My Situation is exactly equal to OP's from this question (except for the exact hardware configuration; I can add some more details if needed), but the answer that fixed the issue there didn't work for me. In particular, the output to sudo dmesg |grep iwl
is practically the same, i.e.
[ 3.252011] iwlwifi 0000:00:14.3: loaded firmware version 34.3125811985.0 op_mode iwlmvm
[ 3.299337] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9560, REV=0x318
[ 3.343796] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
[ 3.343813] iwlwifi 0000:00:14.3: Not valid error log pointer 0x00000000 for Init uCode
[ 3.343932] iwlwifi 0000:00:14.3: SecBoot CPU1 Status: 0x3, CPU2 Status: 0x2458
[ 3.343933] iwlwifi 0000:00:14.3: Failed to start INIT ucode: -5
[ 3.356889] iwlwifi 0000:00:14.3: Failed to run INIT ucode: -5
However, there, the issue was resolved by the combination
sudo rmmod iwlmvm && sudo modprobe iwlmvm
When I execute this, the output of sudo dmesg |grep iwl
just adds a few lines indicating more that isn't working:
[ 3.252011] iwlwifi 0000:00:14.3: loaded firmware version 34.3125811985.0 op_mode iwlmvm
[ 3.299337] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9560, REV=0x318
[ 3.343796] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
[ 3.343813] iwlwifi 0000:00:14.3: Not valid error log pointer 0x00000000 for Init uCode
[ 3.343932] iwlwifi 0000:00:14.3: SecBoot CPU1 Status: 0x3, CPU2 Status: 0x2458
[ 3.343933] iwlwifi 0000:00:14.3: Failed to start INIT ucode: -5
[ 3.356889] iwlwifi 0000:00:14.3: Failed to run INIT ucode: -5
[ 214.811314] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9560, REV=0x318
[ 214.856704] iwlwifi 0000:00:14.3: Microcode SW error detected. Restarting 0x0.
[ 214.856720] iwlwifi 0000:00:14.3: Not valid error log pointer 0x00000000 for Init uCode
[ 214.856868] iwlwifi 0000:00:14.3: SecBoot CPU1 Status: 0x3, CPU2 Status: 0x2458
[ 214.856877] iwlwifi 0000:00:14.3: Failed to start INIT ucode: -5
[ 214.869585] iwlwifi 0000:00:14.3: Failed to run INIT ucode: -5
The output to iw list
is also, still, nothing.
I also did (prior to following above linked answer)
sudo apt-get install --reinstall bcmwl-kernel-source
which also didn't help and might have been a mistake.
Any further help is very much appreciated!
EDIT: For some reason WiFi works again, I don't know why. I did two things (in this order):
- I booted in Windows (to check whether WiFi works there; it does)
- I connected and then disconnected to a VPN-service
- I ran
sudo ifup -a
as suggested in the comments
Unfortunately I didn't check whether it worked in between the two steps, so I don't know what helped (I don't know why the first or second step should, but who knows?). It was not the reboot alone, I did that multiple times during the process.
Thanks a lot to everybody who participated in finding the solution!
Best Answer
I am the author of the linked [solution post] up top.
The fix
sudo rmmod iwlmvm && sudo modprobe iwlmvm
only becomes possible once you disableSecureBoot
(this was mentioned in the initial comments followed by bolded disclaimer reiterating the necessity of this approach)The disabling of the SecureBoot is the most fundamental step, as it is preventing the loading of corresponding drivers for your wifi.
sudo init 6
could accomplish this in one reboot, or even allowing the machine to sit completely powered off for some time).