Comment 0 for bug 1836801

[Description]

The wifi device BCM43602 802.11ac Wireless (PCI ID 14e4:43ba) running with the proposed kernel 4.4.0-155.182-generic will cause kernel trace[1]. However the wifi function works properly with the kernel 4.4.0-154.181

[Steps to Reproduce]
1. Install ubuntu xenial, enable the proposed repository, and update the system with "sudo apt-get dist-upgrade"
2. nmcli d wifi rescan
3. nmcli -t -f SSID,CHAN,FREQ,SIGNAL d wifi list ifname wlp2s0 (if your wifi interface is wlp2s0), you will see the available SSIDs in your environment.
4. nmcli d wifi connect <SSID> ifname wlp2s0 name TEST_CON

[Expected Result]
The AP is connected

[Actual Result]
You will get the message: "Error: Connection activation failed: (5) IP configuration could not be reserved (no available address, timeout, etc.)." and the kernel trace from /var/log/syslog[1]

[More Information]

[1] The kernel trace log
hecking kernel ring buffer for brcmfmac messages:
kern :info : [Tue Jul 16 09:58:34 2019] usbcore: registered new interface driver brcmfmac
kern :warn : [Tue Jul 16 09:58:34 2019] brcmfmac 0000:02:00.0: Direct firmware load for brcm/brcmfmac43602-pcie.txt failed with error -2
kern :info : [Tue Jul 16 09:58:35 2019] brcmfmac 0000:02:00.0 wlp2s0: renamed from wlan0
kern :warn : [Tue Jul 16 10:08:01 2019] Modules linked in: rfcomm bnep snd_hda_codec_hdmi dell_led snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec i2c_designware_platform i2c_designware_core snd_hda_core snd_hwd
ep snd_pcm dell_wmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_seq_midi dell_laptop kvm irqbypass crct10dif_pclmul crc32_pclmul dcdbas ghash_clmulni_intel snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device
 aesni_intel snd_timer aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd input_leds joydev soundcore serio_raw brcmfmac cdc_ether rtsx_pci_ms brcmutil usbnet memstick btusb btrtl uvcvideo btbcm cfg80211 videobuf2_vmalloc btintel
 videobuf2_memops r8152 bluetooth mii videobuf2_v4l2 idma64 virt_dma videobuf2_core mei_me v4l2_common intel_lpss_pci intel_lpss
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc077e983>] brcmf_netif_rx+0x73/0xa0 [brcmfmac]
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc07844f2>] brcmf_msgbuf_process_rx+0x142/0x5f0 [brcmfmac]
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc0784ed1>] brcmf_proto_msgbuf_rx_trigger+0x31/0xe0 [brcmfmac]
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc07911fa>] brcmf_pcie_isr_thread_v2+0x17a/0x1e0 [brcmfmac]
kern :warn : [Tue Jul 16 10:08:01 2019] Modules linked in: rfcomm bnep snd_hda_codec_hdmi dell_led snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec i2c_designware_platform i2c_designware_core snd_hda_core snd_hwd
ep snd_pcm dell_wmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_seq_midi dell_laptop kvm irqbypass crct10dif_pclmul crc32_pclmul dcdbas ghash_clmulni_intel snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device
 aesni_intel snd_timer aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd input_leds joydev soundcore serio_raw brcmfmac cdc_ether rtsx_pci_ms brcmutil usbnet memstick btusb btrtl uvcvideo btbcm cfg80211 videobuf2_vmalloc btintel
 videobuf2_memops r8152 bluetooth mii videobuf2_v4l2 idma64 virt_dma videobuf2_core mei_me v4l2_common intel_lpss_pci intel_lpss
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc077e983>] brcmf_netif_rx+0x73/0xa0 [brcmfmac]
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc07844f2>] brcmf_msgbuf_process_rx+0x142/0x5f0 [brcmfmac]
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc0784ed1>] brcmf_proto_msgbuf_rx_trigger+0x31/0xe0 [brcmfmac]
kern :warn : [Tue Jul 16 10:08:01 2019] [<ffffffffc07911fa>] brcmf_pcie_isr_thread_v2+0x17a/0x1e0 [brcmfmac]

[Known Affected Platforms]

Dell XPS 15 9550 (CID 201606-22346)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-155-generic 4.4.0-155.182
ProcVersionSignature: Ubuntu 4.4.0-155.182-generic 4.4.181
Uname: Linux 4.4.0-155-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.19
Architecture: amd64
Date: Tue Jul 16 15:57:36 2019
InstallationDate: Installed on 2018-01-11 (551 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)