Comment 36 for bug 1730331

Same here on Dell XPS 13 9370 running Fedora 29. The solution from the Arch Linux Forums[1] seems to help, i.e. running:

echo 1 | sudo tee /sys/bus/pci/rescan

Debug data below.

[1] https://bbs.archlinux.org/viewtopic.php?id=231896

Kernel:

Linux arnieworld 4.19.10-300.fc29.x86_64 #1 SMP Mon Dec 17 15:34:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Device:

02:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)
 Subsystem: Bigfoot Networks, Inc. Killer 1435 Wireless-AC
 Flags: bus master, fast devsel, latency 0, IRQ 136
 Memory at dc000000 (64-bit, non-prefetchable) [size=2M]
 Capabilities: [40] Power Management version 3
 Capabilities: [50] MSI: Enable+ Count=1/8 Maskable+ 64bit-
 Capabilities: [70] Express Endpoint, MSI 00
 Capabilities: [100] Advanced Error Reporting
 Capabilities: [148] Virtual Channel
 Capabilities: [168] Device Serial Number 00-00-00-00-00-00-00-00
 Capabilities: [178] Latency Tolerance Reporting
 Capabilities: [180] L1 PM Substates
 Kernel driver in use: ath10k_pci
 Kernel modules: ath10k_pci

Firmware package:

Installed Packages
Name : linux-firmware
Version : 20181219
Release : 89.git0f22c852.fc29
Arch : noarch
Size : 328 M
Source : linux-firmware-20181219-89.git0f22c852.fc29.src.rpm
Repo : @System
From repo : updates
Summary : Firmware files used by the Linux kernel
URL : http://www.kernel.org/
License : GPL+ and GPLv2+ and MIT and Redistributable, no modification permitted
Description : This package includes firmware files required for some devices to
             : operate.

Dmesg (was woken from suspend):

