Related: https://askubuntu.com/questions/1058856/slow-wifi-ubuntu-18-04-with-intel-card CPU: i7-8750H GPU: GTX 1070 MAX-Q+8GB NIC: INTEL WI-FI 9560 AC+BT5 M.2 RAM: 32GB DDR4 Linux Kernel: 4.15 Many people are reporting that the adapters for Linux using Intel's M.2 Wireless Cards aren't properly routing packets at high speed anywhere near the reported capabilities. This is clearly a driver issue for Linux users such as myself and should kindly be addressed since so many of us out here want a fast laptop for research without the burden of Windows and the freedom on a *nix environment. If you'll offer me a clear set of instructions, I can offer a debug log that suites you needs without polluting the airspace now with anything currently unsolicited. I have read through https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging. Help me help you fix this. I get really pathetic speeds over my LAN between machines in my office laboratory and it's rather unfortunate if I may say so. I believe in your products and would like this matter resolved as soon as possible. I have to rely on a wired connection, which is unfavorable in general due to the nature of my work. Sincere thanks!
More problems identified here: https://askubuntu.com/questions/1049307/slow-wifi-with-ubuntu-18-04-and-intel-dual-band-wireless-ac-3168
Please share your dmesg output.
Created attachment 278239 [details] Kernel Log As requested, the log.
firmware-version: 34.0.0
In this log you didn't even initiate a connection. What I did see is that you use a firmware that is fairly old. Unfortunately, in order to be able to use a newer firmware you will need to upgrade your driver. This can be done by using our core releases. https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/core_release I suggest you take our master branch for the driver and the latest firmware.
Sorry, my bad. You did have a connection: [ 25.394348] wlo1: authenticate with b0:39:56:96:1a:90 [ 25.401066] wlo1: send auth to b0:39:56:96:1a:90 (try 1/3) [ 25.440807] wlo1: authenticated [ 25.444044] wlo1: associate with b0:39:56:96:1a:90 (try 1/3) [ 25.452261] wlo1: RX AssocResp from b0:39:56:96:1a:90 (capab=0x1431 status=0 aid=4) [ 25.453911] wlo1: associated [ 25.489520] IPv6: ADDRCONF(NETDEV_CHANGE): wlo1: link becomes ready All looks good from that perspective. Can you please run a few pings to your AP and see what happens? I'd like to check the latency. Also, please try to load iwlmvm with 'power_scheme=1'. In order to do that, add: options iwlmvm power_scheme=1 to /etc/modprobe.d/iwlwifi.conf Reboot, and let us know whether it feels better.
Speedtest.net speeds Wired: 113.59 Mbps Down / 11.51 Mbps Up Wireless: 2.79 Mbps Down / 7.42 Mbps Up @ 2.4 GHz 2.79 Mbps Down / 10.86 Mbps Up @ 5.0 Ghz :~$ sudo iwconfig enp3s0 no wireless extensions. wlo1 IEEE 802.11 ESSID:"_/|\_+AzatarA+_/|\_" Mode:Managed Frequency:5.805 GHz Access Point: B0:39:56:96:1A:92 Bit Rate=866.7 Mb/s Tx-Power=22 dBm Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on Link Quality=70/70 Signal level=-32 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:77 Missed beacon:0 ********************************************************************* Wireless: 3.55 Mbps Down / 11.33 Mbps Up @ 5.0 Ghz :~$ sudo iwconfig enp3s0 no wireless extensions. wlo1 IEEE 802.11 ESSID:"_/|\_+AzatarA+_/|\_" Mode:Managed Frequency:5.805 GHz Access Point: B0:39:56:96:1A:92 Bit Rate=866.7 Mb/s Tx-Power=22 dBm Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=70/70 Signal level=-23 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:78 Missed beacon:0
I see this inside iwlwifi.conf ... should I append or prepend your suggestion? remove iwlwifi \ (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \ && /sbin/modprobe -r mac80211 Also, is it wise to get the wifi driver per your earlier instructions?
After the config change barely 3.80 Mbps Down and still slower down than uploading. So, no dice. This is a 1Gbit card. It should cook with gas, my friend! :) There has to be something more to this that needs fixing.
(In reply to Mister Toszter from comment #8) > I see this inside iwlwifi.conf ... should I append or prepend your > suggestion? > > remove iwlwifi \ > (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs > /sbin/rmmod) \ > && /sbin/modprobe -r mac80211 > > > Also, is it wise to get the wifi driver per your earlier instructions? Yes.
(In reply to Emmanuel Grumbach from comment #5) > What I did see is that you use a firmware that is fairly old. Unfortunately, > in order to be able to use a newer firmware you will need to upgrade your > driver. > > This can be done by using our core releases. > > https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/core_release > > I suggest you take our master branch for the driver and the latest firmware. I did these steps: 1. Cloned https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/linux-firmware.git/ 2. Cloned https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git/ 3. Cloned https://w1.fi/cgit/hostap/ 4. Per the wiki, "For all the Core releases, the master branch hostap should be taken.". So I read through the README in the wpa_supplicant and looked at the examples but I am uncertain of which options to use in the config before building. https://w1.fi/cgit/hostap/tree/wpa_supplicant/README I attempted to compile the doxygen files in the docs folder, but a missing .png file prevented that possibility. Can you offer a little more guidance on how to execute your suggestion to take your master branch driver and latest firmware? I'm happy to follow along to the letter. I really want to avoid accidentally damaging my OS before I have had a chance to pull the NVMe drive and clone an image, but at the same time I have paid work that is painfully slow without a properly working wireless card. Thank you!
