unable to connect with 5ghz | Linux Mint Community🍵 | Page 1

vagrant sonnet Apr 10, 2026, 4:08 AM

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Im using the default wifi drive for linux mint and it unable to connect to 5ghz for some reasson, can someone tell me an alternative external wifi drive to use that is stable? rn Im using rtw88_8821ce

opaque cape Apr 10, 2026, 4:24 AM

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Ohhh.. I have one like this too. If it's similar enough to mine it gets stuck in a power saving mode. Disconnect the power and hold down the power button for 30 seconds then turn the computer on again.

vagrant sonnet Apr 10, 2026, 4:26 AM

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opaque cape Ohhh.. I have one like this too. If it's similar enough to mine it gets stuck in...

I mean I followed chat gpt guide to disable power saving mode thro editing a a file system from 3 to 2, I will try this too ig

vagrant sonnet Apr 10, 2026, 4:30 AM

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opaque cape Ohhh.. I have one like this too. If it's similar enough to mine it gets stuck in...

disconecting the power, you mean by unplug the charging cable? or disconecting the battery

opaque cape Apr 10, 2026, 4:31 AM

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Take out the charger and battery. You wanna drain the power out of it.

vagrant sonnet Apr 10, 2026, 4:31 AM

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opaque cape Take out the charger and battery. You wanna drain the power out of it.

oh uhh

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I cant do it then

opaque cape Apr 10, 2026, 4:31 AM

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Oh.. its one of those. One sec.

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What model is your laptop?

vagrant sonnet Apr 10, 2026, 4:35 AM

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opaque cape What model is your laptop?

hp laptop 15s du 1103tu

opaque cape Apr 10, 2026, 4:36 AM

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Okay. Disconnect the charger. Power the laptop off completely. Then hold the power button for 30 seconds. Then connect the charger and turn it on again.

vagrant sonnet Apr 10, 2026, 4:37 AM

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opaque cape Okay. Disconnect the charger. Power the laptop off completely. Then hold the po...

k? can you explain me how this gonna work to fix my 5ghz problem tho?

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I search it up and it said that the driver rtw88_8821ce linux come with is terrible at supporting 5ghz

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so Im thinking of switching into another wifi driver but the one I found are either too old or unstable

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but Ill try ur methot

opaque cape Apr 10, 2026, 4:38 AM

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So its sometimes because the wifi is stuck in power saving mode. Doing this forces the motherboard to put it back into a default state.

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It is at least good to check.

vagrant sonnet Apr 10, 2026, 4:40 AM

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Alr I did what u said, now well see if its woek

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Nope

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Did not work sadly

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opaque cape Apr 10, 2026, 4:47 AM

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^ I would try that.

vagrant sonnet Apr 10, 2026, 5:04 AM

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1 last thing to ask for any dev or support

vagrant sonnet Apr 10, 2026, 5:04 AM

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vagrant sonnet

Do this work even when I already have a wifi driver? Even if it suck

vagrant sonnet Apr 10, 2026, 9:55 PM

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The usb thing chat gpt said will not work

winter rock Apr 10, 2026, 9:56 PM

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please post result of inxi -SMNnxxz

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@vagrant sonnet

vagrant sonnet Apr 10, 2026, 9:58 PM

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System:
Kernel: 6.14.0-37-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3.0
Desktop: Cinnamon v: 6.6.7 tk: GTK v: 3.24.41 wm: Muffin dm: LightDM
Distro: Linux Mint 22.3 Zena base: Ubuntu 24.04 noble
Machine:
Type: Laptop System: HP product: HP Laptop 15s-du1xxx
v: Type1ProductConfigId serial: <superuser required> Chassis: type: 10
serial: <superuser required>
Mobo: HP model: 85F1 v: 37.29 serial: <superuser required>
part-nu: 2W7J7PA#UUF UEFI: Insyde v: F.53 date: 10/15/2021
Network:
Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
vendor: Hewlett-Packard RTL8111/8168/8411 driver: r8169 v: kernel pcie:
speed: 2.5 GT/s lanes: 1 port: 4000 bus-ID: 01:00.0 chip-ID: 10ec:8168
IF: eno1 state: down mac: <filter>
Device-2: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter
vendor: Hewlett-Packard driver: rtw_8821ce v: N/A pcie: speed: 2.5 GT/s
lanes: 1 port: 3000 bus-ID: 02:00.0 chip-ID: 10ec:c821
IF: wlo1 state: up mac: <filter>

winter rock Apr 10, 2026, 9:59 PM

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it's using the right driver

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open settings> Network item

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then show the tab for 'wireless'

vagrant sonnet Apr 10, 2026, 9:59 PM

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oh wait

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Im connected to 5ghz rn

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but its capped at 54mb/s

winter rock Apr 10, 2026, 9:59 PM

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the wireless tab should show a thing for radio channel

