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I am on Ubuntu 20.04. Whenever I try to boot up my computer I get nothing only black screen. If I press ESC, then I can see only /dev/sda2 clean, etc. Nothing else. It looks like there is no GUI on it.

I pressed CtrlAltf5 to enter a tty and logged in. Now when I try to install a GUI I get dependencies error. But when I install something else it was doing fine, e.g., Aptitude: sudo apt install aptitude was just installed without any error.

The exact error message while installing gnome was:

 depend on gnome-setting-daemon (>= 3.24) but it's not going to be installed. 
  depend on gnome-shell (>= 3.19.92) but it's not going to be installed.

I don't know why I cannot I install gnome.

muru
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Ferry
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  • If you want to install gnome with gdm3 then you can install tasksel sudo apt install tasksel and sudo tasksel install ubuntu-desktop – Error404 Oct 28 '21 at 09:35
  • What OS & release are you using? From the versions mentioned it looks like bionic or 18.04; but it's best if we're told & not guessing. I'd sudo apt update & read the output there looking for clues (warnings, errors, missing lines etc) as the package is available gnome-shell | 3.28.4-0ubuntu18.04.7 | bionic-updates | source, amd64, arm64, armhf, i386, ppc64el, s390x but again as we don't know your release; only you can interpret issues correctly. – guiverc Oct 28 '21 at 09:40
  • @Algnis : tasksel installed properly but when I tried to install ubuntu-desktop with that command, got error message "tasksel: apt-get failed (100)" Any advise? thanks. – Ferry Oct 29 '21 at 01:29
  • @guiverc : I'm using Ubuntu 20.04.3 LTS, Release 20.04, Codename focal. Tried sudo apt update and there no warning at all (reading, building, state informatin done). I just buy this pc for a week and before no problem at all to login to ubuntu.

    I tried to download gnome-shell with sudo apt install gnome-shell: depends: evolution-data-server (>=3.33.1) but it's not going to be installed. gnome-settings-daemon (>=3.16.0) libpulse-mainloop-glib0 (>=13)

    recommends: gdm3 (>= 3.10.0.1-3) gnome-control-center (>=1:3.25.2) ubuntu session and gnome-session not going to be installed

     – Ferry Oct 29 '21 at 01:34
  • Please amend your question and add additional details there; comments can be deleted. Your question mentions no specific release; only package rules.. Your use of tags are also unclear; as Ubuntu Server doesn't use gdm3 or GNOME - they're desktop packages. – guiverc Oct 29 '21 at 01:53
  • @Ferry I can not give a proper advice but if you don't want your machine to be useless you can install some other desktop environnt other then gnome , For eg install LXQT , I also suffered the same problem and know how it feels to have LXQT on a 2GB ubuntu installation , bit still it is better than having no gui at all – Error404 Oct 29 '21 at 01:57
  • oh sorry, I'm still new and try to learn linux so that's why my explanation not really good. so the problem is I can't go to the GUI when I start my pc server and it's stuck in the black screen with the ""/dev/sda2: clean, xxx/xxx files, xxx/xxx blocks and can't login" message error.

    @Algnis how to install LXQT, could you help to teach me how to download it and use it? thanks

     – Ferry Oct 29 '21 at 02:16
  • @Ferry Well you can install it by , sudo tasksel install lubuntu-desktop or sudo apt install LXQT* – Error404 Oct 29 '21 at 02:24
  • @Ferry don't use pc server , as it is a desktop installation you could not say it as server , Server is something else then this – Error404 Oct 29 '21 at 02:27
  • Or let me tell you a cool thing sudo tasksel try this out – Error404 Oct 29 '21 at 02:29
  • @Algnis approve your edit, thanks. tried to download lubuntu-desktop but failed also "tasksel: apt-get failed (100)"

    while LXQT* also failed with notification: Depends: pavucontrol-qt pavucontrol but it's not going to be installed

    Recommends: quassel, quassel-client, hexchat, irssi, weechat but it's not going to be installed

    lxqt-build-tools: depends: libglib2.0-dev (>= 2.5.0) qttools5-dev but it's not going to be installed..

    this problem makes me stress :(

     – Ferry Oct 29 '21 at 02:41
  • All users of this site can edit their own questions; @Algnis if you're using Lubuntu with 2GB of RAM, ensure you have swap enabled (https://discourse.lubuntu.me/t/how-to-create-a-swapfile-in-lubuntu-20-04-20-10/1959 or https://askubuntu.com/questions/1274118/why-lubuntu-20-04-is-running-slow-when-i-use-opera-or-libreoffice) Lubuntu is a 'universe' or community package; it requires 'universe' enabled; some install media doesn't enable it by default https://askubuntu.com/questions/148638/how-do-i-enable-the-universe-repository – guiverc Oct 29 '21 at 02:41
  • Does your hardware meet the minimum specs for GNOME? esp. graphic requirements (eg. 3D Acceleration Capable Videocard with at least 256 MB); many servers do not meet those requirements - https://help.ubuntu.com/community/Installation/SystemRequirements but can run lighter desktops successfully. 4GiB is the minimum recommended RAM for GNOME – guiverc Oct 29 '21 at 02:44
  • Ferry , if you can't do this then Reinstalling ubuntu is the only choice left . :/ o_O – Error404 Oct 29 '21 at 02:51
  • I used Xeon-R E2224G, RAM 16GB, Mesa Intel UHD Graphics P630, SSD 512GB. I think the spec is quite enough right? @Algnis is it possible to reinstalling with flashdisk but maintain the program and the data? because it'll take a time to install the apps again. thanks before guys – Ferry Oct 29 '21 at 03:21
  • Well it is a good specs , and you can install whithout losing your home directory , but apps may not be saved – Error404 Oct 29 '21 at 03:51

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