Metzli
August 27, 2021, 3:56am
#1
Hello!
I’m new.
I’ve got a dual boot setup on my machine (Win 10 / OpenSUSE LEAP 15.3 w/Gnome Desktop) and I’ve been having some problems with my Intel Wireless NIC (Wireless-AC 8260)
I use Firefox on both operating systems, but browser related tasks generally feel less responsive in OpenSUSE. When performing a speedtest (litespeedtest.com ) OpenSUSE consistently gets much slower speeds than when I reboot into Windows and perform the same speed test.
I’m wondering if this is a MIMO issue because the speed is roughly half of what it is on Windows (60 vs. 35 Mbps).
I’ve done a little reading and here are some things I’ve tried so far
Verified that my wi-fi router is set to WPA/AES.
Verified the router is set to WMM
created /etc/modprobe.d/iwlwifi.conf and tried various combinations of these settings:
11n_disabled=0
11n_disabled=1
11n_disabled=8
bt_coex_active=0
swcrypto=1
[/LIST]
The existence of the iwlwifi.conf file does not appear to make any difference in performance. It would be nice to verify its even loading the contents of the file, but I don’t even know how to determine which driver is currently in use.
And speaking of drivers, I did see Intel has some available (https://www.intel.com/content/www/us/en/support/articles/000005511/wireless.html ), but their instructions say to copy the files into /lib/firmware which is filled with .xz files (no idea how to turn that tar.gz into a .xz).
Any guidance appreciated, and if you need me to post some output let me know, I’m still learning bash.
Metzli:
Hello!
I’m new.
Welcome to openSUSE Forums!
The existence of the iwlwifi.conf file does not appear to make any difference in performance. It would be nice to verify its even loading the contents of the file, but I don’t even know how to determine which driver is currently in use.
That’s easy enough. Check the driver loaded with…
/usr/sbin/hwinfo --wlan
The loaded module parameters can be verified with systool eg for the iwlwifi driver…
sudo systool -vm iwlwifi
Metzli
August 27, 2021, 9:18pm
#3
[HR][/HR]Thanks for the cmd info.
I determined that the iwlwifi config file was not loading due to an incorrect format.
After fixing it, it appears 11n_disable=1 helps, but not enough to account for the 2x discrepancy.
The output of hwifno output:
06: PCI 100.0: 0282 WLAN controller
[Created at pci.386]
Unique ID: y9sn.5U5jxg3LUR0
Parent ID: z8Q3.+HmMOUBwHD7
SysFS ID: /devices/pci0000:00/0000:00:1c.0/0000:01:00.0
SysFS BusID: 0000:01:00.0
Hardware Class: network
Model: "Intel Dual Band Wireless-AC 8260"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x24f3 "Wireless 8260"
SubVendor: pci 0x8086 "Intel Corporation"
SubDevice: pci 0x1010 "Dual Band Wireless-AC 8260"
Revision: 0x3a
Driver: "iwlwifi"
Driver Modules: "iwlwifi"
Device File: wlan0
Features: WLAN
Memory Range: 0xdf000000-0xdf001fff (rw,non-prefetchable)
IRQ: 126 (no events)
HW Address: a4:34:d9:81:06:b4
Permanent HW Address: a4:34:d9:81:06:b4
Link detected: yes
WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 12 13 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140
WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457 2.462 2.467 2.472 5.18 5.2 5.22 5.24 5.26 5.28 5.3 5.32 5.5 5.52 5.54 5.56 5.58 5.6 5.62 5.64 5.66 5.68 5.7
WLAN encryption modes: WEP40 WEP104 TKIP CCMP
WLAN authentication modes: open sharedkey wpa-psk wpa-eap
Module Alias: "pci:v00008086d000024F3sv00008086sd00001010bc02sc80i00"
Driver Info #0:
Driver Status: iwlwifi is active
Driver Activation Cmd: "modprobe iwlwifi"
Config Status: cfg=no, avail=yes, need=no, active=unknown
Attached to: #3 (PCI bridge)
marel
August 27, 2021, 10:08pm
#4
Please share the output of “sudo iwconfig”
That will list give you the name of your wireless iterface with details.
