2

Recently firmware including BIOS were updated on my laptop (Dell Precision 7530) and since then my Ubuntu does not boot on battery.

The problem happens when I enter Grub2 and are about to select boot option. Then after click on Ubuntu it gets stuck at Loading initial ramdisk.... It does not matter which kernel I select (5.3, 5.0, 4.15 etc) or whether I go simply after Ubuntu or Advanced Options. A behavior is the same for recovery mode.

It also does not want to hibernate (or sleep) - the mode that is activated if you click and hold for short while power button. I have a dual boot and Windows 10 loads fine on battery, there is only a problem with Ubuntu. There is no problem while laptop is on power. I can switch off plug and work on battery after system boot.

Any ideas on what the problem can be and how to solve it?

0

I got the below solution to my problem today:

Update : The solution is at the below link

https://www.dell.com/community/Precision-Mobile-Workstations/Precision-7540-will-only-boot-Linux-if-charger-is-connected/m-p/7523968#M3185

Adding kernel parameters solves the issue. Posting solution:

in /etc/default/grub add dis_ucode_ldr in this way

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash dis_ucode_ldr"

then

sudo update-grub

Update2: The grub menu is not visible (purple screen) but waiting or pressing enter do the job to boot on ubuntu.

Not the answer you're looking for? Browse other questions tagged or ask your own question.