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I have got a new Entroware Apollo with Ubuntu 20.04 pre-installed. I have had an occasional but not infrequent issue of my computer screen freezing after login when it is woken up but have no issues at boot. Once I type my password in, it freezes and despite waiting for a long time it doesn't unfreeze.

Is anybody familiar with a method of fixing this or know whether this is a bug?

ThunderBird
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Matthew Falcone
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4 Answers4

1

I'm also having the same problem with fresh installation of Ubuntu 20.10.

After some research, i found that the /etc/securetty file didn't exist and gdm3 systemd service reported this:

Error message

In text form:

pam_unix(gdm-password:auth): Couldn't open /etc/securetty: No such file or directory

I created this file and now suspend is working correctly

Guide: Ubuntu 20.04 and 20.10, /etc/securetty: No such file or directory

Greenonline
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Nick Ryakhovski
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0

Disabling the TPM module in BIOS system worked for me.

karel
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Wiem Fourati
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I have been using Ubuntu for the last 2 years. I faced the issue of the freezing screen after unlocking the laptop. I tried various steps but nothing works for very long.
Upgrading to SSD (solid-state drive) from a normal mechanical hard drive (HDD) has solved this problem for me. It has been 8 months, I didn't face any problems so far.

Vineet Singh
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I am having this issue for quite some years as well. It is not nvidia related (as some people state) as I use Intel builtin graphics. I've already had this issue on Ubuntu 18.04. Usually my notebook is docked via USB-C to an external monitor and Ethernet-NIC, wifi stays on. My gdm3 login screen locks now and then when I undock my notebook and close the lid (or other way round). After opening the lid I neither can type in a password nor does fingerprint unlocking work.

I suspect network share automounter. Prior 20.04 I used autofs and these freezes happend very often. I changed the automount-scripts to detect my file server and things got better. With 20.04 I am using systemd to automount and things got even better. But still from time to time the login window just freezes. When I am still at home connected to my home wifi sometimes the login screen unfreezes after a couple of minutes - it looks like it needs some time for a timeout to hit.

If the freeze doesn't go away I switch to a terminal console and issue

export DISPLAY=:0.0
killall -3 gnome-shell

But very often that doesn't help anymore so I need to power down the notebook.

I've filed bug reports some years ago without any progress. Launchpad Gnome upstream

spi
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