Questions[atheros](ubuntu)

I am having a lot of problems with Wifi (wired connection don't have any issues). The strange thing is that happens only on my Ubuntu 18.04.4 x86_64 4.15.0-101-generic computer (I also tried to reinstall and put the 20.04 fresh, but nothing changed), all others have Windows/Android and are not affected.

What happens is that after a while browsing, I lose my internet connection, leaving the icon in the upper right corner with the question mark and getting "err_disconnected_internet", "dns_probe_finished_nxdomain" or "dns_probe_finished_no_internet" from Chrome. To "solve" I need to switch from the 2.4G network to the 5G network (and vice versa), but soon afterwards the problem occurs, often in less than 5 minutes (sometimes more, sometimes less).

I've tried several things, but all without success, I'll leave all of them here:

When viewing the dmseg -w command information, I saw that my country code (which is currently Brazil) was apparently changed to IE:

[1610.124972] wlp2s0: associated
[1610.125195] ath: EEPROM regdomain: 0x804c
[1610.125197] ath: EEPROM indicates we should expect a country code
[1610.125200] ath: doing EEPROM country-> regdmn map search
[1610.125202] ath: country maps to regdmn code: 0x3b
[1610.125205] ath: Country alpha2 being used: BR
[1610.125206] ath: Regpair used: 0x3b
[1610.125210] ath: regdomain 0x804c dynamically updated by country IE
[1610.159599] wlp2s0: Limiting TX power to 30 (30 - 0) dBm as advertised by ...

I tried to change in /etc/default/crda, but without success. Afterwards, I tried to disable powersave by changing /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf to "2", but also without success.

Note: even after the two changes above, the output of dmseg -w remains the same, but iwconfig really shows that powersave is disabled.

After that, I tried reinstall netwok-manager, use Google Public DNS, and nothing changed.

After erasing everything and placing 20.04, I thought I had solved the problem, but it come back shortly after.

I managed to get some logs just before the drop:

journalctl -u NetworkManager --follow

jun 08 00:38:26 lucius-Lenovo-ideapad-320 NetworkManager[742]: <info>  [1591587506.4061] dhcp6 (wlp2s0): state changed unknown -> bound
jun 08 00:38:29 lucius-Lenovo-ideapad-320 NetworkManager[742]: <info>  [1591587509.3816] manager: NetworkManager state is now CONNECTED_GLOBAL

journalctl --follow:

jun 08 00:39:00 lucius-Lenovo-ideapad-320 systemd[1]: Starting Clean php session files...
jun 08 00:39:00 lucius-Lenovo-ideapad-320 systemd[1]: phpsessionclean.service: Succeeded.
jun 08 00:39:00 lucius-Lenovo-ideapad-320 systemd[1]: Finished Clean php session files.
jun 08 00:39:01 lucius-Lenovo-ideapad-320 CRON[78496]: pam_unix(cron:session): session opened for user root by (uid=0)
jun 08 00:39:01 lucius-Lenovo-ideapad-320 CRON[78497]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then /usr/lib/php/sessionclean; fi)
jun 08 00:39:01 lucius-Lenovo-ideapad-320 CRON[78496]: pam_unix(cron:session): session closed for user root
jun 08 00:39:32 lucius-Lenovo-ideapad-320 systemd-resolved[700]: Using degraded feature set (UDP) for DNS server 2804:....
jun 08 00:39:33 lucius-Lenovo-ideapad-320 systemd-resolved[700]: Using degraded feature set (UDP) for DNS server 2804:....

Here's some outputs:

iwconfig:

lo        no wireless extensions.

docker0   no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:"NAME_5G"  
          Mode:Managed  Frequency:5.785 GHz  Access Point: ...   
          Bit Rate=6 Mb/s   Tx-Power=30 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=53/70  Signal level=-57 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:154   Missed beacon:0

virbr0    no wireless extensions.

enp1s0    no wireless extensions.

virbr0-nic  no wireless extensions.

lspci | grep -i wireless:

02:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter (rev 31)

/etc/network/interfaces:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

/etc/resolv.conf:

nameserver 127.0.0.53
options edns0
search spo.virtua.com.br

Please, I really don't know what else to do

EDIT

I forgot to mention something that may be very relevant:

Only on this particular network do I have drops, on any other I have no problems.

