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BaltazarGabka
n00b
Joined: 07 Dec 2021
Posts: 10
Location: Poland
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 Posted: Thu Dec 09, 2021 8:14 pm Post subject: Slow/unstable Wi-Fi |
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Hi,
I have a problem with slow/unstable Wi-Fi on Gentoo. Usually speed is about 1 - 2 Mbps, sometimes it gets higher, sometimes it drops to 0, but it doesn't disconnect. I've checked if it's a problem with my computer, or with router. Every other device I've checked works fine. My computer gets normal Wi-Fi speeds under Windows 8.1, I also tried some other Linux distros (Pop!_OS, EndeavourOS and Fedora - all LiveDVDs) and it works fine as well.
My Wi-Fi adapter is Atheros AR9485, I use NetworkManager, my kernel is 5.10.78-gentoo-dist (however this problem occurred some kernels ago...).
| Code: | ifconfig wlp3s0
wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.50.106 netmask 255.255.255.0 broadcast 192.168.50.255
inet6 fe80::6c22:59e1:8fa8:8eb1 prefixlen 64 scopeid 0x20<link>
ether 24:0a:64:91:9f:79 txqueuelen 1000 (Ethernet)
RX packets 1119426 bytes 1563764542 (1.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 499039 bytes 71181851 (67.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
| Code: | iwconfig wlp3s0
wlp3s0 IEEE 802.11 ESSID:"***** ***"
Mode:Managed Frequency:2.442 GHz Access Point: ***** ***
Bit Rate=57.8 Mb/s Tx-Power=15 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:23104 Missed beacon:0 |
| Code: | lsmod | grep ath
ath9k 139264 0
ath9k_common 24576 1 ath9k
ath3k 24576 0
ath9k_hw 466944 2 ath9k_common,ath9k
bluetooth 581632 46 btrtl,btintel,btbcm,bnep,ath3k,btusb,rfcomm
mac80211 925696 1 ath9k
ath 32768 3 ath9k_common,ath9k,ath9k_hw
cfg80211 774144 4 ath9k_common,ath9k,ath,mac80211 |
The only difference I see between Gentoo and Pop!_OS, EndeavourOS and Fedora is the number of "Invalid misc" (iwconfig) - in Gentoo it's much higher. I tried some solutions found on this forum and somewhere else, and they didn't work (like nohwcrypt=1). I also tried to connect to Wi-Fi using wpa_supplicant and there was no difference (doesn't NetworkManager use wpa_supplicant?). Now I don't know what to look for, and where might be the problem. Maybe there are some options missing in the kernel, but i thought that gentoo-dist kernel uses Fedora's config, so if there's something wrong, Fedora should behave the same, but it's fine.
I'd appreciate any help. |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3879
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| Posted: Thu Dec 09, 2021 8:30 pm Post subject: |
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Do you have
linux-firmware
emerged?
_________________
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BaltazarGabka
n00b
Joined: 07 Dec 2021
Posts: 10
Location: Poland
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| Posted: Thu Dec 09, 2021 9:07 pm Post subject: |
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| alamahant wrote: | Do you have
linux-firmware
emerged? |
Yes, I have it emerged. I assume, that I wouldn't be able to load ath9k module without this package.
| Code: | emerge --search linux-firmware
* sys-kernel/linux-firmware
Latest version available: 20211027
Latest version installed: 20211027
Size of files: 179 045 KiB
Homepage: https://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git
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Jaglover
Watchman
Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3879
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| Posted: Thu Dec 09, 2021 10:58 pm Post subject: |
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Plz Disable wpa_supplicant and/or iwd and any net.<wifi> service and just let NM handle wifi.
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BaltazarGabka
n00b
Joined: 07 Dec 2021
Posts: 10
Location: Poland
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| Posted: Fri Dec 10, 2021 4:00 pm Post subject: |
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| Jaglover wrote: | | What driver wpa_supplicant is using? |
wpa_supplicant uses nl80211, wext didn't work at all.
| alamahant wrote: | | Plz Disable wpa_supplicant and/or iwd and any net.<wifi> service and just let NM handle wifi. |
Actually the only enabled service responsible for managing networks is NetworkManager. Anything else is disabled. |
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Jaglover
Watchman
Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana
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BaltazarGabka
n00b
Joined: 07 Dec 2021
Posts: 10
Location: Poland
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| Posted: Fri Dec 10, 2021 6:33 pm Post subject: |
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| Jaglover wrote: | | Anything in kernel log? |
Do you mean something specific?
