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This is an annoyance, but I thought I should post about it and see if anyone knows the solution.

I found:

But my situation is different as the laptop DOES eventually log in, it just takes a while (like 10 seconds or so, even if the user was already logged in and just locked).

I did try disabling Wayland, and it did not affect the problem (i.e. nothing improved).

I also found:

But there are no answers; it's probably related since I've had to log in a second time at least once.

The usual case is that I will come to the laptop (which is a family laptop which rarely has fewer than three users logged in), swipe up and find the lock screen for another user, click "log in as another user", wait for a second or two while it switches to the main login window, click on my name, type in my password, press enter, and then watch the screen blink nine times between a black screen and the login window (where I just put in my password) before it logs me in.

This isn't just my account; all the users in the family have this experience.

The question: How can I make logins faster and get rid of the flashing black screen experience?

(I'm expecting more information will be needed to answer the question, but I'm not sure what information I should include.)

The hardware is a Lenovo ThinkPad L540.

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  • I’ve switched to lightdm as this appears to be a bug in gdm. Hopefully it will be fixed when 20.04 rolls around.
    – Wildcard
    May 25, 2019 at 22:01
  • Nope, lightdm still has the issue. However, it doesn’t freeze up when I exit a virtual terminal the way gdm does.
    – Wildcard
    Jul 13, 2019 at 9:39
  • something in journal? journalctl | egrep 'gnome-shell|gdm|input|lightdm'
    – nobody
    Sep 30, 2019 at 9:59
  • @nobody that produces thousands and thousands of lines of output. I'll try looking at the recent errors next time I see the issue, but any more specific filter could be helpful.
    – Wildcard
    Oct 1, 2019 at 6:04

1 Answer 1

Reset to default
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I got same problem and tried to fix it for some time.

Try this one, this worked for me:

gsettings set org.gnome.shell.extensions.dash-to-dock transparency-mode FIXED

I found this solution here: https://ubuntuforums.org/showthread.php?t=2404491

Another user reported success by removing ubuntu dock extension

sudo apt-get remove gnome-shell-extension-ubuntu-dock

( I didn't tried this one jet, waiting for results after transperency-mode change )

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