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I have decided to install ubuntu 20.04 LTS on my acer e5-571. It had new HDD, completely clean. I have installed it successfully. After first booting the prompt commanded me to remove usb drive and press ENTER. I did it. After that MOK management appeared and I clicked "continue booting" or similar. After that black screen appears with underscore appearing and dissapearing. Please help :c

Edit: I have tried to wipe disc and reinstall again with

dd if=/dev/zero of=/dev/sda bs=1

but wiping didnt work it still boots the same way :c

Edit 2: I have tried to wipe it with

wipe -q /dev/sda

and now it prints "no bootable device" :cccc

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  • Could you update your question to include which model of Acer you're using? This may help someone provide more specific support as not all Acers are the same 👍🏻
    – user1091774
    Jan 30 at 0:10
  • Acer often needs UEFI update and if SSD, firmware update to SSD. If mok issues, often related to UEFI Secure Boot. If you have proprietary driver like nVidia, you have to set your own key. Often easier just to turn off UEFI Secure Boot. Most Acer need you to set "trust" on ubuntu entry in UEFI, but Secure Boot has to be on to do that. Newer posts say update to UEFI works, do not downgrade. Acer E5-573G, supervisor password & trust on ubuntu askubuntu.com/questions/706912/…
    – oldfred
    Jan 30 at 15:21
  • I was about to write it. I disabled UEFI secure boot and it worked like a charm. I have decided to do that after I have seen during booting a warning concerning X509 certifacate. Unfortuanately i have another problem beacuse fdisks shows two seperate partitions on my HDD, 465GB each but whole HDD is 500GB so something went wrong. But this is my "backup" laptop so I am not going to try to fix it. Thanks for your help :) Edit: The two partiotions error is a result of trying deleting the disk and installing it again, it's not tied to questions title
    – user1176995
    Jan 31 at 16:02
  • There might be some help here: askubuntu.com/questions/297080/… Jan 31 at 21:50
  • Damn i wish i have seen it earlier. Maybe someone will stumble upon your answer in this post.
    – user1176995
    Feb 1 at 8:35
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Acer often needs UEFI update and if SSD, firmware update to SSD.

If mok issues, often related to UEFI Secure Boot. If you have proprietary driver like nVidia, you have to set your own key to authorize the proprietary driver. Often easier just to turn off UEFI Secure Boot.

Acer need you to set "trust" on ubuntu entry in UEFI, but Secure Boot has to be on to do that. Newer Acer seem to also need control + S to open settings for AHCI or other.

Issues are often common by brand as essentially same UEFI used. More difference between Intel & AMD based systems, but still by brand.

Newer posts say update to UEFI works, do not downgrade as per this answer. Acer E5-573G, supervisor password & trust on ubuntu

Getting a black screen when installing or Live booting Ubuntu (any version) in my laptop

Acer Aspire 5 Model A515-54-5649 Intel Core i5-10210U Install Tutorial

https://ubuntuforums.org/showthread.php?t=2437702

Acer Aspire E15 will not dual boot, many details Trust settings in step 35

Acer Aspire E15 will not dual boot

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