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Display resolution and Wifi gone after kernel upgrade

cn flag

Some months ago I installed AMD ROCm on my Ubuntu (the PC has a Radeon GPU). As ROCm back then didn't support kernel 5.8 I removed kernel 5.8 and install kernel 5.4. It was silly to remove 5.8, but I didn't know better. Anyhow, with kernel 5.4 all was good.

Today, the latest version of ROCm supports kernel 5.8 (at least that's what they claim) and I'd like to switch back to the default kernel of Ubuntu. I installed a kernel like this:

sudo apt-get install linux-image-5.8.0-55-generic linux-headers-5.8.0-55-generic linux-modules-5.8.0-55-generic

When I boot Ubuntu with this kernel the icons and font are way too big and Wifi is not there. What am I missing?

guiverc avatar
cn flag
Why are you installing specific kernels? Just enable/disable the HWE/GA stack (you can have your system install both, and you select at grub which you want to use, even make one the default over the other).. I'd opt for normal routes so upgrades occur, rather than specific kernel installs (meaning it's on you to update/patch yourself manually) - https://wiki.ubuntu.com/Kernel/LTSEnablementStack
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