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--- tips:hw:hp [2021/09/02 11:56] – ngiacobbo
+++ tips:hw:hp [2024/10/14 07:05] (current) – sscipioni
@@ Line 1: / Line 1: @@
 ====== Install Ubuntu 21.04 ======
-Use a USB to boot the ubuntu 21.04
+to maintain Windows installed:
+. disable BitLocker (Impostazioni->Aggiornamenti Sicurezza->Crittografia->Disabilità)
+. disable Secure Boot (from BIOS)
+. re-order the booting devices (from BIOS)
+. use a USB to boot the ubuntu 21.04
 ==== Possible issues ====
 **Backlight / nomodeset**
-In case you are using a laptop with intel i7 gen. 11th and iRIS XE graphics you should use kernel **5.11.0-16-generic** (`uname -r`)
+In case you are using a laptop with intel i7 gen. 11th and iRIS XE graphics you should use kernel **5.11.0-16-generic**
+A possible solution is to add the following lines in **/etc/default/grub**:
+	GRUB_DEFAULT=saved
+	GRUB_SAVEDEFAULT=true
+Then reboot the system, select //Opzioni avanzate per Ubuntu// and //Ubuntu, con Linux 5.11.0-16-generic//. You must do that only once to save your preferences.
 **Wi-fi**
@@ Line 11: / Line 21: @@
 To install the correct drive you should follow these command (and might read the discussion at this [link](https://forum.ubuntu-it.org/viewtopic.php?t=637471)):
 . Make sure you have a proper build environment and dkms installed.
-. sudo apt install bc module-assistant build-essential dkms
+. sudo su
-. sudo m-a prepare
+. apt install bc module-assistant build-essential dkms
-. apt install rtl8821ce-dkms
+. m-a prepare
+. apt install rtl8821ce-dkms
+==== HP Z640 ====
+* https://blog.frehi.be/2022/05/04/updating-hp-bios-firmware-from-linux/

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