45 (try 2/3)
[86038.129366] WARNING: CPU: 6 PID: 6010 at /build/linux-hwVdeu/linux-4.15.0/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c:529 iwl_mvm_time_event_send_add+0x1bd/0x1e0 [iwlmvm]
[86038.129370] Modules linked in: ccm xt_nat veth rfcomm pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) thunderbolt ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat nf_nat_ipv4 xt_addrtype nf_nat br_netfilter bridge stp llc xt_tcpudp vmw_vsock_vmci_transport vsock nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack vmw_vmci iptable_filter cmac snd_hrtimer aufs overlay msr bnep binfmt_misc nls_iso8859_1 cdc_ether arc4 usbnet intel_rapl r8152 x86_pkg_temp_thermal intel_powerclamp snd_soc_skl mii snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_dsp snd_soc_sst_ipc uvcvideo snd_soc_acpi snd_hda_codec_hdmi kvm_intel videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core snd_soc_core kvm videodev snd_hda_codec_realtek snd_hda_codec_generic
[86038.129464]  irqbypass btusb snd_compress media snd_seq_midi btrtl btbcm btintel ac97_bus bluetooth iwlmvm intel_cstate snd_pcm_dmaengine snd_hda_intel snd_seq_midi_event intel_rapl_perf ecdh_generic mac80211 joydev snd_hda_codec snd_rawmidi iwlwifi input_leds serio_raw snd_hda_core snd_hwdep cfg80211 snd_seq snd_pcm thinkpad_acpi mei_me snd_seq_device intel_wmi_thunderbolt wmi_bmof nvram snd_timer mei shpchp intel_pch_thermal processor_thermal_device intel_soc_dts_iosf snd ucsi_acpi typec_ucsi typec int3403_thermal int340x_thermal_zone soundcore int3400_thermal acpi_thermal_rel mac_hid acpi_pad sch_fq_codel nfsd coretemp auth_rpcgss nfs_acl parport_pc lockd ppdev grace lp sunrpc parport ip_tables x_tables autofs4 btrfs zstd_compress algif_skcipher af_alg dm_crypt raid10 raid456 async_raid6_recov
[86038.129572]  async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear dm_mirror dm_region_hash dm_log crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel i915 aes_x86_64 crypto_simd i2c_algo_bit glue_helper cryptd drm_kms_helper e1000e syscopyarea psmouse sysfillrect sysimgblt nvme ptp fb_sys_fops pps_core drm nvme_core wmi i2c_hid video hid
[86038.129639] CPU: 6 PID: 6010 Comm: kworker/u16:39 Tainted: G        W  O     4.15.0-58-generic #64-Ubuntu
[86038.129641] Hardware name: LENOVO 20KHCTO1WW/20KHCTO1WW, BIOS N23ET63W (1.38 ) 04/20/2019
[86038.129689] Workqueue: phy0 ieee80211_iface_work [mac80211]
[86038.129713] RIP: 0010:iwl_mvm_time_event_send_add+0x1bd/0x1e0 [iwlmvm]
[86038.129716] RSP: 0018:ffffc02a06957c20 EFLAGS: 00010287
[86038.129720] RAX: 0000000000000000 RBX: ffff9beaccc83548 RCX: ffffffffc0b284a0
[86038.129723] RDX: 0000000000000001 RSI: 0000000000000020 RDI: ffff9beacd50efc0
[86038.129726] RBP: ffffc02a06957c90 R08: ffffffffc0b2ebaa R09: 0000000000000258
[86038.129728] R10: ffffc02a06957cb0 R11: 0000000000000258 R12: ffff9beacd50d528
[86038.129731] R13: ffffc02a06957cba R14: ffff9beacd50efc0 R15: ffff9beaccc83380
[86038.129735] FS:  0000000000000000(0000) GS:ffff9beae2580000(0000) knlGS:0000000000000000
[86038.129738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[86038.129741] CR2: 00007fad5b64f020 CR3: 0000000350a0a001 CR4: 00000000003606e0
[86038.129743] Call Trace:
[86038.129767]  iwl_mvm_protect_session+0x19c/0x2a0 [iwlmvm]
[86038.129781]  ? iwl_mvm_protect_session+0x19c/0x2a0 [iwlmvm]
[86038.129792]  ? _cond_resched+0x19/0x40
[86038.129805]  ? iwl_mvm_ref_sync+0x33/0x100 [iwlmvm]
[86038.129811]  ? enqueue_entity+0x10e/0x6b0
[86038.129824]  iwl_mvm_mac_mgd_prepare_tx+0x5b/0x80 [iwlmvm]
[86038.129836]  ? iwl_mvm_mac_mgd_prepare_tx+0x5b/0x80 [iwlmvm]
[86038.129880]  ieee80211_auth+0x92/0x2d0 [mac80211]
[86038.129917]  ieee80211_sta_work+0x4a7/0x770 [mac80211]
[86038.129923]  ? ttwu_do_activate+0x77/0x80
[86038.129955]  ieee80211_iface_work+0x2bd/0x330 [mac80211]
[86038.129963]  process_one_work+0x1de/0x420
[86038.129968]  worker_thread+0x32/0x410
[86038.129973]  kthread+0x121/0x140
[86038.129978]  ? process_one_work+0x420/0x420
[86038.129982]  ? kthread_create_worker_on_cpu+0x70/0x70
[86038.129987]  ret_from_fork+0x35/0x40
[86038.129990] Code: 89 c5 75 39 48 8b 4d c8 65 48 33 0c 25 28 00 00 00 44 89 e8 75 2e 48 83 c4 40 5b 41 5a 41 5c 41 5d 41 5e 41 5f 5d 49 8d 62 f8 c3 <0f> 0b 4c 89 f7 41 bd fb ff ff ff e8 33 85 89 ce eb c7 0f 0b e9 
[86038.130078] ---[ end trace 64b9d682a5b05f1b ]---