Router Info

HGJ310 HUMAX

Technology DOCSIS 3.1

Hardware Version 1.0

Software Version BRGCAI 1.0.18

EDIT 2

I don't know how much of a coincidence this is, but apparently accessing some specific sites makes the wifi go down faster, like some W3 Schools pages, giving me the following log:

Jun 08 02:09:24 lucius-Lenovo-ideapad-320 systemd-resolved [694]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP

With some research, I stopped that this is just an alert, and it didn't cause an error in itself...

I recently (re)installed Ubuntu 18.04 on my Razer Blade Pro (2017). My wireless card is performing extremely poorly, and frequently dropping connection. Inspecting dmesg for Atheros messages yields the following (nasty-looking) crash:

[ 6709.200017] ath10k_pci 0000:3c:00.0: firmware crashed! (guid 01e29e97-0ee6-4538-8756-764abe49705f)
[ 6709.200048] ath10k_pci 0000:3c:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 1a56:1535
[ 6709.200056] ath10k_pci 0000:3c:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
[ 6709.201666] ath10k_pci 0000:3c:00.0: firmware ver WLAN.RM.4.4.1-00079-QCARMSWPZ-1 api 6 features wowlan,ignore-otp crc32 fd869beb
[ 6709.202773] ath10k_pci 0000:3c:00.0: board_file api 2 bmi_id N/A crc32 20d869c3
[ 6709.202784] ath10k_pci 0000:3c:00.0: htt-ver 3.47 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
[ 6709.204809] ath10k_pci 0000:3c:00.0: firmware register dump:
[ 6709.204822] ath10k_pci 0000:3c:00.0: [00]: 0x05030000 0x000015B3 0x009E6FD4 0x00955B31
[ 6709.204830] ath10k_pci 0000:3c:00.0: [04]: 0x009E6FD4 0x00060730 0x0000001D 0x00473AD4
[ 6709.204838] ath10k_pci 0000:3c:00.0: [08]: 0x0049C59C 0x0044DEB4 0x004290B0 0x00449AB0
[ 6709.204847] ath10k_pci 0000:3c:00.0: [12]: 0x00000009 0xFFFFFFFF 0x00952F6C 0x00952F77
[ 6709.204854] ath10k_pci 0000:3c:00.0: [16]: 0x00952CC4 0x0091080D 0x00000000 0x0091080D
[ 6709.204862] ath10k_pci 0000:3c:00.0: [20]: 0x409E6FD4 0x0040E818 0x00405820 0x0049C464
[ 6709.204870] ath10k_pci 0000:3c:00.0: [24]: 0x809E9395 0x0040E878 0x0049C6E8 0xC09E6FD4
[ 6709.204879] ath10k_pci 0000:3c:00.0: [28]: 0x80932EF9 0x0040EA68 0x0040A054 0x00000009
[ 6709.204887] ath10k_pci 0000:3c:00.0: [32]: 0x809F8C46 0x0040EA98 0x0041201C 0x00000004
[ 6709.204894] ath10k_pci 0000:3c:00.0: [36]: 0x80911210 0x0040EAC8 0x00000005 0x004040F4
[ 6709.204902] ath10k_pci 0000:3c:00.0: [40]: 0x80911154 0x0040EB28 0x00400000 0x00000000
[ 6709.204910] ath10k_pci 0000:3c:00.0: [44]: 0x8091122D 0x0040EB48 0x00000000 0x00400600
[ 6709.204922] ath10k_pci 0000:3c:00.0: [48]: 0x40910024 0x0040EB78 0x0040AB98 0x0040AB98
[ 6709.204930] ath10k_pci 0000:3c:00.0: [52]: 0x00000000 0x0040EB98 0x009BB001 0x00040020
[ 6709.204938] ath10k_pci 0000:3c:00.0: [56]: 0x809EDA21 0x0040E938 0x00499F10 0x00000000
[ 6709.204944] ath10k_pci 0000:3c:00.0: Copy Engine register dump:
[ 6709.204967] ath10k_pci 0000:3c:00.0: [00]: 0x00034400  14  14   3   3
[ 6709.204990] ath10k_pci 0000:3c:00.0: [01]: 0x00034800  17  17 510 511
[ 6709.205012] ath10k_pci 0000:3c:00.0: [02]: 0x00034c00   5   5  68  69
[ 6709.205034] ath10k_pci 0000:3c:00.0: [03]: 0x00035000  27  27  29  27
[ 6709.205057] ath10k_pci 0000:3c:00.0: [04]: 0x00035400 131 131 131  67
[ 6709.205079] ath10k_pci 0000:3c:00.0: [05]: 0x00035800   0   0  64   0
[ 6709.205101] ath10k_pci 0000:3c:00.0: [06]: 0x00035c00  26  26  24  24
[ 6709.205123] ath10k_pci 0000:3c:00.0: [07]: 0x00036000   1   1   1   1
[ 6710.053042] ath10k_pci 0000:3c:00.0: Unknown eventid: 118809
[ 6710.056101] ath10k_pci 0000:3c:00.0: Unknown eventid: 90118
[ 6710.153420] ath10k_pci 0000:3c:00.0: device successfully recovered

