[Solved] Login screen different from the one expected

[Leloup]

Bonjour,
After uprgaded Linux Mint Mate 19.3 to 20.3, the home page is different from the one expected.
Home page is:

The expected home image is:

The home page looks like this Ubuntu one. No?

What is wrong?
An idea?
Regards,
Leloup

[SMG]

After uprgaded Linux Mint Mate 19.3 to 20.3, the home page is different from the one expected.

What steps did you use to upgrade? It is not possible to directly upgrade from LM19.3 to LM20.3.

[JerryF]

Please post the results of this command using a Terminal:

Code: Select all

inxi -Fdrxxz

Copy the results from the terminal.

Click the </> button from the mini toolbar above the textbox where you type your reply.

Code tags [code][/code] will be inserted. Place your cursor between the code tags and paste the results of the command between the tags like this: [code]copied results[/code].

[Cosmo.]

BTW: This page is named login screen. Nobody will know, what you mean with home page, confusion is programmed.

[pbear]

FWIW, that's the Ubuntu login screen, except there should be an Ubuntu banner (with logo) towards the bottom of the screen.

[Leloup]

Thank you for your message and help.
I did Linux Mint Mate 19.2 -> 19.3 -> 20 -> 20.3

[Leloup]

Code: Select all

$ inxi -Fdrxx
System:    Host: leloup-VirtualBox Kernel: 5.4.0-117-generic x86_64 bits: 64 compiler: gcc v: 9.4.0 Desktop: MATE 1.26.0 
           wm: marco dm: GDM3 Distro: Linux Mint 20.3 Una base: Ubuntu 20.04 focal 
Machine:   Type: Virtualbox System: innotek product: VirtualBox v: 1.2 serial: <superuser/root required> 
           Chassis: Oracle Corporation type: 1 serial: <superuser/root required> 
           Mobo: Oracle model: VirtualBox v: 1.2 serial: <superuser/root required> BIOS: innotek v: VirtualBox 
           date: 12/01/2006 
CPU:       Topology: Quad Core model: Intel Core i5-2400 bits: 64 type: MCP arch: Sandy Bridge rev: 7 L2 cache: 6144 KiB 
           flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 bogomips: 24881 
           Speed: 3110 MHz min/max: N/A Core speeds (MHz): 1: 3110 2: 3110 3: 3110 4: 3110 
Graphics:  Device-1: VMware SVGA II Adapter driver: vmwgfx v: 2.15.0.0 bus ID: 00:02.0 chip ID: 15ad:0405 
           Display: x11 server: X.Org 1.20.13 driver: vmware unloaded: fbdev,modesetting,vesa compositor: marco 
           resolution: 1920x1095~60Hz 
           OpenGL: renderer: SVGA3D; build v: 2.1 Mesa 21.2.6 direct render: Yes 
Audio:     Device-1: Intel 82801AA AC97 Audio vendor: Dell driver: snd_intel8x0 v: kernel bus ID: 00:05.0 chip ID: 8086:2415 
           Sound Server: ALSA v: k5.4.0-117-generic 
Network:   Device-1: Intel 82540EM Gigabit Ethernet driver: e1000 v: 7.3.21-k8-NAPI port: d020 bus ID: 00:03.0 
           chip ID: 8086:100e 
           IF: enp0s3 state: up speed: 1000 Mbps duplex: full mac: 08:00:27:53:f7:cc 
           Device-2: Intel 82371AB/EB/MB PIIX4 ACPI type: network bridge driver: piix4_smbus v: N/A port: d200 bus ID: 00:07.0 
           chip ID: 8086:7113 
Drives:    Local Storage: total: 24.03 GiB used: 17.15 GiB (71.4%) 
           ID-1: /dev/sda vendor: VirtualBox model: VBOX HARDDISK size: 24.03 GiB speed: 3.0 Gb/s serial: VB78069717-dad978c7 
           Optical-1: /dev/sr0 vendor: VBOX model: CD-ROM rev: 1.0  dev-links: cdrom,dvd 
           Features: speed: 32 multisession: yes audio: yes dvd: yes rw: none state: running 
Partition: ID-1: / size: 21.88 GiB used: 16.90 GiB (77.3%) fs: ext4 dev: /dev/dm-1 
           ID-2: /boot size: 703.5 MiB used: 253.9 MiB (36.1%) fs: ext4 dev: /dev/sda1 
           ID-3: swap-1 size: 980.0 MiB used: 1.8 MiB (0.2%) fs: swap dev: /dev/dm-2 
Sensors:   Message: No sensors data was found. Is sensors configured? 
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http://packages.linuxmint.com una main upstream import backport #id:linuxmint_main
           2: deb http://archive.ubuntu.com/ubuntu focal main restricted universe multiverse
           3: deb http://archive.ubuntu.com/ubuntu focal-updates main restricted universe multiverse
           4: deb http://archive.ubuntu.com/ubuntu focal-backports main restricted universe multiverse
           5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
           6: deb http://archive.canonical.com/ubuntu/ focal partner
Info:      Processes: 226 Uptime: 13m Memory: 1.94 GiB used: 1.10 GiB (57.0%) Init: systemd v: 245 runlevel: 5 Compilers: 
           gcc: 9.4.0 alt: 7/9 Shell: bash v: 5.0.17 running in: mate-terminal inxi: 3.0.38

