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I am using Ubuntu 18.04 LTS on Dell Vostro 15 - 3546.

uname -a :

Linux <laptop-name> 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

When I open my laptop from shutdown the boot screen gets stuck. Hence I followed this and added nomodeset after quiet splash in /etc/default/grub . Then I further added acpi_backlight=vendor after that, due to brightness problems. Now, the line looks like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_backlight=vendor"

After this, I need to manually hold Shift during the boot and need to Enter into Ubuntu. However, It still gets stuck on the boot screen, so I need to again hold the Power button and force shutdown. Then, when I again Enter into Ubuntu, I am finally able to open the device.

This procedure is too long and please help me solve this issue.

Thanks in advance.

Ubuntovative is here
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  • You should only have nomodeset until you install proprietary nVIdia driver if you have nVidia card/chip. If using it after installing driver it may interfere. Did you install in UEFI boot mode? Have you updated UEFI to latest available? – oldfred Sep 02 '20 at 13:44
  • @oldfred can you answer here: https://askubuntu.com/q/1273449/1013762 – Ubuntovative is here Sep 16 '20 at 04:07
  • Remove the nomodeset setting in /etc/default/grub. Use nomodeset as you boot with e on grub menu and add to linux line if you have not installed nVidia driver. https://askubuntu.com/questions/162075/my-computer-boots-to-a-black-screen-what-options-do-i-have-to-fix-it – oldfred Sep 16 '20 at 13:42

2 Answers2

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Try adding/substituting these lines to your /etc/default/grub
GRUB_DEFAULT=0
#GRUB_DEFAULT=saved
#GRUB_SAVEDEFAULT=true
#GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10

Don't forget to run sudo update-grub before you reboot.

darth_epoxy
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  • I am afraid some of my lines may get wrong. Can you exactly give the updated /etc/default/grub according to my file: https://drive.google.com/file/d/10alvKlwSatGAfBeahnYA28UQJ46Ptdtd/view?usp=sharing – Ubuntovative is here Sep 03 '20 at 06:15
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    OK for your specific example type # at the start of both your GRUB_HIDDEN_ lines and then change yout GRUB_TIMEOUT=1 to GRUB_TIMEOUT=10 and then insert a line and type GRUB_TIMEOUT_STYLE=menu – darth_epoxy Sep 03 '20 at 08:37
  • done. Do I have to change this line: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_backlight=vendor" – Ubuntovative is here Sep 03 '20 at 08:54
  • Not right now but eventually when you are booting correctly and all your drivers are running as intended you can remove the nomodeset as per @oldfred comment above. – darth_epoxy Sep 03 '20 at 10:42
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    just take a look at how has my system has changed: https://drive.google.com/file/d/1qtkdxrziHszgELBN-CfhWnsoWhwrVEOk/view?usp=sharing. The laptop continuously hangs and is lagging. PLEASE HELP !!! In the video, it is not so clear but the up-down transition effect is terrible. Just watch the video in fullscreen – Ubuntovative is here Sep 03 '20 at 11:11
  • Have you done a sudo-apt-get update lately? If you are now booting correctly then start a new question regarding the video lag. Ultimately you need to remove nomodeset from your boot command but you need help diagnosing first. Hence a new question with just the details (like your video) and indicate that you have nomodeset in your grub. – darth_epoxy Sep 03 '20 at 22:17
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Updated UEFI and graphic card.
Removed nomodeset and it worked !!!

Thanks @oldfred

Ubuntovative is here
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