OK -- I have no clue what my issue could be and am starting to get a bit
frustrated with this WiFi chip because it seems like there's nothing I
can do about it. I'm using the Ath10k QCA6174 chipset on a Acer Aspire V
Nitro laptop. Every other device I have connects at a much faster rate
to my Asus AC66U WiFi router, but for the life of me I cannot get my
laptop to connect to it at a rate over 1Mb/s, according to iwconfig and
the nm-applet tool.

I also cannot connect to the 5gz band on the router either, while all my
other devices have no issues. When I got the laptop I was able to
connect to either 2.4 or 5.0 bands in Win10, but since I've installed
Ubuntu it's been hopeless and I've tried just about every solution out
there. Granted, when I first got the laptop getting this chip to connect
to anything WiFi was pretty much a lost cause, and I know that the
driver for it has come a long way, but there are still several issues
with it that's really degrading the potential of the hardware.

Even on the 2.4ghz band, the only one I'm able to connect to I'm having
severe degradation of service and it sometimes won't even connect to the
access point and crashes nm-applet. Can someone please explain why it is
that it's showing only a 1Mb/s bit rate and why I'm unable to connect to
the 5ghz band on the router?

$ iwconfig
lo        no wireless extensions.

enp8s0    no wireless extensions.

wlp7s0    IEEE 802.11abgn  ESSID:"dd-wrt"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: E0:3F:49:9E:EF:72   
          Bit Rate=1 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=67/70  Signal level=-43 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:42   Missed beacon:0

Here is dmesg when I'm attempting to connect to the 5ghz band:

[  763.756142] cfg80211: World regulatory domain updated:
[  763.756145] cfg80211:  DFS Master region: unset
[  763.756147] cfg80211:   (start_freq - end_freq @ bandwidth), 
(max_antenna_gain, max_eirp), (dfs_cac_time)
[  763.756150] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 
mBm), (N/A)
[  763.756152] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 
mBm), (N/A)
[  763.756154] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 
mBm), (N/A)
[  763.756156] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz 
AUTO), (N/A, 2000 mBm), (N/A)
[  763.756159] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz 
AUTO), (N/A, 2000 mBm), (0 s)
[  763.756161] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 
mBm), (0 s)
[  763.756163] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 
mBm), (N/A)
[  763.756165] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 
mBm), (N/A)
[  789.188940] IPv6: ADDRCONF(NETDEV_UP): wlp7s0: link is not ready


Pardon spreading my frustration but I really don't like Windows and I really 
don't want to succumb to using it for this reason, if all else fails I may just 
try to replace the chip with a different one.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1520343

Title:
  Qualcomm Atheros wireless card [168c:003e] (rev 32) not supported

Status in linux-firmware package in Ubuntu:
  Confirmed

Bug description:
  ---------------------------------------------------------------

  STATUS 2016-03-17:

  ==========
  WARNING: You need at least kernel 4.5.0 for the following new fix to work, 
else refer to the old method described in post #22
  ==========

  The support for this card has now been merged to
  https://github.com/kvalo/ath10k-firmware. The repository now contains
  the required board.bin, board-2.bin and firmware-4.bin files for the
  card to initialize and connect to a bgn-access point (5GHz (ac-
  protocol) is still untested, feel free to modify this if you can
  confirm it works). Here are the new commands to get you online:

  sudo mkdir -p /lib/firmware/ath10k/QCA6174/hw3.0/

  sudo rm /lib/firmware/ath10k/QCA6174/hw3.0/* 2> /dev/null

  sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/board.bin
  https://github.com/kvalo/ath10k-
  firmware/blob/master/QCA6174/hw3.0/board.bin?raw=true

  sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/board-2.bin
  https://github.com/kvalo/ath10k-
  firmware/blob/master/QCA6174/hw3.0/board-2.bin?raw=true

  sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/firmware-4.bin
  https://github.com/kvalo/ath10k-
  
firmware/blob/master/QCA6174/hw3.0/firmware-4.bin_WLAN.RM.2.0-00180-QCARMSWPZ-1?raw=true

  Reboot or reload the ath10k_pci module and you should be able to
  connect!

  ---------------------------------------------------------------

  STATUS 2015-12-22:

  Currently there is a fix for this problem in post #22 (originally post
  #19, but reposted due to command typos!) which seems to have fixed the
  issue for many. This bug is unique to revision 32 of the card
  [168c:003e], fixes for older revisions don't seem to work.

  There are a couple of issues regarding the fix for some people (not
  all):

  1. Wireless works, but network throughput stops some time after
  connecting to access point

  2. Bluetooth communications take a noticeable performance hit when
  transferring something over WiFi

  ---------------------------------------------------------------

  Original description:

  I have recently installed Ubuntu 15.10 (64-bit) alongside Windows 10 on an 
Acer Aspire VN7-792G-76ZH and discovered, that the Qualcomm wireless card 
doesn't work in it or 16.04.
  The card has the device id 168c:003e as many other cards, for example the 
Qualcomm Atheros Killer 
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1383184), but it has a 
newer revision number (32) and the suggested fixes work only partially and the 
wireless is unusable.

  The computer has just been released this summer and is Intel Skylake
  -based.

