Random tech tips:
DateLenovo T520Xubuntu 14.04 LTS
20160823Xubuntu 14.04.5
LTS kernel 4.4.0-34
Newest working nvidia driver version is 352 (I tried 358, 361, 364, 367 and 370)
Problems appeared after Xubuntu nagged me into upgrading the kernel etc,
since the old Hardware Enablement stack expired 20160804
Press alt+ctrl F3
Login as root
apt-add-repository ppa:graphics-drivers/ppa
service lightdm stop
apt-get purge nvidia-*
apt-get install nvidia-352
reboot
Just uninstalling everything nvidia with apt-get purge nvidia-*
also worked, reverting to the nouveau drivers
DateHP Microserver gen8Ubuntu 16.04.2 LTS
20170412Ubuntu 16.04.2 LTSNo wired network after fresh install:
Replace eno1 with em1 in /etc/network/interfaces
DateUbuntu 18.04Ubuntu 18.04.2 LTS forwards
20190719Ubuntu 18.04.2 LTSDisabling reboot magic:
cd /etc/apt ; sudo mkdir -p apt.conf.d.hidden
sudo mv apt.conf.d/20auto-upgrades apt.conf.d.hidden/.
sudo mv apt.conf.d/50unattended-upgrades apt.conf.d.hidden/.
sudo mv apt.conf.d/20snapd.conf apt.conf.d.hidden/.
# and remove that pesky snap system
20190719Ubuntu 18.04.2 LTSManual upgrade:
sudo apt update && sudo apt -y upgrade && sudo apt -y autoremove ; more /var/run/reboot-required
DateLenovo Yoga 730 13.3Dualboot Ubuntu 18.04.2 LTS forwards + Windows 10
20190806Windows update/
Lenovo BIOS update
When machine will not boot during or after Windows or BIOS update,
and BSOD complains about INACCESSIBLE_BOOT_DEVICE,
just change SATA from RST to ACHI in BIOS (boot with F2)
20190806Ubuntu 18.04.2When AC wifi drops connection after a few minutes, do this
(might be needed again after kernel update)
sudo apt-get install git build-essential dkms linux-headers-$(uname -r)
git clone https://github.com/tomaspinho/rtl8821ce; cd rtl8821ce
chmod +x dkms-install.sh dkms-remove.sh
sudo ./dkms-install.sh
20190806Windows 10When AC wifi drops connection after a few minutes, google which driver to install,
or just use non AC wifi...
DateHPE DL380 Gen10 + Lenovo SR-630Interchangeable original CPUs
20200201Ubuntu 18.04.4Two original HPE Intel Gold 5118 CPUs for a DL360 (1U) could be used in a Lenovo SR-630 (1U).
20200201Ubuntu 18.04.4Two original Lenovo Silver 4210 CPUs for Lenovo SR-650 (2U) could be used in an HPE DL380 Gen10 (2U),
but the air guide above the CPUs had to be removed to be able to close the cabinet lid,
and the system BIOS had to be updated to make the Gen10 support this newer CPUs.
DateHPE DL380 Gen10IL05 firmware update via ilorest to calm down the fans
20200301Ubuntu 18.04.4ILO5 fw can be updated from version 1.35 to 2.14 via ilorest,
but only by updating from 1.35 to 1.46, then from 1.46 to 2.14.
This solved the problem with fans running too loud.