[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I have this bug too. wlp1s0IEEE 802.11 Mode:Managed Frequency:2.412 GHz Access Point: 54:89:98:2C:B6:05 Bit Rate=1 Mb/s Tx-Power=20 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=49/70

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I also can confirm this bug is still present in Ubuntu 20.04, speed cap at 1 Mb/s -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32)

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Can confirm that this bug still exists in groovy. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I also confirm this bug on Focal. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To manage

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Can confirm. Still present here on Ubuntu Focal, too. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

this bug is still not solved in 20.04 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To manage

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Is there anything a Ubuntu 18.04 user (upgraded from the preinstalled Dell XPS Ubuntu 16.04) can do without manually replacing kernels and possibly compromising laptop bootability? This is what I'm currently running: $ uname -a Linux dell-desktop 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

** Tags added: cscc -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To manage notifications about this

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

** Changed in: linux (Ubuntu Bionic) Status: In Progress => Confirmed ** Changed in: linux (Ubuntu) Status: In Progress => Confirmed ** Changed in: linux (Ubuntu Bionic) Assignee: Joseph Salisbury (jsalisbury) => (unassigned) ** Changed in: linux (Ubuntu Artful)

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I believe this issue has been fixed in newer kernel. I have a TP-LINK TL-WDN4800 (168c:0030)，the download speed of it looks normal, but the upload speed has never been higher than 30Mbps on my ArchLinux with linux kernel 4.14 LTS. Then I switched to kernel 4.17, and iperf3 shows a 124 Mbits/sec

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Joseph, Yes, your kernel does resolve this bug. Measuring using speedtest.net, before your kernel, using the current Bionic kernel, I get 8.64mbps on a 2.4Ghz network, with a max of around 10Mbs. Four minutes later, with your kernel, 34.92Mbs with a max of around 50Mbs. What is perhaps not so

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Yes, confirmed. It's the patch: 109.12Mbs on 5GHz with the stock kernel. I guess the patch needs to take note of possible throughput too. I've only looked at download speed in all these tests. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I built a Bionic test kernel with commits 36148c2bbfbe and c9f1f58dc2eb. Commit 3a9b76fd0db9 is not needed in Bionic, since it is 3.15 based. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1670041/bionic Can you test this kernel and see if it resolves this bug?

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

** Also affects: linux (Ubuntu Bionic) Importance: Medium Assignee: Joseph Salisbury (jsalisbury) Status: In Progress ** Also affects: linux (Ubuntu Artful) Importance: Undecided Status: New ** No longer affects: linux (Ubuntu Zesty) ** Changed in: linux (Ubuntu Artful)

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

And original commit adding the infrastructure linked to this thread ;) https://git.kernel.org/pub/scm/linux/kernel/git/davem/net- next.git/commit/?id=3a9b76fd0db9f0d426533f96a68a62a58753a51e Then the official helper was added in https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

The low throughput with transmit TCP streams on ath10k should be fixed with this mac80211 commit: mac80211: Adjust TSQ pacing shift https://git.kernel.org/linus/36148c2bbfbe50c50206b6f61d072203c80161e0 Apparently v4.16-rc5 was the first release to have that commit. -- You received this bug

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I encountered this issue while trying to stream from a Tobii Pro Glasses 2, i.e. ~5Mbit/sec streaming, UDP or TCP recv would freeze for 3-10 seconds once every 30 to 100 seconds. Sometimes recv would block for over 5 seconds before returning with a packet send by the host. I used a python script

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

So, going back to question in #60, the Dell link just says to get the latest stuff from kvalo's firmware repo. If you are on 17.10 like myself then you already have it and it doesn't help with the original problem: ➜ ~ apt policy linux-firmware linux-firmware: Installed: 1.169 Candidate:

