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pLumo
Asked: 2019-09-04 04:27:20 +0800 CST

Slow switching between Users / TTY using HDMI

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Switching to another already logged in user (Ctrl+Alt+F#) takes a long time (approx. 10 - 20 seconds).

First, the screen turns black, after some seconds the cursor appears, and then after some time the desktop appears. Sometimes the icons and text is scrambled which can be fixed by resetting Gnome (running r from Alt+F2).

How can I eliminate this annoying waiting time ??

I have Nvidia Geforce GTX 1060 TI with current nvidia driver from standard repos.

Same setup using VGA cable works fine, it is the same issue for different monitors (one is Full HD and one is 4K).

I found a similar question, but it is very old and has a different setup and it has no suitable answers.

Installed driver:

nvidia-driver-418:
  Installed: 418.56-0ubuntu1
  Candidate: 418.56-0ubuntu1
  Version table:
 *** 418.56-0ubuntu1 500
        500 http://de.archive.ubuntu.com/ubuntu disco/restricted amd64 Packages
        100 /var/lib/dpkg/status

Output of sudo lshw -C display:

  *-display                 
       description: VGA compatible controller
       product: GP106 [GeForce GTX 1060 6GB]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:144 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:c0000-dffff

This is the output from journalctl -xe when switching: https://pastebin.ubuntu.com/p/9vYPKjG6DJ/

/var/log/Xorg.0.log doesn't print anything when switching.

I did not change anything from default settings regarding graphics.

gdm nvidia display hdmi 19.04

2 Answers

  1. Best Answer

    This issue is totally fixed for me after upgrading to Ubuntu 19.10.
    Not sure, but it might have been related to this issue:

    • 1

  2. From Arch Linux: Slow loading of system icons/slow GDM login

    # gdk-pixbuf-query-loaders --update-cache

    Running the aforementioned command may also fix repeated occurrences of the "Oh no! Something has gone wrong!" error screen and/or very slow loading and login with GDM as described in the following forum thread.

    The above is a tiny fraction of the Arch Linux link and other useful tips / things to try can be found there.

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