APT / https://packages.ubuntu.com says that these files came from official deb-packages:
So if you have not changed their contents, then they are ok.
Something similar happened to me, following is a summary and how I got it sorted out:
What I was doing
Downloaded the latest Windows 10 ISO from official website
Used Brasero to create the bootable USB using the ISO - could only select dosfs as the filesystem
Created the bootable USB drive and booted the PC using that, continued to install Windows
At the ...
I had the same issue when I updated to 5.8.0-63 kernel. My wifi, sound and graphics were messed up.
Following the answers by Jörg and Harish above, I booted into an older kernel with working internet from the Ubuntu advanced options in the boot menu and ran the following command
dpkg -l | grep linux-
I installed the 2 packages: headers and extra, that were ...
If you can use USB tethering on a smartphone or some other method of connecting to the Internet, use your tethering to install rtl8821ce-dkms via apt, which will build the driver automatically. You simply reboot once installation complete, and you have Wi-Fi available.
Otherwise, you need to download dkms and your rtl8821ce-dkms packages to another machine ...
There is no need to upgrade your drivers. In older Ubuntu versions, the graphics driver was distributed as xserver-xorg-video-intel, which is updated as part of the system by Software Update. Since 21.04, the default Ubuntu session uses Wayland, which in turn uses DRI/DRM. Now, drivers are an integral part of the Linux kernel. Instead, you need to verify ...
Your wireless may be dropping because of power management; that is, the feature where the card partially powers down to save battery power during periods of inactivity and then, ideally, powers back up seamlessly when activity resumes. Let's disable power saving to see if it helps. From the terminal:
sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*