Low WiFi dbm on Windows and Linux, but new adapter doesn't fix the problem.
I recently brought my laptop into the shop to replace the power connection. When it came back, I ran the recommended updates in Ubuntu Software Updater. I also noticed the internet connection was slow.
I have an Intel 8260NGW wifi adapter.
- I ran
iwconfigto verify signal strength (-79dbm next to eero 6 extender, dropping to -90 and disconnecting fifteen feet away without obstructions)
lo no wireless extensions. wlp3s0 IEEE 802.11 ESSID:"My network" Mode:Managed Frequency:5.765 GHz Access Point: D0:16:7C:24:0F:83 Bit Rate=195.1 Mb/s Tx-Power=22 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=36/70 Signal level=-74 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:20 Invalid misc:2595 Missed beacon:0
- I ran
lshw -c networkto verify my driver (iwlwifi-5.19.0-38-generic, on Intel's page of linux drivers I think?).
*-network description: Wireless interface product: Wireless 8260 vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlp3s0 version: 3a serial: 34:f6:4b:61:a6:25 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=5.19.0-38-generic firmware=36.ca7b901d.0 8000C-36.ucode ip=192.168.4.137 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:140 memory:ed100000-ed101fff
- I then rebooted to Windows, checked the Wifi Analyzer app, and saw the same -79 dbm.
- I borrowed another Windows laptop, which reads -35 dbm next to the extender.
- Thinking it's gotta be that the tech damaged the adapter, I pop out the battery and swap out a new 8260NGW I got on Amazon. Signal strength is unchanged on Windows and Linux.
What else can I do? Will accept troubleshooting on Windows or Linux, but my main use is Linux.