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Elementary OS is slow and unstable

elementary OS Asked by vsskamal on August 28, 2021

I’ve installed Elementary OS for web development and android development. I usually work with Vscode, terminal and multiple chrome tabs opened. I’m pretty sure that my laptop can handle it. I face lags in vscode and in chrome. Android Studio is also pretty lagging.

Spec:
8gb Ram,
AMD A10 processor,
Dedicated Graphics. AMD 530 Graphics 2gb,
Installed OS on SSD.
Dual boot with Windows 10

4 Answers

How to safely remove 5.7.8 kernel

cd /var/lib/initramfs-tools/
sudo rm -rf 5.7.8
cd /boot
sudo apt --purge remove linux-image-5.7.8
sudo rm -f config-5.7.8
sudo rm -f initrd.img-5.7.8
sudo rm -f System.map-5.7.8
sudo rm -f vmlinuz-5.7.8
sudo update-initramfs -u -k all
sudo update-grub
sudo systemctl reboot
sudo apt update && sudo apt upgrade && sudo apt dist-upgrade && sudo apt autoremove && sudo apt autoclean
sudo purge-old-kernels
sudo apt --purge autoremove
sudo update-initramfs -u -k all
sudo update-grub
sudo systemctl reboot

Answered by Sysadmin on August 28, 2021

How to install Realtek Wi-Fi drivers manually

Type in terminal:

cd
mkdir /home/username/Downloads/realtek
cd /home/username/Downloads/realtek
sudo apt-get install --reinstall git dkms build-essential linux-headers-5.3.0-62
git clone https://github.com/tomaspinho/rtl8821ce
cd rtl8821ce
sudo chmod +x dkms-install.sh
sudo chmod +x dkms-remove.sh

Type to install:

cd /home/username/Downloads/realtek/rtl8821ce
sudo ./dkms-install.sh

Type to remove if you will have to remove it after the reboot.

cd /home/username/Downloads/realtek/rtl8821ce
sudo ./dkms-remove.sh

Answered by Sysadmin on August 28, 2021

How to install Realtek firmware

Make directory for Realtek firmware
mkdir /home/username/Downloads/rtl
Enter directory for Realtek firmware
cd /home/username/Downloads/rtl
Download Realtek firmware
wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/rtl_nic/rtl8168fp-3.fw
wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/rtl_nic/rtl8125a-3.fw
Copy Realtek firmware to proper firmware directory in system
sudo cp rtl8168fp-3.fw /lib/firmware/rtl_nic 
sudo cp rtl8125a-3.fw /lib/firmware/rtl_nic
Update initramfs:
sudo update-initramfs -c -k 5.7.8
update GRUB:
sudo update-grub
check kernel version after reboot:
uname -mrs
check errors after reboot:
sudo journalctl -xb
sudo dmesg

Answered by Sysadmin on August 28, 2021

How to upgrade Elementary OS to the newest kernel.

Install necessary packages
sudo apt-get install build-essential libncurses-dev bison flex libssl-dev libelf-dev
Make directory for kernel
sudo mkdir /home/yourusername/Downloads/kernel
Download kernel 5.7.8
cd /home/username/Downloads/kernel
wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.7.8.tar.xz
tar -xf linux-5.7.8.tar.xz
cd linux-5.7.8
cp -v /boot/config-$(uname -r) .config
make menuconfig

Save config and then exit. Use tab button to select first the save button, then, OK, then Exit, and once again exit.

use 4 core/thread - if your processor have 4 cores
make -j 4
use 8 core/thread - if your processor have 8 cores
make -j 8
Type in terminal
sudo make modules_install 
sudo make install 
sudo update-initramfs -c -k 5.7.8
ignore these errors below, just because those three bin files are not made yet
W: Possible missing firmware /lib/firmware/amdgpu/navi12_ta.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi10_mes.bin for module amdgpu
W: Possible missing firmware /lib/firmware/amdgpu/navi12_dmcu.bin for module amdgpu
Update grub entries and restart the computer
sudo update-grub
sudo reboot

After restart open terminal and type, to check the kernel version:

uname -mrs
to check errors after reboot:
sudo journalctl -xb
sudo dmesg

Answered by Sysadmin on August 28, 2021

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