There are also the following entries related to the wireless card:

[ 7403.617792] pcieport 0000:00:1c.6: AER: Corrected error received: id=00e6
[ 7403.617797] pcieport 0000:00:1c.6: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e6(Transmitter ID)
[ 7403.617800] pcieport 0000:00:1c.6:   device [8086:a116] error status/mask=00001000/00002000
[ 7403.617802] pcieport 0000:00:1c.6:    [12] Replay Timer Timeout 

The lspci output of the card is as follows:

3c:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)
    Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network Adapter
    Flags: bus master, fast devsel, latency 0, IRQ 145
    Memory at dc200000 (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

-[0000:00]-+-00.0  Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
           +- ...
           +-1c.0-[02-3a]--
           +-1c.4-[3b]----00.0  ...
           +-1c.6-[3c]----00.0  Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter
           +-1d.0-[3d]----00.0  ...
           +- ...

Loading the card (at boot) shows the following dmesg output:

[   29.432791] ath10k_pci 0000:3c:00.0: enabling device (0000 -> 0002)
[   29.433628] ath10k_pci 0000:3c:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0
[   29.721996] ath10k_pci 0000:3c:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:3c:00.0.bin failed with error -2
[   29.722023] ath10k_pci 0000:3c:00.0: Direct firmware load for ath10k/cal-pci-0000:3c:00.0.bin failed with error -2
[   29.725059] ath10k_pci 0000:3c:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 1a56:1535
[   29.725061] ath10k_pci 0000:3c:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
[   29.725481] ath10k_pci 0000:3c:00.0: firmware ver WLAN.RM.4.4.1-00079-QCARMSWPZ-1 api 6 features wowlan,ignore-otp crc32 fd869beb
[   29.791271] ath10k_pci 0000:3c:00.0: board_file api 2 bmi_id N/A crc32 20d869c3
[   30.386364] ath10k_pci 0000:3c:00.0: Unknown eventid: 118809
[   30.389342] ath10k_pci 0000:3c:00.0: Unknown eventid: 90118
[   30.389967] ath10k_pci 0000:3c:00.0: htt-ver 3.47 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
[   30.471606] ath: EEPROM regdomain: 0x6c
[   30.471606] ath: EEPROM indicates we should expect a direct regpair map
[   30.471607] ath: Country alpha2 being used: 00
[   30.471608] ath: Regpair used: 0x6c
[   30.475073] ath10k_pci 0000:3c:00.0 wlp60s0: renamed from wlan0
[   31.698248] ath10k_pci 0000:3c:00.0: Unknown eventid: 118809
[   31.701166] ath10k_pci 0000:3c:00.0: Unknown eventid: 90118

Notably, my system does not have hw3.2 under /lib/firmware/ath10k/QCA6174. I have version 1.173.1 of linux-firmware installed, and no proprietary drivers seem to be available for my wireless card. Mandatory AIO script results are available on Pastebin.