> sudo iw dev wlp0s20u14 link
Connected to 00:a9:5f:3d:5a:ba (on wlp0s20u14)
SSID: Abajo
freq: 2412
RX: 4705848 bytes (46368 packets)
TX: 44907 bytes (1590 packets)
signal: -63 dBm
rx bitrate: 1.0 MBit/s
tx bitrate: 1.0 MBit/s
bss flags: short-preamble short-slot-time
dtim period: 2
beacon int: 100
Then try to get the same stats from Windows and compare.
NB: My tx/rx bitrate is very low because there is one concrete wall, one wooden door and about 30 meters of distance.
Metzli:
[HR][/HR]Thanks for the cmd info.
I determined that the iwlwifi config file was not loading due to an incorrect format.
After fixing it, it appears 11n_disable=1 helps, but not enough to account for the 2x discrepancy.
Ok, so the driver is loaded with the parameters that you specified. It would have been useful to see the systool output (loaded parameters section).
Let’s see the bitrate and RSSI…
/usr/sbin/iw dev wlan0 link
Metzli
August 29, 2021, 4:43am
#6
deano_ferrari:
Ok, so the driver is loaded with the parameters that you specified. It would have been useful to see the systool output (loaded parameters section).
Let’s see the bitrate and RSSI…
/usr/sbin/iw dev wlan0 link
So the output is how I determined it was not picking up the config file contents, which it is now, as shown below:
Module = "iwlwifi"
Attributes:
coresize = "339968"
initsize = "0"
initstate = "live"
refcnt = "1"
srcversion = "2A2248A321BDED128441849"
supported = "Yes"
taint = ""
uevent = <store method only>
Parameters:
** 11n_disable = "1" **
amsdu_size = "0"
** bt_coex_active = "N" **
debug = "0"
disable_11ac = "N"
disable_11ax = "N"
enable_ini = "Y"
fw_restart = "Y"
led_mode = "0"
nvm_file = "(null)"
power_level = "0"
power_save = "N"
remove_when_gone = "N"
swcrypto = "0"
uapsd_disable = "3"
Sections:
.altinstr_aux = "0xffffffffc11fdbbd"
.altinstr_replacement= "0xffffffffc11fdb60"
.altinstructions = "0xffffffffc121e690"
.bss = "0xffffffffc1220fc0"
.data.once = "0xffffffffc1220c0c"
.data = "0xffffffffc1220000"
.exit.text = "0xffffffffc11fdb4f"
.gnu.linkonce.this_module= "0xffffffffc1220c40"
.init.text = "0xffffffffc122f000"
.note.Linux = "0xffffffffc121edb0"
.note.gnu.build-id = "0xffffffffc11fe000"
.orc_unwind = "0xffffffffc121831f"
.orc_unwind_ip = "0xffffffffc1214267"
.parainstructions = "0xffffffffc121e850"
.rodata = "0xffffffffc11fe560"
.rodata.str1.1 = "0xffffffffc120d0d8"
.rodata.str1.8 = "0xffffffffc120f0f8"
.smp_locks = "0xffffffffc121ec5c"
.strtab = "0xffffffffc123b208"
.symtab = "0xffffffffc1230000"
.text = "0xffffffffc11db000"
__bug_table = "0xffffffffc1220468"
__jump_table = "0xffffffffc121f000"
__kcrctab_gpl = "0xffffffffc11fe408"
__ksymtab_gpl = "0xffffffffc11fe024"
__ksymtab_strings = "0xffffffffc1213b9b"
__mcount_loc = "0xffffffffc120c580"
__param = "0xffffffffc121e438"
Here is the bitrate/RSSI
Connected to 6c:b0:ce:af:4a:a8 (on wlan0)
SSID: WIFI_8568
freq: 5180
RX: 13489215 bytes (12770 packets)
TX: 1142769 bytes (7772 packets)
signal: -70 dBm
tx bitrate: 36.0 MBit/s
bss flags: short-slot-time
dtim period: 2
beacon int: 100
and iwconfig output for u/Marel
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11 ESSID:"WIFI_8568"
Mode:Managed Frequency:5.18 GHz Access Point: 6C:B0:CE:AF:4A:A8
Bit Rate=54 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:on
Link Quality=42/70 Signal level=-68 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:45 Missed beacon:0
Once again, I’m getting ~60Mbps on Windows. Same machine/wifi network.