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

There's also Intel 9260 coming up (wave 2): https://wikidevi.com/wiki/Intel_Dual_Band_Wireless-AC_9260_(9260NGW) Judging by this https://communities.intel.com/message/506847#506847 it's only available for OEMs as of now so maybe those will go into circulation soon for regular folks. Meanwhile,

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

FWIW, I replaced the Atheros card with Intel 8265, which I bought for $20 on amazon (https://www.amazon.com/gp/product/B0721MLM8B) and haven't had any problems since. iperf results are way more stable than with Atheros. I suggest everyone to do the same thing. -- You received this bug

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

The disconnecting problem is not the same as this issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Hello s.illes79; I tried to install the recommendations from Dell, I think it works for me... uname -r 4.4.0-96-generic dpkg -l linux-firmware | grep ii ii linux-firmware 1.157.13 all Firmware for Linux kernel drivers lspci -vvv 02:00.0 Network controller: Qualcomm Atheros

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Using this guide https://www.dell.com/support/article/ng/en/ngdhs1/sln306440/killer-n1535 -wireless-firmware-manual-update-guide-for-ubuntu-systems?lang=en and upgrading to latest firmware for Dell XPS 15 on Ubuntu 17.10 for the following below solved my wifi frequent connection drop while

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I tried that in comment #58. It's already in linux-firmware.git. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

anyone tried this from dell.com? https://www.dell.com/support/article/uk/en/ukbsdt1/sln306440/killer-n1535-wireless-firmware-manual-update-guide-for-ubuntu-systems?lang=en -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Using ubuntu 17.10, kernel 4.13-0.15-generic on XPS 13 9360 QCA6174 rev 32. Connection on 5Ghz band AC Freebox router. Had the same problem, however browser speedtest [1] worked fine, except that any upload on nfs or cifs were from 0 to max 1MB/s with system freeze when uploading big files.

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

The number from iperf3 does show big difference between Windows 10 and Linux. Use speedtest.net to measure the speed, the gap is mainly on the upload speed. Ubuntu w/ Linux v4.14-rc4, latest linux-firmware.git, cubic [1]: Ping: 5 ms Download: 82.29 Mbps Upload: 59.94 Mbps bbr [2]: Ping: 4 ms

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

4.13 without modifications: http://paste.ubuntu.com/25499163/ scp (cubic) ➜ /tmp scp testfile srv:/tmp testfile

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

This is with cubic: limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 6); min 123.00 max 220.00 avg 194.81 num 80 and reno: limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 6); min 129.00 max 224.00 avg 192.71 num 80 I suspect that iperf/iperf3 might not be a good

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Eric, Once again, thanks for looking into this, and sorry for being slow. Here are the results for 4.13-rc3 kernel using BBR congestion control: kir@kd:~/wifiperf/4.13-rc3/2$ cat results limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 10); min 7.64 max 17.30 avg 13.92 num 40

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Disabling Powersave in NetworkManager did it for me. I was barely getting 300kB/s on certain workloads on my 2.4GHz network whereas I could get full speed on my 5GHz one. By disabling the power management in NetworkManager, I got full speed all the time and I haven't really noticed any decrease in

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Eric, I should have tried cubic in the previous (#46) test - quite an interesting result: http://paste.ubuntu.com/25200234/ (6 tests cubic & bbr) lspci | grep QCA 3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) With cubic cwnd grows quite quickly

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2,8 cubic iperf3 -c dest Connecting to host dest, port 5201 [ 4] local src port 49522 connected to dest port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4] 0.00-1.00 sec 6.17 MBytes 51.7 Mbits/sec6 91.9 KBytes [ 4] 1.00-2.00 sec 8.34 MBytes 70.0

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

4.13-rc2 + tcp_output.c - limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 10); + limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 7); w/ cubic % iperf3 -c dest Connecting to host dest, port 5201 [ 4] local src port 47742 connected to dest port 5201 [ ID] Interval

