Não reconhece rede wi-fi

Tenho um notebook da Acer e uso-o há um mês. Ele reconhecia a rede wifi normalmente, mas ontem ele simplesmente desconectou e não consegui mais ligar o wifi, nem ao menos aparece o ícone no canto inferior direito. Quando entre nas configurações, não aparece o ícone de desligar o desligar, aparece apenas no modo de avião. Gostaria de saber como posso resolver esse problema.

Can you please provide us with a Diagnostics by running:

LANG=en_US.UTF-8 eos-diagnostics

and then upload the generated files here in this Thread.

eos-diagnostic-210323_072743_UTC-0300.txt (1,3,MB)

I see the reason in the log, but unfortunately have no good idea why this happens:

Working:

Mar 22 15:22:27 endless kernel: ath10k_pci 0000:03:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0
Mar 22 15:22:27 endless kernel: ath10k_pci 0000:03:00.0: qca9377 hw1.1 target 0x05020001 chip_id 0x003821ff sub 11
ad:08a6
Mar 22 15:22:27 endless kernel: ath10k_pci 0000:03:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
Mar 22 15:22:27 endless kernel: ath10k_pci 0000:03:00.0: firmware ver WLAN.TF.2.1-00021-QCARMSWP-1 api 6 features 
wowlan,ignore-otp crc32 42e41877
Mar 22 15:22:27 endless kernel: ath10k_pci 0000:03:00.0: board_file api 2 bmi_id N/A crc32 8aedfa4a
Mar 22 15:22:28 endless kernel: ath10k_pci 0000:03:00.0: htt-ver 3.56 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 h
wcrypto 1
Mar 22 15:22:28 endless kernel: ath10k_pci 0000:03:00.0 wlp3s0: renamed from wlan0

Not Working:

Mar 23 06:58:40 endless kernel: ath10k_pci 0000:03:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0
Mar 23 06:58:40 endless kernel: ath10k_pci 0000:03:00.0: qca9377 hw1.1 target 0x05020001 chip_id 0x003821ff sub 11
ad:08a6
Mar 23 06:58:40 endless kernel: ath10k_pci 0000:03:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
Mar 23 06:58:40 endless kernel: ath10k_pci 0000:03:00.0: firmware ver WLAN.TF.2.1-00021-QCARMSWP-1 api 6 features 
wowlan,ignore-otp crc32 42e41877
Mar 23 06:58:40 endless kernel: ath10k_pci 0000:03:00.0: board_file api 2 bmi_id N/A crc32 8aedfa4a
Mar 23 06:58:46 endless kernel: ath10k_pci 0000:03:00.0: wmi service ready event not received
Mar 23 06:58:46 endless kernel: ath10k_pci 0000:03:00.0: could not init core (-110)
Mar 23 06:58:46 endless kernel: ath10k_pci 0000:03:00.0: could not probe fw (-110)

For some reason, the Wireless Card could not initialize successfully. Normally i would guess that a system update has something to do with it, but there was none between those two entries.

Can you please download a Ubuntu Live CD and check if the card works there. If not, it’s probably a hardware fault, if yes, please tell us for further analysis.

Eu reiniciei o computador e funcionou normalmente.

O meu PC tbm está dando o mesmo problema, chegou ontem Acer Aspire 5 e desconecta constantemente…
eos-diagnostic-210411_222708_UTC-0300.txt (2,0,MB)

Can you please open a Terminal and execute:

echo -e "[connection]\nwifi.powersave = 0" | sudo tee /etc/NetworkManager/conf.d/99-wifi-powersave-off.conf

Then, reboot and verify if the problem still persists.

Reference:
https://developer.gnome.org/NetworkManager/stable/NetworkManager.conf.html