This part is the same on all four LInux distributions I tried (Gentoo, Pop!_OS, EndeavourOS, Fedora):
| Code: | dmesg | grep ath
[ 5.973787] usbcore: registered new interface driver ath3k
[ 5.991480] ath: phy0: Disable PLL PowerSave
[ 5.999197] ath: phy0: ASPM enabled: 0x42
[ 5.999202] ath: EEPROM regdomain: 0x60
[ 5.999203] ath: EEPROM indicates we should expect a direct regpair map
[ 5.999206] ath: Country alpha2 being used: 00
[ 5.999208] ath: Regpair used: 0x60
[ 6.025356] ath9k 0000:03:00.0 wlp3s0: renamed from wlan0
[ 30.484924] ath: EEPROM regdomain: 0x80fa
[ 30.484925] ath: EEPROM indicates we should expect a country code
[ 30.484926] ath: doing EEPROM country->regdmn map search
[ 30.484927] ath: country maps to regdmn code: 0x37
[ 30.484929] ath: Country alpha2 being used: FR
[ 30.484929] ath: Regpair used: 0x37
[ 30.484931] ath: regdomain 0x80fa dynamically updated by country element |
| Code: | dmesg | grep wlp3s0
[ 6.025356] ath9k 0000:03:00.0 wlp3s0: renamed from wlan0
[ 30.454136] wlp3s0: authenticate with ***** ***
[ 30.473412] wlp3s0: send auth to ***** *** (try 1/3)
[ 30.475316] wlp3s0: authenticated
[ 30.478134] wlp3s0: associate with ***** *** (try 1/3)
[ 30.484642] wlp3s0: RX AssocResp from ***** *** (capab=0xc11 status=0 aid=1)
[ 30.484819] wlp3s0: associated
[ 30.600893] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready |
For me nothing out of ordinary... |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54216
Location: 56N 3W
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| Posted: Fri Dec 10, 2021 7:14 pm Post subject: |
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BaltazarGabka,
| Code: | | [ 30.484929] ath: Country alpha2 being used: FR |
This is used to determine which WiFi operating parameters are permitted in your region.
Did the crda database load?
Check dmesg, there will be an error if it failed.
Are you using the correct country code for your region?
You may be restricting your Transmit power and permitted channels if not.
WiFi will often work but badly if that setup is not correct.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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BaltazarGabka
n00b
Joined: 07 Dec 2021
Posts: 10
Location: Poland
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| Posted: Sat Dec 11, 2021 8:43 pm Post subject: |
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| NeddySeagoon wrote: | BaltazarGabka,
| Code: | | [ 30.484929] ath: Country alpha2 being used: FR |
This is used to determine which WiFi operating parameters are permitted in your region.
Did the crda database load?
Check dmesg, there will be an error if it failed.
Are you using the correct country code for your region?
You may be restricting your Transmit power and permitted channels if not.
WiFi will often work but badly if that setup is not correct. |
I checked dmesg, and there aren't any errors. Other Linux distros I've tested used the same regulatory domain and Wi-Fi worked fine. I tried to change it, bu it didn't help.
When I installed Gentoo Wi-Fi also worked fine, but it changed probably after some update. Unfortunately I don't remember when it happened, so now it's more difficult to find where might be the problem. I thought that some interferences from other networks may cause my Wi-Fi to work so slowly and unstable, but after making some tests I found out, that there must be a problem in my Gentoo system... |
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BaltazarGabka
n00b
Joined: 07 Dec 2021
Posts: 10
Location: Poland
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| Posted: Sun Jan 09, 2022 8:11 pm Post subject: |
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| I haven't found a solution yet, but I've found some strange behavior: when I suspend my computer, and then I resume it, Wi-Fi works fine, it gets normal speeds. I don't see any difference in dmesg, only iwconfig shows lower "Invalid misc". Can anybody tell me where can I look for a reason of that behavior? |
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