I believe I was hit by the same bug. I'm using Ubuntu 20.04 on a ThinkPad X1 Carbon 4th. Manually installing the missing linux-modules- extra for 5.4.0-37 brings networking back, but I still had problems getting the system to detect external monitors. That is why I stay on 5.4.0-33 for the moment.
However, even on 5.4.0-33, the detection of external monitors sometimes fails. That means that aspect could be a false alarm (on my system). What I can confirm is that for me networking is definitely broken because of the missing linux-modules-extra, which were automatically installed for 5.4.0.33 but were missing in 5.4.0.37. After manually installing the package, networking works as before. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1883239 Title: Kernel modules missing in 5.4.0-37 Status in linux package in Ubuntu: Confirmed Bug description: I recently updated my Ubuntu 20.04 to the latest kernel (5.4.0-37) but upon reboot my Dell XPS lost a few peripherals, like the wifi, and the possibility to use the Dell WD-15 docking station for LAN or external monitors; USB hub functionality was working though. After some inspection, I've found that several kernel modules are missing for that specific kernel version: $ find /usr/lib/modules -iname ath10k /usr/lib/modules/5.4.0-28-generic/kernel/drivers/net/wireless/ath/ath10k /usr/lib/modules/5.4.0-31-generic/kernel/drivers/net/wireless/ath/ath10k /usr/lib/modules/5.4.0-33-generic/kernel/drivers/net/wireless/ath/ath10k And lspci shows the wireless card twice (one more time at the top) and that the following modules and drivers are not loaded for the proper devices: - i915 - processor_thermal_device - intel_pch_thermal - intel_lpss_pci - mei_me - snd_hda_intel - nouveau (but not the nvidia, which I'm using) - ath10k_pci - rtsx_pci Restarting with the previous kernel version (5.4.0-33) works without any issue. I'll attach both lspci outputs, but you can easily review the diff here: https://www.diffchecker.com/mVCbTzSL To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1883239/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