[Cosmo.]

Your system has 1 major version change in the history; it is likely, that your problem comes from this upgrade.

As this is a virtual machine I recommend to build a new one. Then you can copy all of the needed data (possibly the complete home) from the old to the new one. You can even run both machines side by side, an advantage, that no dual boot configuration can provide.

[SMG]

Linux Mint uses LightDM, but it appears that is not installed. You are using GDM3. Whatever may have been done to remove LightDM may have also been what removed/changed your login screen.

System:
Host: michaou-VirtualBox Kernel: 5.4.0-117-generic x86_64 bits: 64 compiler: gcc v: 9.4.0 Desktop: MATE 1.26.0
wm: marco dm: GDM3 Distro: Linux Mint 20.3 Una base: Ubuntu 20.04 focal

[Jo-con-Ël]

You can check If lightdm is still installed (not removed), just run dpkg -l | grep "lightdm\|slick-greeter". If it is so run sudo dpkg-reconfigure lightdm and choose lightdm when asked to make it your default dm/login window

About gdm3, most probably it was installed as dependency when installing another ubuntu package, maybe gnome/ubuntu desktop. Check desktop installed with ls -l /usr/share/xsessions/. You can just remove gdm3 (apt remove gdm3) or that desktop environment if any.

[pbear]

Leloup, please run aptitude why gdm3 in Terminal. This will tell us which packages depend on gdm3. For comparison, if you were to run aptitude why rsync, the response would be timeshift Depends rsync, because rsync is what Timeshift uses to copy files.

[Leloup]

Code: Select all

$ aptitude why gmd3

E: There is no package called "gmd3".

Code: Select all

$ aptitude why rsync

i timeshift Depend rsync

Code: Select all

/usr/share/xsessions$ ls -l

total 12
-rw-r--r-- 1 root root 8667 août 21 2021 mate.desktop
According to you, from where, I must launch the command

Code: Select all

dpkg -l | grep "lightdm\|slick-greeter"

?
From / no answer
From ~ no answer
$ sudo find -iname lightdm -print
[sudo] Password for leloup :
./etc/init.d/lightdm
./etc/lightdm
./etc/logrotate.d/lightdm
./etc/pam.d/lightdm
./etc/apparmor.d/abstractions/lightdm
./var/lib/lightdm-data/lightdm
./var/lib/lightdm
./var/cache/lightdm
./var/log/lightdm
./usr/sbin/lightdm
./usr/lib/lightdm
./usr/share/bash-completion/completions/lightdm
./usr/share/lightdm
./usr/share/doc/lightdm

[Leloup]

Code: Select all

sudo dpkg-reconfigure lightdm

It fixes the problem.
Do you have any comments?
In the meantime, thank you for your helps.
Regards,
Leloup

[Jo-con-Ël]

This happens when writing codes, you'd better copy and paste codes on terminal.

Code: Select all

$ aptitude why gmd3

E: There is no package called "gmd3".

it is not gmd3 but gdm3

According to you, from where, I must launch the command

Code: Select all

dpkg -l | grep "lightdm\|slick-greeter"

?
From / no answer
From ~ no answer

Try it with sudo in any case, but lightdm is installed so it would trough some result.

As a graphic alternative you can use Synaptic Package Manager to find gdm3 and lightdm were installed and see dependencies (right-click on gdm3>Proprerties>Dependencies> also look on dependents.

[SMG]

Code: Select all

sudo dpkg-reconfigure lightdm

It fixes the problem.
Do you have any comments?

Good to hear it is solved.

My guess would be something did not happen correctly when you upgraded in place from LM19.3 to LM20. No way of knowing at this point in time what might have happened.

[pbear]

Do you have any comments?

My comment is, "Well played, Jo-con-El."