Comment 33 for bug 1973434

Hi to all,

In this tutorial you can find a way to upgrade linux kernel in a not so dificult way: https://linuxhint.com/install-upgrade-latest-kernel-ubuntu-22-04/

In a nutshell:

Step 0: I recommend to do a backup before (using timeshift or other app)

Step 1: sudo apt update

Step 2: sudo add-apt-repository ppa:cappelikan/ppa -y

Step 3: sudo apt install mainline -y

Step 4: Open Ubuntu Mainline Kernel Installer (just search it)

Step 5: Install the kernel you want (I installed the last 6.07)

Step 6: If you disabled grub's timeout reactivate it with grub-customizer (here you can also add intel_iommu=off to GRUB_COMAND_LINE in an ease way), so you can choose the old kernel if things go wrong

I installed 6.07 and added intel_iommu=of, but I took my precautions when using it. I did a complete backup of my system before (you can install timeshift if you don't know how).

I also disabled thermald, uninstalled power-profile-daemon and installed cpu power manager extension from gnome.extensions (https://extensions.gnome.org/extension/945/cpu-power-manager/) to configure it in the higher cpu frequency.

I have a Toshiba C845 with 4 cores i7-3632qm with CPU power manager with top speed 2.9 - 3,2 ghz with 2 displays working and upgraded from 20.04 to 22.04

I saw improvements, but most after enabling again xorg. Seems old generation intel processors are better with it.

Nevertheless, the system is not as fluid as with 20.04 . For me it seems that gnome 42 improved design is more resource hungry than gnome 32.

Seems for my hardware is not worth updating. I also did a backup before upgrading so I think I will return to 20.04.

Hope this help!