  I've tried the patch from bug 1383184, which has a fix for the card revision 
20:
  Make the directory /lib/firmware/ath10k/QCA6174/hw3.0/ and put in the patch 
files:
  board.bin
  firmware-4.bin
  notice_ath10k_firmware-4.txt

  ath10k_pci succeeds in loading the firmware, but it seems that the
  firmware is not working correctly:

  dmesg | grep ath
  [    5.452683] ath10k_pci 0000:07:00.0: pci irq msi-x interrupts 8 irq_mode 0 
reset_mode 0
  [    5.678420] ath10k_pci 0000:07:00.0: Direct firmware load for 
ath10k/cal-pci-0000:07:00.0.bin failed with error -2
  [    5.678773] ath10k_pci 0000:07:00.0: Direct firmware load for 
ath10k/QCA6174/hw3.0/board-pci-168c:003e:11ad:0807.bin failed with error -2
  [    5.678781] ath10k_pci 0000:07:00.0: failed to load spec board file, 
falling back to generic: -2
  [    5.679445] ath10k_pci 0000:07:00.0: Direct firmware load for 
ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
  [    5.679453] ath10k_pci 0000:07:00.0: could not fetch firmware file 
'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
  [    7.802316] ath10k_pci 0000:07:00.0: qca6174 hw3.2 (0x05030000, 
0x00340aff, 168c:003e:11ad:0807 fallback) fw WLAN.RM.2.0-00180-QCARMSWPZ-1 api 
4 htt 3.26 wmi 4 cal otp max_sta 32
  [    7.802329] ath10k_pci 0000:07:00.0: debug 0 debugfs 1 tracing 1 dfs 0 
testmode 0
  [    8.200607] ath: EEPROM regdomain: 0x6c
  [    8.200614] ath: EEPROM indicates we should expect a direct regpair map
  [    8.200619] ath: Country alpha2 being used: 00
  [    8.200621] ath: Regpair used: 0x6c
  [    8.216605] ath10k_pci 0000:07:00.0 wlp7s0: renamed from wlan0
  [   13.462029] ath10k_pci 0000:07:00.0: failed to enable dynamic BW: -11
  [   16.461416] ath10k_pci 0000:07:00.0: could not suspend target (-11)
  [   24.760062] ath10k_pci 0000:07:00.0: failed to enable dynamic BW: -11
  [   27.759534] ath10k_pci 0000:07:00.0: could not suspend target (-11)
  [   36.046205] ath10k_pci 0000:07:00.0: failed to set arp ac override 
parameter: -11
  [   39.045729] ath10k_pci 0000:07:00.0: could not suspend target (-11)
  [   47.344304] ath10k_pci 0000:07:00.0: failed to enable dynamic BW: -11
  [   50.343794] ath10k_pci 0000:07:00.0: could not suspend target (-11)
  [   58.630534] ath10k_pci 0000:07:00.0: failed to enable dynamic BW: -11
  [   61.629936] ath10k_pci 0000:07:00.0: could not suspend target (-11)
  [   69.920624] ath10k_pci 0000:07:00.0: failed to enable dynamic BW: -11
  [   72.920132] ath10k_pci 0000:07:00.0: could not suspend target (-11)
  [   81.206812] ath10k_pci 0000:07:00.0: failed to enable dynamic BW: -11
  [   84.206218] ath10k_pci 0000:07:00.0: could not suspend target (-11)
  ...

  Then it just constantly prints the last two messages on and on.
  I can weirdly enough see the card in iwconfig:
  wlp7s0    IEEE 802.11abgn  ESSID:off/any
            Mode:Managed  Access Point: Not-Associated   Tx-Power=0 dBm
            Retry short limit:7   RTS thr:off   Fragment thr:off
            Power Management:off

  And I can see the wireless-icon in the toolbar, but scanning for
  access points or trying to connect to one doesn't work.

  This is the furthest I've gotten. I suspect this card needs a new
  firmware in ath10k?

  ---
  ApportVersion: 2.19.2-0ubuntu6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  dennis     1230 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=bed7757a-3749-4efb-9e9f-0ce8129bfbb9
  InstallationDate: Installed on 2015-11-11 (15 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 
(20151110)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 04f2:b520 Chicony Electronics Co., Ltd
   Bus 001 Device 002: ID 04ca:3016 Lite-On Technology Corp.
   Bus 001 Device 004: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card 
Reader Controller
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Acer Aspire VN7-792G
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-19-generic.efi.signed 
root=UUID=bdadfbdf-2233-46de-b804-c88712e6c518 ro ipv6.disable=1 
i915.preliminary_hw_support=1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-19-generic N/A
   linux-backports-modules-4.2.0-19-generic  N/A
   linux-firmware                            1.153
  Tags:  xenial
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 4.2.0-19-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm bumblebee cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 09/25/2015
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.02
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Aspire VN7-792G
  dmi.board.vendor: Acer
  dmi.board.version: V1.02
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.02
  dmi.modalias: 
dmi:bvnInsydeCorp.:bvrV1.02:bd09/25/2015:svnAcer:pnAspireVN7-792G:pvrV1.02:rvnAcer:rnAspireVN7-792G:rvrV1.02:cvnAcer:ct10:cvrV1.02:
  dmi.product.name: Aspire VN7-792G
  dmi.product.version: V1.02
  dmi.sys.vendor: Acer

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