Cannot reach 1300Mbps using DW1830 (BCM943602BAED) with linux-firmware

[kevin335200]

I cannot reach 1300Mbps using DW1830 (BCM943602BAED) with linux-firmware, only 985Mbps maximum.
It works fine under win10.
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: XFCE
Dependencies:

DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2019-01-07 (136 days ago)
InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Package: linux-firmware 1.173.6
PackageArchitecture: all
Tags: bionic
Uname: Linux 5.2.0-050200rc1-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip kvm libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: zz 1947 F.... pulseaudio
 /dev/snd/controlC1: zz 1947 F.... pulseaudio
CurrentDesktop: XFCE
Dependencies:

DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=476fdc81-601b-4873-9a2d-bb31c386751d
InstallationDate: Installed on 2019-01-07 (136 days ago)
InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: LENOVO 20AMS0SQ04
Package: linux-firmware 1.173.6
PackageArchitecture: all
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-43-generic root=UUID=f1dabdd1-cb25-441e-b278-17d5788a6ebc ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-43-generic N/A
 linux-backports-modules-4.15.0-43-generic N/A
 linux-firmware 1.173.6
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: bionic
Uname: Linux 4.15.0-43-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip kvm libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 08/01/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: GIET86WW (2.36 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20AMS0SQ04
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrGIET86WW(2.36):bd08/01/2016:svnLENOVO:pn20AMS0SQ04:pvrThinkPadX240:rvnLENOVO:rn20AMS0SQ04:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad X240
dmi.product.name: 20AMS0SQ04
dmi.product.version: ThinkPad X240
dmi.sys.vendor: LENOVO

[kevin335200 (kevin335200)]

Mai 22 15:01:29 kevin335200 kernel: brcmfmac: brcmf_fw_map_chip_to_name: using brcm/brcmfmac43602-pcie.bin for chip 0x00aa52(43602) rev 0x000001
Mai 22 15:01:29 kevin335200 kernel: brcmfmac 0000:03:00.0: Direct firmware load for brcm/brcmfmac43602-pcie.txt failed with error -2
Mai 22 15:01:31 kevin335200 kernel: brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Nov 10 2015 06:38:10 version 7.35.177.61 (r598657) FWID 01-ea662a8c

Maybe the firmware version is too old?

[Kai-Heng Feng (kaihengfeng)]

Does the actually network speed affected by this bug?

[kevin335200 (kevin335200)]

Yes, especially the upload speed.

With Speedtest:

Win10:
Download: 532.83 Mbps
Upload: 442.89 Mbps

Ubuntu:
Download: 538.39 Mbps
Upload: 62.68 Mbps

LAN:
Download: 624.76 Mbps
Upload: 879.72 Mbps

[Kai-Heng Feng (kaihengfeng)]

Please see if mainline kernel helps:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.2-rc1/

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1830090

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

Nope. Same speed

[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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[kevin335200 (kevin335200)]

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