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Sorry if I was not clear, but I would like to combine #42 and #44 experiments. Ie making sure that even with BBR on linux-4.3-rc1/rc2 (without FQ packet qdisc), we can simply tweak TCP Small queue threshold as #42 results would suggest to resolve this bug. Thanks ! -- You received this bug

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Eric, the UDP measurement was to provide a rough estimate of what the AP is capable of sustaining without congestion control and flow control. I did not have a different card at hand, but right now I can provide a similar measurement for comparison with the problematic card: $ lspci | grep Wire

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Hi Eric, This compares Cubic with BBR with 4.13-rc2 (which has a few new commits to bbr.c): wlan0: mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000 $ cat /proc/sys/net/ipv4/tcp_congestion_control cubic $ iperf3 -c Connecting to host , port 5201

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Please do not compare UDP and TCP, this is absolutely useless. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Likewise, on a non-congested network (802.11ac), directly from the laptop to the AP: uname -r 4.13.0-rc1 ➜ linux git:(5771a8c08880) ✗ cat /proc/sys/net/ipv4/tcp_congestion_control bbr ➜ linux git:(5771a8c08880) ✗ iperf3 -u -b 1000M -c rtr Connecting to host rtr, port 5201 [ 4] local

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I've built a 4.13-rc1 (5771a8c08880) kernel and have done some laptop (4.13, bbr) <-> AP <-> laptop (4.4 cubic) tests. Not sure about the AP and there is a fair amount of wireless devices on the network I was connected to. Most of them have Cubic congestion control but I am not sure how fair they

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Kirill, would it be possible to run again your experiments, but using bbr congestion control ? Note that you should use 4.13-rc1 so that following commit is included : commit 218af599fa635b107cfe10acf3249c4dfe5e4123 ("tcp: internal implementation for pacing") lpaa5:~# modprobe tcp_bbr

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Thanks to all of you for the tests, sorry for the delay, I have been on vacation last week. Yes, the plan is to permanently change TCP stack, since TCP Small queue being very aggressive is no longer needed when FQ packet scheduler or BBR congestion module is used for TCP. -- You received this

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Eric, thank you for looking at it! I have measured all four variants that you have suggested, as well as the default ones, using linux-4.12.1 as a base. The summary of measurements is below. Note that - min/max/avg is in Mbits/sec; - n is number of measurements, each of 1 second. + limit

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

4.12 + the first change from https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/33 + 802.11ac network => looks better. ➜ linux git:(6f7da290413b) ✗ git --no-pager diff diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 4858e190f6ac..abcfecfb8bbe 100644 ---

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I noticed strange behavior. iperf still get 20-30Mbps, but wget have 5-9MBps. kernel 4.12 without any paths $ wget http://cdimage.ubuntu.com/daily-live/current/artful-desktop-amd64.iso --2017-07-12 19:17:23-- http://cdimage.ubuntu.com/daily-live/current/artful-desktop-amd64.iso Resolving

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

FYI, I'm using an XPS 15 9560, from this page: https://wiki.archlinux.org/index.php/Dell_XPS_13_(9360)#Wireless It says: "The Killer 1535 Wirless Adapter is functional and the ath10k firmware is included in recent linux kernel versions. The connection speed reported by iw is limited to

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Eric, Is this patch the basis for a more permanent and general fix (it seems not specific to ath10k)? Thanks! The patch produces a marked improvement with TCP from the local QCA6174 client to AP/remote. 4.12.0 (UDP; no patch) % iperf3 -u -b 1000M -c remote Connecting to host remote, port 5201

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Tested with http://kernel.ubuntu.com/~jsalisbury/lp1670041/ on a 2.4 GHz network. iperf3: interrupt - the client has terminated ➜ ~ uname -r 4.10.0-26-generic # UDP ➜ ~ iperf3 -u -b 1000M -c Connecting to host , port 5201 [ 4] local 172.29.10.20 port 37973 connected to port 5201 [ ID]