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or BAND, rather

vagrant sonnet Apr 10, 2026, 10:01 PM

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k

vagrant sonnet Apr 10, 2026, 10:02 PM

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winter rock then show the tab for 'wireless'

theres no wireless tab, only wifi

winter rock Apr 10, 2026, 10:02 PM

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ok that

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delete that pic

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you can test your signal efficiency with a CLI program called wavemon

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it said good signal, not excellent

vagrant sonnet Apr 10, 2026, 10:04 PM

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winter rock you can test your signal efficiency with a CLI program called `wavemon`

dowload it thro>

winter rock Apr 10, 2026, 10:04 PM

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terminal or software manager

vagrant sonnet Apr 10, 2026, 10:06 PM

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winter rock it said good signal, not *excellent*

yea cuz Im sitting in the next room to the wifi rotour rn, but even so the it still need to get around 100mb/s unlike 40mb/s Im using rn

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anyways I have wavemon

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click launch but nothing happen tho

winter rock Apr 10, 2026, 10:07 PM

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it's terminal

vagrant sonnet Apr 10, 2026, 10:07 PM

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oh

winter rock Apr 10, 2026, 10:07 PM

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wavemon

vagrant sonnet Apr 10, 2026, 10:07 PM

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alr

winter rock Apr 10, 2026, 10:08 PM

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open second terminal tab

vagrant sonnet Apr 10, 2026, 10:08 PM

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do I send pic or u want me to tell you?

winter rock Apr 10, 2026, 10:08 PM

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show exact result of cat /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

vagrant sonnet Apr 10, 2026, 10:08 PM

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wifi powersave = 2

winter rock Apr 10, 2026, 10:09 PM

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ok, that's good

vagrant sonnet Apr 10, 2026, 10:09 PM

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cat /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[connection]
wifi.powersave = 2

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wavemon said rx and tx rate both is 54mb/s which is what Im trying to fix

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freq 5220

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MHz

winter rock Apr 10, 2026, 10:10 PM

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ok

vagrant sonnet Apr 10, 2026, 10:11 PM

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is this a normal issue?

winter rock Apr 10, 2026, 10:11 PM

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vagrant sonnet wifi powersave = 2

in this tab, run uptime and tell result

vagrant sonnet Apr 10, 2026, 10:11 PM

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18:11:10 up 17 min, 1 user, load average: 0.59, 0.91, 0.73

winter rock Apr 10, 2026, 10:11 PM

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ok quite recent

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just checking if rebooted since altering powersave value from 3

vagrant sonnet Apr 10, 2026, 10:12 PM

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winter rock just checking if rebooted since altering powersave value from 3

I have it set on powersave value at 2 from yesterday night

winter rock Apr 10, 2026, 10:12 PM

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yeah and you rebooted since

vagrant sonnet Apr 10, 2026, 10:13 PM

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winter rock yeah and you rebooted since

like 20 times since

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xD lwk just trying everything to remove the limit cap

winter rock Apr 10, 2026, 10:13 PM

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well that's as far as I know. you can walk around with laptop and see if wavemon picks up better signal

vagrant sonnet Apr 10, 2026, 10:13 PM

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at 3MB/s gonna take me 10381284 years to dowload things I need so

vagrant sonnet Apr 10, 2026, 10:14 PM

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winter rock well that's as far as I know. you can walk around with laptop and see if wavemon...

😭 alright thanks for your help tho, appreciate it

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also is there anyways to contact like some developer

winter rock Apr 10, 2026, 10:14 PM

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idk. still to determine if it's radio interference/hardware

vagrant sonnet Apr 10, 2026, 10:15 PM

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well chat gpt said about smt legacy legacy 802.11a smt

winter rock Apr 10, 2026, 10:15 PM

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remove any 5 Ghz appliances if any from the vicinity

vagrant sonnet Apr 10, 2026, 10:15 PM

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sound like hardware to me

vagrant sonnet Apr 10, 2026, 10:15 PM

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winter rock remove any 5 Ghz appliances if any from the vicinity

none

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Im home alone rn and nothing eles is using 5ghz

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exept my tv use ethernet cable

winter rock Apr 10, 2026, 10:16 PM

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if u put laptop 3 feet from router, antenna perpendicular, check wavemon and run a practical test

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https://pcmag.speedtestcustom.com

vagrant sonnet Apr 10, 2026, 10:17 PM

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K

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21.4
Mbps dowload

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25.6
Mbps

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sitting next to rotours rn

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wavemon signal streght is 100

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signal lv is -28dbm

winter rock Apr 10, 2026, 10:20 PM

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jitter low?