I knew that, but we’re not over your shoulder to check for ourselves, hence why it is good practice to post requested commands and the resulting output.
Here is the bitrate/RSSI
Connected to 6c:b0:ce:af:4a:a8 (on wlan0)
bss flags: short-slot-time
dtim period: 2
beacon int: 100
This is consistent with a legacy wifi mode (802.11a/g) in use. Not surprising since you’ve disabled 802.11n mode.
As you already know some experimentation is required. Can you try enabling link aggregation with
options iwlwifi 11n_disable=8
and perhaps together with swcrypto
swcrypto=1
FWIW, many others struggling with this (and similar) hardware…https://bugzilla.kernel.org/show_bug.cgi?id=203709
BTW, does your AP support 2.4GHz connectivity as well? That might be worth a shot as some users found in the bugzilla thread.
Metzli
September 4, 2021, 3:34am
#9
deano_ferrari:
As you already know some experimentation is required. Can you try enabling link aggregation with
options iwlwifi 11n_disable=8
and perhaps together with swcrypto
swcrypto=1
FWIW, many others struggling with this (and similar) hardware…https://bugzilla.kernel.org/show_bug.cgi?id=203709
BTW, does your AP support 2.4GHz connectivity as well? That might be worth a shot as some users found in the bugzilla thread.
Sorry for the slow reply.
It does support 2.4Ghz but that won’t be necessary, looks like the 11n_disable=8 by itself did the trick.
BEFORE:
Module = "iwlwifi"
Attributes:
coresize = "339968"
initsize = "0"
initstate = "live"
refcnt = "1"
srcversion = "2A2248A321BDED128441849"
supported = "Yes"
taint = ""
uevent = <store method only>
Parameters:
** 11n_disable = "1" **
amsdu_size = "0"
** bt_coex_active = "N" **
debug = "0"
disable_11ac = "N"
disable_11ax = "N"
enable_ini = "Y"
fw_restart = "Y"
led_mode = "0"
nvm_file = "(null)"
power_level = "0"
power_save = "N"
remove_when_gone = "N"
swcrypto = "0"
uapsd_disable = "3"
Sections:
.altinstr_aux = "0xffffffffc1232bbd"
.altinstr_replacement= "0xffffffffc1232b60"
.altinstructions = "0xffffffffc1253690"
.bss = "0xffffffffc1255fc0"
.data.once = "0xffffffffc1255c0c"
.data = "0xffffffffc1255000"
.exit.text = "0xffffffffc1232b4f"
.gnu.linkonce.this_module= "0xffffffffc1255c40"
.init.text = "0xffffffffc1264000"
.note.Linux = "0xffffffffc1253db0"
.note.gnu.build-id = "0xffffffffc1233000"
.orc_unwind = "0xffffffffc124d31f"
.orc_unwind_ip = "0xffffffffc1249267"
.parainstructions = "0xffffffffc1253850"
.rodata = "0xffffffffc1233560"
.rodata.str1.1 = "0xffffffffc12420d8"
.rodata.str1.8 = "0xffffffffc12440f8"
.smp_locks = "0xffffffffc1253c5c"
.strtab = "0xffffffffc1270208"
.symtab = "0xffffffffc1265000"
.text = "0xffffffffc1210000"