[378842.718993] PM: suspend entry (s2idle)
[378842.718994] PM: Syncing filesystems ... done.
[378842.735193] Freezing user space processes ... (elapsed 0.225 seconds) done.
[378842.960661] OOM killer disabled.
[378842.960662] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[378842.962540] Suspending console(s) (use no_console_suspend to debug)
[378843.287087] PM: suspend devices took 0.324 seconds
[380686.688006] ath10k_pci 0000:02:00.0: Unknown eventid: 118809
[380686.775577] WARNING: CPU: 6 PID: 29126 at drivers/net/wireless/ath/ath10k/mac.c:5625 ath10k_bss_info_changed+0xd2e/0xe70 [ath10k_core]
[380686.775578] Modules linked in: cmac thunderbolt ccm fuse rfcomm tun bridge stp llc devlink libcrc32c ip_set nfnetlink arc4 bnep sunrpc vfat fat hid_multitouch snd_hda_codec_hdmi snd_soc_skl ath10k_pci snd_soc_skl_ipc ath10k_core snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_codec_realtek snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_hda_codec_generic snd_soc_core snd_compress mac80211 ac97_bus snd_pcm_dmaengine dell_laptop iTCO_wdt mei_wdt snd_hda_intel iTCO_vendor_support dell_wmi uvcvideo dell_smbios intel_rapl wmi_bmof x86_pkg_temp_thermal intel_powerclamp snd_hda_codec intel_wmi_thunderbolt videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 coretemp snd_hda_core videobuf2_common snd_hwdep dell_wmi_descriptor dcdbas snd_seq kvm_intel videodev btusb snd_seq_device btrtl btbcm snd_pcm intel_cstate
[380686.775612] ath btintel bluetooth cfg80211 media intel_uncore intel_rapl_perf snd_timer idma64 rtsx_pci_ms mei_me snd joydev ecdh_generic intel_lpss_pci memstick ucsi_acpi mei soundcore intel_lpss intel_pch_thermal typec_ucsi i2c_i801 processor_thermal_device rfkill intel_soc_dts_iosf typec wmi int3400_thermal acpi_thermal_rel acpi_pad int3403_thermal intel_hid int340x_thermal_zone pcc_cpufreq sparse_keymap dm_crypt i915 kvmgt mdev vfio kvm irqbypass i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core crct10dif_pclmul crc32_pclmul crc32c_intel drm nvme ghash_clmulni_intel nvme_core serio_raw rtsx_pci i2c_hid pinctrl_sunrisepoint pinctrl_intel video [last unloaded: ip6_tables]
[380686.775645] CPU: 6 PID: 29126 Comm: kworker/u16:21 Tainted: G W 4.19.10-300.fc29.x86_64 #1
[380686.775646] Hardware name: Dell Inc. XPS 13 9370/0VM1FG, BIOS 1.6.3 11/04/2018
[380686.775651] Workqueue: events_unbound async_run_entry_fn
[380686.775657] RIP: 0010:ath10k_bss_info_changed+0xd2e/0xe70 [ath10k_core]
[380686.775659] Code: 89 c1 89 f2 4c 89 d7 48 c7 c6 38 07 c8 c0 4c 89 4c 24 10 89 44 24 08 e8 70 34 00 00 8b 44 24 08 4c 8b 4c 24 10 e9 a1 f8 ff ff <0f> 0b e9 d5 f5 ff ff 8b b3 68 01 00 00 89 f2 89 c1 48 c7 c6 f8 06
[380686.775660] RSP: 0018:ffffb34c01477cc0 EFLAGS: 00010246
[380686.775661] RAX: 0000000000000000 RBX: ffffa06a8c18d3a0 RCX: 0000000000000000
[380686.775662] RDX: 0000000000000001 RSI: 00000000fffffe01 RDI: ffffffffc0c1945e
[380686.775663] RBP: 0000000002000000 R08: 0000000000200000 R09: 0000000000000000
[380686.775664] R10: 000000000000001f R11: ffffa06a73b6c400 R12: ffffa06a8c18d3a8
[380686.775665] R13: ffffa06aa1b11540 R14: ffffa06aa1b11540 R15: ffffa06a8c18d4f8
[380686.775666] FS: 0000000000000000(0000) GS:ffffa06aa6580000(0000) knlGS:0000000000000000
[380686.775667] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[380686.775668] CR2: 00007f6b1ab20780 CR3: 000000019120a001 CR4: 00000000003606e0
[380686.775668] Call Trace:
[380686.775676] ? ath10k_conf_tx+0x7a/0x4b0 [ath10k_core]
[380686.775695] ieee80211_bss_info_change_notify+0xab/0x1a0 [mac80211]
[380686.775712] ieee80211_reconfig+0x656/0x12b0 [mac80211]
[380686.775715] ? enqueue_entity+0xf6/0x680
[380686.775733] wiphy_resume+0x7f/0x120 [cfg80211]
[380686.775743] ? wiphy_suspend+0x270/0x270 [cfg80211]
[380686.775746] dpm_run_callback+0x59/0x150
[380686.775749] device_resume+0xac/0x1f0
[380686.775751] async_resume+0x19/0x30
[380686.775753] async_run_entry_fn+0x39/0x160
[380686.775756] process_one_work+0x1a1/0x3a0
[380686.775758] worker_thread+0x30/0x380
[380686.775760] ? pwq_unbound_release_workfn+0xd0/0xd0
[380686.775762] kthread+0x112/0x130
[380686.775764] ? kthread_create_worker_on_cpu+0x70/0x70
[380686.775767] ret_from_fork+0x35/0x40
[380686.775769] ---[ end trace 41c241226595342c ]---
[380686.776481] PM: resume devices took 0.777 seconds
[380686.776484] OOM killer enabled.
[380686.776484] Restarting tasks ... done.
[380686.823797] PM: suspend exit
[380686.846069] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[380687.605462] ath10k_pci 0000:02:00.0: Unknown eventid: 118809
[380687.663728] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[380687.694826] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[380692.399919] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
[380697.116703] wlp2s0: authenticate with 74:85:2a:29:0c:71
[380697.160638] wlp2s0: send auth to 74:85:2a:29:0c:71 (try 1/3)
[380697.162375] wlp2s0: authenticated
[380697.163406] wlp2s0: associate with 74:85:2a:29:0c:71 (try 1/3)
[380697.167152] wlp2s0: RX AssocResp from 74:85:2a:29:0c:71 (capab=0x1411 status=0 aid=1)
[380697.169363] wlp2s0: associated
[380697.205064] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready