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Ubuntu 21.04: wi-fi network disappears in middle of session

in flag
mehrlicht

I've been experiencing problems with the wifi going down all of a sudden.

I already tried some solutions I found here but to no avail. It only solved part of the problem. Now If I restart I have wifi, whereas before it could go either way and sometimes the mouse did not work.

I've already updated the kernel to 5.13.4-051304-generic. I've already installed the updated driver from https://wireless.wiki.kernel.org/_media/en/users/drivers/iwlwifi-8265-ucode-22.361476.0.tgz

If I go to wi-fi through Activities it shows wi-fi network not found.

outputs:

while wi-fi not working

$lspci -nn
Network controller [0280]: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)

$sudo lshw -C network
  *-network UNCLAIMED       
       description: Network controller
       product: Wireless 8265 / 8275
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       version: 78
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: memory:b4200000-b4201fff

$sudo dmesg | grep iwlwifi
iwlwifi 0000:04:00.0: Firmware error during reconfiguration - reprobe!

while wi-fi working:

$lsmod | grep iwlwifi
iwlwifi               380928  1 iwlmvm
cfg80211              897024  3 iwlmvm,iwlwifi,mac80211

$sudo lshw -C network
  *-network                 
       description: Wireless interface
       product: Wireless 8265 / 8275
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wlo1
       version: 78
       serial: d0:c6:37:e6:26:cf
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.13.4-051304-generic firmware=36.ad812ee0.0 8265-36.ucode ip=192.168.1.184 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:132 memory:b4200000-b4201fff

Any help is appreciated

EDIT requested outputs:

grep -i iwlwifi /var/log/syslog*

sudo dmesg | grep -i iwlwifi

sudo journalctl -b 0 -u NetworkManager

67
0 + 7
waltinator avatar
it flag
waltinator
Look at the logs! `sudo journalctl -b 0 -u NetworkManager`. Read `man journalctl`.
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heynnema avatar
ru flag
heynnema
Did your problem begin BEFORE or AFTER you upgraded the kernel and the wireless firmware? The 5.13.4 kernel was probably not the right thing to do. Is this a laptop or desktop computer? Edit your question and show me `sudo dmesg | grep -i iwlwifi` and `grep -i iwlwifi /var/log/syslog*`. No screenshots please. Use copy/paste. After pasting, select the pasted text and click the {} button to properly format it. If the output is very large, use paste.ubuntu.com.
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chili555 avatar
cn flag
chili555
You might try updating the firmware: https://packages.ubuntu.com/impish/all/linux-firmware/download Afterwards, does the problem remain? Welcome to Ask Ubuntu.
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in flag
mehrlicht
@heynnema the problem began before. I upgraded the kernel and firmware trying to solve it. I've now updated the firmware like @chili555 recommended and the problem persists. I've edited the question to include the logs. I've also tried to repair packages with ```sudo apt dist-upgrade```: Nothing worked so far.
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heynnema avatar
ru flag
heynnema
I'd reseat the modem card in its slot. Report back.
1
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in flag
mehrlicht
@heynnema, did you mean doing ```sudo modprobe``` ? I did that and apparently it worked. It hasn't caused any problem in the last 30 hours. It was affecting me at least twice a day... Fingers crossed. I'll report back.
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heynnema avatar
ru flag
heynnema
@mehrlicht No, I meant to physically reseat the modem card in its slot. This is to eliminate a connection problem. A modprobe wouldn't have fixed it, as the driver gets reloaded during a boot/reboot.
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