After a crash of my wireless card, I can generally restore connectivity by togging WiFi off and then back on in the GNONE menu, but this is annoying to do whenever my wireless crashes (which takes anywhere from a few minutes to a few hours from last crash to happen). This worked fine in 16.04 HWE before I had to uninstall Linux, so I'm not really certain why 18.04 would bring a whole new host of problems, but apparently they exist now.

I'm assuming this is a kernel-related bug (although I have yet to file a report on this), but I would like to know if there are any workarounds present to make my wireless connection last longer than ten minutes and/or stop the PCIe Bus Error messages from cluttering my syslog.

Short of replacing my wireless card, and waiting for an official fix, what can I do to improve wireless performance (and stop the crashes)?

After searching all through Google and Ask Ubuntu I couldn't find a fix to my problem: I have a Dell XPS 13 running Windows 10 and Ubuntu 16.04 with Dual-boot and my internet download speed works just fine but my upload speed is way slower than my speed on Windows, and honestly I can't get any work done that way.

Here are my Internet test results:

$ curl -s https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py | python -
Retrieving speedtest.net configuration...
Testing from Bezeq International (79.176.94.28)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Partner (Tel Aviv) [1.56 km]: 30.989 ms
Testing download speed................................................................................
Download: 33.93 Mbit/s
Testing upload speed................................................................................................
Upload: 0.15 Mbit/s

Results for: sudo lshw -C net:

$ sudo lshw -C net
[sudo] password for liorscha: 
  *-network               
       description: Wireless interface
       product: QCA6174 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:3a:00.0
       logical name: wlp58s0
       version: 32
       serial: 9c:b6:d0:e6:d5:79
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=4.13.0-38-generic firmware=WLAN.RM.4.4.1-00051-QCARMSWP-1 ip=10.0.0.15 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:286 memory:dc000000-dc1fffff

Results for iwlist wlan0 s:

wlan0     Interface doesn't support scanning.`

Results for lsmod | grep ath10:

ath10k_pci             45056  0
ath10k_core           352256  1 ath10k_pci
ath                    28672  1 ath10k_core
mac80211              782336  1 ath10k_core
cfg80211              614400  3 mac80211,ath,ath10k_core

These are the things I already tried:

1. sudo apt-get install --reinstall linux-firmware
2. Copying drivers from git repos to /lib/firmware/ath10k/QCA6174/*
3. Preferring IPV4 on IPV6
4. Encrypting with software instead of hardware

EDIT

This solved it for me.

I have a G73JW laptop using Ubuntu 12.04. It has an Atheros AR9285 card.

While wifi seems to work fine most of the time, about every hour or two it will loose the connection to the internet. The connection will appear to be connected still to the wireless router, but internet access is gone.

Disconnecting and reconnecting to the access point solves the problem, as does disabling and reenabling the adapter via the hardware keyboard shortcut.

How might this be solved so the connection is stable and doesn't drop?

EDIT: It looks like the network dropping isn't related to DNS as it fails either way:

codyloco@CodyLoco-Ubuntu:~$ dig askubuntu.com @8.8.8.8

; <<>> DiG 9.8.1-P1 <<>> askubuntu.com @8.8.8.8
;; global options: +cmd
;; connection timed out; no servers could be reached
codyloco@CodyLoco-Ubuntu:~$ dig askubuntu.com

; <<>> DiG 9.8.1-P1 <<>> askubuntu.com
;; global options: +cmd
;; connection timed out; no servers could be reached

Again cycling (disabling / enabling) the adapter corrects the issue.

I just upgraded to Ubuntu 12.04, and my wireless connection disconnects every 30 seconds. I am using an Asus Eee PC with an Atheros wireless card. I tried to find out how to solve this, so I gave up and rebooted my computer. Now the touchpad doesn't work. I tried to do a system restore, and it won't even start. The netbook goes straight to the login page. I'm going to have to switch to another Linux distro or use an older Ubuntu distro, because this is not working. I am not a skilled computer programmer, so I don't know what to do.