__bug_table = "0xffffffffc1255468"
__jump_table = "0xffffffffc1254000"
__kcrctab_gpl = "0xffffffffc1233408"
__ksymtab_gpl = "0xffffffffc1233024"
__ksymtab_strings = "0xffffffffc1248b9b"
__mcount_loc = "0xffffffffc1241580"
__param = "0xffffffffc1253438"
Connected to 6c:b0:ce:af:4a:a8 (on wlan0)
SSID: WIFI_8568
freq: 5180
RX: 90513368 bytes (63246 packets)
TX: 3015460 bytes (22208 packets)
signal: -69 dBm
** tx bitrate: 36.0 MBit/s **
bss flags: short-slot-time
dtim period: 2
beacon int: 100
web speed test shows ~25Mbps down
AFTER:
Module = "iwlwifi"
Attributes:
coresize = "339968"
initsize = "0"
initstate = "live"
refcnt = "1"
srcversion = "2A2248A321BDED128441849"
supported = "Yes"
taint = ""
uevent = <store method only>
Parameters:
** 11n_disable = "8" **
amsdu_size = "0"
bt_coex_active = "Y"
debug = "0"
disable_11ac = "N"
disable_11ax = "N"
enable_ini = "Y"
fw_restart = "Y"
led_mode = "0"
nvm_file = "(null)"
power_level = "0"
power_save = "N"
remove_when_gone = "N"
swcrypto = "0"
uapsd_disable = "3"
Sections:
.altinstr_aux = "0xffffffffc1223bbd"
.altinstr_replacement= "0xffffffffc1223b60"
.altinstructions = "0xffffffffc1244690"
.bss = "0xffffffffc1246fc0"
.data.once = "0xffffffffc1246c0c"
.data = "0xffffffffc1246000"
.exit.text = "0xffffffffc1223b4f"
.gnu.linkonce.this_module= "0xffffffffc1246c40"
.init.text = "0xffffffffc0ff3000"
.note.Linux = "0xffffffffc1244db0"
.note.gnu.build-id = "0xffffffffc1224000"
.orc_unwind = "0xffffffffc123e31f"
.orc_unwind_ip = "0xffffffffc123a267"
.parainstructions = "0xffffffffc1244850"
.rodata = "0xffffffffc1224560"
.rodata.str1.1 = "0xffffffffc12330d8"
.rodata.str1.8 = "0xffffffffc12350f8"
.smp_locks = "0xffffffffc1244c5c"
.strtab = "0xffffffffc0fff208"
.symtab = "0xffffffffc0ff4000"
.text = "0xffffffffc1201000"
__bug_table = "0xffffffffc1246468"
__jump_table = "0xffffffffc1245000"
__kcrctab_gpl = "0xffffffffc1224408"
__ksymtab_gpl = "0xffffffffc1224024"
__ksymtab_strings = "0xffffffffc1239b9b"
__mcount_loc = "0xffffffffc1232580"
__param = "0xffffffffc1244438"
Connected to 6c:b0:ce:af:4a:a8 (on wlan0)
SSID: WIFI_8568
freq: 5180
RX: 364848 bytes (817 packets)
TX: 127697 bytes (815 packets)
signal: -67 dBm
** tx bitrate: 240.0 MBit/s MCS 13 40MHz short GI
**
bss flags: short-slot-time
dtim period: 2
beacon int: 100
web speed test shows ~ 60 Mbps down, now consistent with Windows, which I think is the cap for my data plan.
Thanks everyone!
Metzli:
Sorry for the slow reply.
It does support 2.4Ghz but that won’t be necessary, looks like the 11n_disable=8 by itself did the trick.
…web speed test shows ~ 60 Mbps down, now consistent with Windows, which I think is the cap for my data plan.
Thanks everyone!
Glad to have been of guidance. Thanks for the update.