I see the latest firmware in the top level of the master branch is for either the 9000 [0] or 9260 [1] but not 9560... is this card not fully supported by these firmwares? If that is so, it's ok, though I wonder how long it will take for a proper 9560 fw release? [0] https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/linux-firmware.git/tree/iwlwifi-9000-pu-b0-jf-b0-38.ucode [1] https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/linux-firmware.git/tree/iwlwifi-9260-th-b0-jf-b0-38.ucode
9560 needs 9000 I think, just drop both files and let the driver pick the right firmware file.
Don't bother changing hostap, just install the new driver and the new firmware files.
Sorry, need to disambiguate here -- Driver is which file? I understand firmware and will do once I have total clarity. :)
The new driver is the backport tree which you compiled. It is not a file, but a tree that you compile and install. The firmware is the .ucode that you just need to copy to /lib/firwmare.
Ok, I am running `sudo make && make install` inside the backport-iwlwifi project and then copying the firmware as prescribed.
All good here? Was this a successful install in your mind's eye? I'm rebooting. If you don't get a note from me to confirm, it means my OS is hosed and I can't get back into my xcfe desktop. :P ``` :~/Engineering/wifi/backport-iwlwifi$ sudo make install Building modules, stage 2. MODPOST 6 modules INSTALL /home/azatar/Engineering/wifi/backport-iwlwifi/compat/compat.ko At main.c:160: - SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:74 - SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:81 sign-file: certs/signing_key.pem: No such file or directory INSTALL /home/azatar/Engineering/wifi/backport-iwlwifi/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko At main.c:160: - SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:74 - SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:81 sign-file: certs/signing_key.pem: No such file or directory INSTALL /home/azatar/Engineering/wifi/backport-iwlwifi/drivers/net/wireless/intel/iwlwifi/mvm/iwlmvm.ko At main.c:160: - SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:74 - SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:81 sign-file: certs/signing_key.pem: No such file or directory INSTALL /home/azatar/Engineering/wifi/backport-iwlwifi/drivers/net/wireless/intel/iwlwifi/xvt/iwlxvt.ko At main.c:160: - SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:74 - SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:81 sign-file: certs/signing_key.pem: No such file or directory INSTALL /home/azatar/Engineering/wifi/backport-iwlwifi/net/mac80211/mac80211.ko At main.c:160: - SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:74 - SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:81 sign-file: certs/signing_key.pem: No such file or directory INSTALL /home/azatar/Engineering/wifi/backport-iwlwifi/net/wireless/cfg80211.ko At main.c:160: - SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:74 - SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:81 sign-file: certs/signing_key.pem: No such file or directory DEPMOD 4.15.0-33-generic depmod will prefer updates/ over kernel/ -- OK! Note: You may or may not need to update your initramfs, you should if any of the modules installed are part of your initramfs. To add support for your distribution to do this automatically send a patch against "update-initramfs.sh". If your distribution does not require this send a patch with the '/usr/bin/lsb_release -i -s' ("Ubuntu") tag for your distribution to avoid this warning. Your backported driver modules should be installed now. Reboot. ```
Aummmm. The balance of the Universe is again restored. Speedtest.net speeds Wired: 95.97 Mbps Down / 11.51 Mbps Up Wireless: 114.53 Mbps Down / 11.44 Mbps Up @ 5.0 Ghz Will this ticket remain as a reference that I can freely distribute to others in the same situation as well as Ubuntu maintainers for the improvement of software drivers? Lastly, i really appreciate your support with this. Glad we got it sorted. :D
I'll close this ticket, but the URL will still be valid. Share it with whoever you want.
BTW, what can help us here, is to remove the new firmware (-38.ucode) and stay with with the original firmware (-34.ucode) and the new driver. If that still works nicely, then we know that we have a driver bug that has been fixed.
Yessir, confirmed by rm'ing the *38.ucode and replacing with *34.ucode --- Speed remains >100Mbps after reboot. The previous driver was infallibly the culprit of the communications caper. I'm switching back to *38.ucode just because. Thanks again.
All right. Then we should try to find the commit that fixed that and have it backported...
o.O Indeed. Let me know if I can be of assistance with that process.
If you could bisect the backport tree and find the commit that fixes the problem, that'd be awesome.
Oh man, I'd need to continuously build, install and test a machine running 18.04 through each commit. I admit I am too sppoked of Murphy and his silly Law. Because my lappy is working now, I'd be reluctant to do that on my machine... Any chance of a small budget to acquire a less important (and much less expensive) machine with an M.2 slot for NIC and I could be persuaded to test the 9000 series and any other NICs on that rig to help out. Before you note anything absurd about that request, just know it's worth mentioning because I am willing take it even further to help out across the broader scope of boards by testing multiple NICs against the codebase and return the machine and any equipment when all is said and done. :)
Forget it. We'll try to find the right commit. Thanks and enjoy!