[Bug 1883727] Re: problem to install ubuntu 20.04

[yurij]

So. After a set of tests I realized in the following.

1. Install process finished successfully if I use acpi=off flag. But 
- the system does not restart on "sudo restart now", it goes to "Reached Restart Target" and hangs.
- when I change later in grub acpi=on , the suspend operation does not work; "sudo restart now" still does not work.
- i do not specify any acpi=off to install Pop!OS 20 (it's sad it's based on ubuntu 20.04), and it works fine with suspend option at start.

2. When i install the system on SSD (with acpi=off) then it fails at the
very end with the message like "file system has not been finalized".
(But in Pop!OS 20 it is done fine again)

3. After the install it is detected and used nvidia graphic card and the
system works ok, then i switch to intel's one and back to the nvidia,
then the system does not start. Also, nvidia-settings in Ubuntu 20 show
only "PRIME PROFILES" section ( and there is a message in the terminal
about it can not load info ), but in Pop!OS 20 there is a full info
about nvidia card.

4. Also there is a login issue when it shows a login field on the screen
with other applications on the screen, and it does not log in even if
the password is correct. I'll try to upload video later.

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https://bugs.launchpad.net/bugs/1883727

Title:
  problem to install ubuntu 20.04

Status in ubiquity package in Ubuntu:
  New

Bug description:
  I have a problem to install ubuntu 20.04 onto dell Inspiron 15 7567.

  I've tried to install ubuntu 20.04 more than 10 times. it always hangs (more than 10 minues without any progress, in some cases mouse cursor disappears) but on random screen/stage: it could be either "try ubuntu", or any step after wifi setup window. 
  Windows 10 and Linux mint 19.03 was checked and installed fine with intel and nvidia gpus detected and they are also works fine.
  i install it from usb with iso image.

  Did you MD5 test the Ubuntu ISO you downloaded or use torrents to pull down the file?
  - Yes, before the screen with "install" button, the process checks files on the usb, and always finished with a report "no errors".
  Also, I'd like to mention, that i've checked via dell Assistant in UEFI a RAM and SSD and HDD disks (it took a couple of hours, but no errors were found).

  Did you select to install updates during install? (I suggest you don't).
  - yes, i've tried with different options, and i think, that install goes better without a checkbox about upload updates, but it could be just a feeling.

  I wish I have a way to read and provide logs for you ( and for me ) ,
  but i do not know how to gather them. Sometimes in rare cases i have a
  window with "Details" label below, and if click there are some
  messages in terminal-like text area, but there is a too small area to
  read them, and sometimes they move too fast, and i have no opportunity
  to write them down or anything else.

  -Is this to be a dual boot or is Ubuntu going to be the only OS on the?
  I tried both of types. Initially i've started with dual boot with win 10 pro, but after some attempts, I set to erase the whole disk and install only ubuntu 20.04 but it hangs for a lot of time too.

  -Do you have the latest BIOS?
  Yes, before it I've recently updated the last version (13 Mar 2020) of bios from dell support site. So, all attempts to install ubuntu 20 were after the update.

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