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Eric, I will try to test it on Monday as I have a pretty slow uplink where I am currently. Hopefully, I will get back to my 5 GHz network on Thursday to do a proper comparison with the data I had before. Thanks a lot for the feedback and suggestions - really appreciate it! -- You received

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

For those who want to test it, I built a test kernel with the patch posted in comment #31. It can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1670041/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Yesterday something went wrong o_O I recheck "limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 8);" to. limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 8); (4.10.0-26) [ 3] 0.0-10.0 sec 83.6 MBytes 70.1 Mbits/sec limit

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Thanks, can you now try : limit = max(4 * skb->truesize, sk->sk_pacing_rate >> 8); Then : limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 7); Then : limit = max(4 * skb->truesize, sk->sk_pacing_rate >> 7); -- You received this bug notification because you are a member of Ubuntu

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

edumazet, i try out your path. 4.10.0-26 with path: Client connecting to 192.168.1.1, TCP port 5001 TCP window size: 85.0 KByte (default) [ 3] local 192.168.1.169 port 39356

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

skb_orphan() is not the way to go. Can someone try the following patch ? diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 4e985dea1dd24fdecfbf9b47d51cff698e97cd2f..5f394f2f524f6ac8d8d9bef50a1bfc99397d6724 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -2158,7

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

acelankao, In 1692836 the same hack mentioned by Kalle was applied. I am not sure it is a proper fix though as it has not landed upstream: http://elixir.free- electrons.com/linux/latest/source/drivers/net/wireless/ath/ath10k/mac.c#L4181 -- You received this bug notification because you are a

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Should be the same as bug 1692836 , and there should be a fix in kernel 4.4.0-83.106 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Also confirmed this bug on Dell XPS 15 (9560) with gnome ubuntu 17.04 and 4.10/4.12 kernels. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174

Re: [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Dell XPS owner, I would also suggest you hassle Dell.. selling a laptop with Ubuntu installed, where one of the devices doesn't even work properly is a bit of a d1ck move. I've reported the issue with them which they promised would be relayed to their hw team. More reports can't hurt! Not that it

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I also suffer from the same bug on dell xps 13 9360, tcp wi-fi is 5-10x slower than on other devices. @kalle we understand the patch you refer to is just a workaround, not a solution. Is anyone working on a real fix? -- You received this bug notification because you are a member of Ubuntu Bugs,

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

@kalle valeo, your patch appears to resolve this bug, but it still exists in mainline. Do you have plans to submit this patch upstream? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title:

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I have the same problemi with dell XPS 13 9360. Here the wifi info (https://github.com/UbuntuForums/wireless-info/raw/master/wireless-info) results, hope they are useful: http://paste.ubuntu.com/24848753/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I see the same behavior as mikewiz38: via a webtest 104 Mbps download and in the graphical interface it lists as 6Mbps. So speed is not bad - it just looks bad (on 16.04.1 with hwe kernel 4.8.0-53) -- You received this bug notification because you are a member of Ubuntu Bugs, which is

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Same here, #21. I have the same poor performance on 4.12-rc4. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Joseph, No luck on 4.12.0-041200rc4-generic, unfortunately: https://paste.ubuntu.com/24826561/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I'm having the same problem. Using Dell XPS13 9360. I'm a developer but doesn't know about kernel or modules. But any kind of test, I can try to help if I have some instruction how to do it. I really like to have this problem solved. cd@cd-XPS-13-9360:~$ uname -a Linux

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

It doesn't look like the specific patch posted in #11 ever made it into mainline. Can you test the v4.12-rc4 kernel to see if the bug was fixed in a different way? It can be downloaded from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12-rc4 -- You received this bug notification because

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

** Description changed: + Update (2017-05-20): + Kalle Valo suggested a hack which increased client -> AP TCP performance - so it does not look like a firmware issue as I thought originally, rather an ath10k driver issue: +

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Just adding that I have the same problem on a Dell XPS13 9630 with the same wifi card. Interesting though that iperf will show poor performance (10Mbit/s) but web based speedtest pages show 150Mbps. Windows will also show about 100Mbit/s with iperf running while Ubuntu will show just 10Mbit/s.