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in the website results

vagrant sonnet Apr 10, 2026, 10:20 PM

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jitter 1

winter rock Apr 10, 2026, 10:20 PM

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ok

vagrant sonnet Apr 10, 2026, 10:21 PM

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Tx is the rate the device sends data to the Access Point (AP), while Rx is the rate the AP sends data to the device.

winter rock Apr 10, 2026, 10:21 PM

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what is your ISP plan that you're paying for? its advertised maximum d/l speed

vagrant sonnet Apr 10, 2026, 10:21 PM

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winter rock what is your ISP plan that you're paying for? its advertised maximum d/l speed

my parents pay for it, but before it was pretty strong, around 400megabits per seccond

winter rock Apr 10, 2026, 10:21 PM

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hmm

vagrant sonnet Apr 10, 2026, 10:22 PM

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now I can only reach 25 megabits per seccond in linux

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before I use window

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but base on what wavemon telling, I think is about the harddrive that is limiting the speed

winter rock Apr 10, 2026, 10:22 PM

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perhaps @last sparrow may know about this similar issues

vagrant sonnet Apr 10, 2026, 10:23 PM

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winter rock perhaps <@891385978864930886> may know about this similar issues

k, can you ask him right now?

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at this speed, I can barely dowload anything

last sparrow Apr 10, 2026, 10:24 PM

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Are you using kernel modules or ones from morrownr?

vagrant sonnet Apr 10, 2026, 10:24 PM

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last sparrow Are you using kernel modules or ones from morrownr?

no

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Im using the default linux mint install with

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I dont know if its the one from morrownr that linux come with either

winter rock Apr 10, 2026, 10:25 PM

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negotiated link speed states 54 Mb/s in linux network GUI

vagrant sonnet Apr 10, 2026, 10:25 PM

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winter rock negotiated link speed states 54 Mb/s in linux network GUI

in wavemon too

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recive rate and transmit wave both at 54.0mbit/s

winter rock Apr 10, 2026, 10:26 PM

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vagrant sonnet System: Kernel: 6.14.0-37-generic arch: x86_64 bits: 64 compiler: gcc v: 13.3....

sys info for Jeremy

last sparrow Apr 10, 2026, 10:26 PM

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https://github.com/lwfinger/rtw88 might work better

GitHub

GitHub - lwfinger/rtw88: A backport of the Realtek Wifi 5 drivers f...

A backport of the Realtek Wifi 5 drivers from the wireless-next repo. - lwfinger/rtw88

vagrant sonnet Apr 10, 2026, 10:27 PM

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k, I will try

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but if I install this, will it clash with the current wifi driver?

last sparrow Apr 10, 2026, 10:27 PM

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If you follow the instructions, it won't

vagrant sonnet Apr 10, 2026, 10:27 PM

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k

winter rock Apr 10, 2026, 10:28 PM

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The maximum practical real-world speed of 802.11ac (Wi-Fi 5) generally ranges between 400 Mbps and 700 Mbps. While theoretical speeds can exceed 1 Gbps (1300 Mbps or higher), practical throughput is reduced by Wi-Fi overhead, distance, and interference.

last sparrow Apr 10, 2026, 10:29 PM

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I think Larry Finger mentioned issues with HP and Lenovos with RTL8821ce that are likely fixed with that github

winter rock Apr 10, 2026, 10:30 PM

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5 GHz Requirement: These speeds require a clean, 80 MHz channel in the 5 GHz band.

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i presume that means 80 Mhz channel width

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something to review in the router setup page perhaps

vagrant sonnet Apr 10, 2026, 10:39 PM

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last sparrow https://github.com/lwfinger/rtw88 might work better

I followed all the instruction, exept for the step 6 cuz I have secure boot disable, yet after reboot the wifi still stuck at 54mb/s

vagrant sonnet Apr 10, 2026, 11:03 PM

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specifely [ 246.246601] wlo1: required MCSes not supported, disabling HT

vagrant sonnet Apr 10, 2026, 11:19 PM

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well now that we know High Throughput is disable because MCS is failed

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thats may explain why the wifi is limit at 54mb/s

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plus PCIe bus error rxerr

vagrant sonnet Apr 10, 2026, 11:52 PM

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also is it weird that even the recive and transmit is at 54mb/s which is 6MB/s but I only get around 2MB/s

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even signal streght is at max

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man, I rlly need to get this fixed asap

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otherwise I may have to switch os back to window

vagrant sonnet Apr 11, 2026, 12:13 AM

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@winter rock @last sparrow I found smt interesting

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📎 message.txt

#unable to connect with 5ghz