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Tested the patched kernel - the results are consistent now across laptop -> server, server -> laptop tests for both TCP and UDP. ➜ ~ uname -a Linux blade 4.10.0-20-generic #22~lp1670041 SMP Fri May 5 18:23:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux 4 tests: 1) laptop -> server via AP (TCP); 2)

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Hi, just a quick update: I have not forgotten about trying out the new kernel. I am currently geographically far away from the access point that I used for testing and it is hard to find 802.11ac Wi-Fi in the wild. I will provide the test results once I get to the right environment. -- You

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Thanks Joseph! I will try it out. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To manage

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I built a Zesty test kernel with the patch posted in comment 11. The test kernel can be downloaded from: http://kernel.ubuntu.com/~jsalisbury/lp1670041/ Note, with this test kernel you need to install both the linux-image and linux-image-extra .deb packages. -- You received this bug

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

** Also affects: linux (Ubuntu Zesty) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Zesty) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Zesty) Status: New => In Progress ** Changed in: linux (Ubuntu Zesty) Assignee: (unassigned) =>

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

** Changed in: linux (Ubuntu) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Kalle, The chip firmware was a guess based upon somebody else's feedback: http://lists.infradead.org/pipermail/ath10k/2016-January/006714.html It might not be true at all and I have done some investigation after creating this bug report a month ago. My notes from back then: - iperf tcp vs udp

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

My observations are mostly just significantly lower signal strength than another laptop I have with intel wireless during side by side test. I'm receiving an intel AC 8265 (Model 8265NGW) in the coming days to do a comparison in the same chassis for a fair test (in case of antenna performance

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I'm having a hard time understanding this bug report, so I have some extra questions: Is the 27.3 Mbit/s throughput transmit (laptop -> AP) or receive (AP -> laptop) speed? That's an important detail to know. Also I see claims that this is a firmware problem, how was that conclusion made? If

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Thank AceLan, I gave it a try, but it seems that those files are the same or older than the ones available on github.com/kvalo/ath10k- firmware/tree/master/QCA6174 and the poor performance remains. I also found a bug from 2015

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

KalleValo, I added you in the hopes for some insight. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1670041 Title: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535) To

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Try to get the firmware from the linux-firmware git tree git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git copy the firmwares in ath10k/QCA6174/hw3.0/ to /lib/firmware/ It should help. -- You received this bug notification because you are a member of Ubuntu Bugs, which

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

I'm also experience abysmal Wi-Fi performance with QCA6174 on a new Lenovo Yoga 910 - dropping connection every few minutes, reporting very low network strength coverage. Out of the box, the card didn't work at all with neither Ubuntu Xenial LTS nor elementaryOS 0.4 Loki, but I got it running

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

dima@blade:~$ uname -r 4.11.0-041100rc1-generic dima@blade:~$ dpkg -l linux-firmware Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.11 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Confirmed *NFA364xp.bin and qca61x4_2_2.bin usage by Windows. linux- firmware's version is definitely not up-to-date for this card as it refers to NFA324i (see the paste link). ** Attachment added: ".inf file parsed by Windows"

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

** Description changed: - I experience a very poor 802.11ac performance of a QCA6174 Wireless card - (Killer Wireless 1535). + Update: added some forensics in the paste (a long read): + http://paste.ubuntu.com/24118478/ + + TL;DR with a bit of intuition: + We need a new firmware-5.bin from

[Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

Just to rule out the case of bad compatibility between the STA on the router (Quantenna QSR1000 chipset, QT3840BC SoC in case of my RT-87U) and the client WNIC I also checked with a different STA. So the second router's 802.11ac hardware is Compex_WLE900VX Qualcomm Atheros QCA9880 (V2) which uses