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I've run into a problem. I'll explain the issue as precise as I can. I run Ubuntu 19.10 on a VirtualBox 6.1.2 version.

The problem looks like this:

When I try to login to my Gnu/Linux account it will appear like it works, but throws me right back to the login screen. The Login credentials are correct, because I can login with "Ubuntu Wayland" with my password and get any sudo rights I need.

AFAIK, I had already this kind of problem in the past, due to a wrongly mounted shared folder between Guest & Host. In that case it was mounted over my home folder. Someone I knew had resolved the problem by mounting my home folder correctly and the shared folder. I guess it is the same problem this time.

I've tried to install a guest addition to get a bidirectional copy and paste function working. When I try to navigate to the /home/user/ directory it tells me that it can not read the content & I have no rights to access it.

I am quite new to Gnu/Linux, thus I need a little help to understand how to use mount from the terminal.

This is the information I get when I use mount in the terminal.

sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) udev on /dev type devtmpfs (rw,nosuid,relatime,size=4047160k,nr_inodes=1011790,mode=755) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000) tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=815328k,mode=755) /dev/mapper/vgubuntu-root on / type ext4 (rw,relatime,errors=remount-ro) securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k) tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755) cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate) cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd) pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime) bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb) systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=33,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=7894) mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime) debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime) hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M) fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime) configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime) /var/lib/snapd/snaps/atom_246.snap on /snap/atom/246 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/stickynotes_627.snap on /snap/stickynotes/627 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/zenkit_5.snap on /snap/zenkit/5 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/telegram-desktop_994.snap on /snap/telegram-desktop/994 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gnome-logs_81.snap on /snap/gnome-logs/81 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/core_8689.snap on /snap/core/8689 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gtk2-common-themes_9.snap on /snap/gtk2-common-themes/9 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gnome-calculator_544.snap on /snap/gnome-calculator/544 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gnome-3-28-1804_116.snap on /snap/gnome-3-28-1804/116 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gtk-common-themes_1440.snap on /snap/gtk-common-themes/1440 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gnome-calculator_501.snap on /snap/gnome-calculator/501 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/core_8592.snap on /snap/core/8592 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/vlc_1397.snap on /snap/vlc/1397 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/chromium-ffmpeg_15.snap on /snap/chromium-ffmpeg/15 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gnome-characters_375.snap on /snap/gnome-characters/375 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gnome-characters_399.snap on /snap/gnome-characters/399 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gnome-3-28-1804_110.snap on /snap/gnome-3-28-1804/110 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/stickynotes_446.snap on /snap/stickynotes/446 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/inkscape_5874.snap on /snap/inkscape/5874 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/core18_1668.snap on /snap/core18/1668 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/telegram-desktop_1038.snap on /snap/telegram-desktop/1038 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/core18_1650.snap on /snap/core18/1650 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/skype_112.snap on /snap/skype/112 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/zenkit_4.snap on /snap/zenkit/4 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/vlc_1049.snap on /snap/vlc/1049 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gtk-common-themes_1353.snap on /snap/gtk-common-themes/1353 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/atom_247.snap on /snap/atom/247 type squashfs (ro,nodev,relatime,x-gdu.hide) /var/lib/snapd/snaps/gtk2-common-themes_5.snap on /snap/gtk2-common-themes/5 type squashfs (ro,nodev,relatime,x-gdu.hide) /dev/sr0 on /media/linux/VBox_GAs_6.1.2 type iso9660 (ro,nosuid,nodev,relatime,nojoliet,check=s,map=n,blocksize=2048,uid=1000,gid=1000,dmode=500,fmode=400,uhelper=udisks2) VMShare on /home/linux type vboxsf (rw,nodev,relatime,iocharset=utf8,uid=0,gid=998,dmode=0770,fmode=0770,tag=VBoxAutomounter) tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=815324k,mode=700,uid=1000,gid=1000) gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)

This is what it gives me, when I grep for vbox.

root@linux-VirtualBox:~# mount | grep vbox VMShare on /home/linux type vboxsf (rw,nodev,relatime,iocharset=utf8,uid=0,gid=998,dmode=0770,fmode=0770,tag=VBoxAutomounter)
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  • Welcome! Please don't post images of text, rather copy paste from the terminal and add it to the post formatting it with the code tool {}. Commented Mar 4, 2020 at 20:32
  • What is the host OS? also I would not mount on /home or /home/user-name. It can cause problems. Instead mount in a sub-directory. Commented Mar 4, 2020 at 21:03
  • The host OS is Win 7 Ultimate. I had no intentions to mount it on /home or /home/user. It was after my attempt to install a guest addition. Commented Mar 4, 2020 at 21:07
  • Is /home/linux your Ubuntu user's home directory? I'd be inclined to put the VBox share under /media and use symlinks from /home/{user} for the relevant directories/folders. Commented Mar 4, 2020 at 22:12
  • Yes, /home/linux is my home directory. Sorry, but how do I achieve these two things. How do I move VMShare which is my shared folder to /media? Is this necessary to create symlinks to another folder rather than use mount to get /snap to mount it on /home/linux? Commented Mar 4, 2020 at 22:24

1 Answer 1

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You don't say what you did, so the following is guesswork.

As you say, you might have messed up your home directory. Impossible to do as you, either used root or sudo. Connect as root and look around. Check the permissions of /home/user. Fix with e.g. chmod u+rwx /home/user. (I think this is unlikely).

Much more likely is breakage of the startup files for your shell, e.g. .profile, .bashrc, and similar. Again as root (as you can't log in, move them to e.g. .profile.save and try loging in again. That should work, but your customizations are gone. For each file check e.g. if . .profile.save (no, the first '.' is no mistake, it asks to read and execute the contents of the file) works. If yes, move back; if no, edit.

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  • I've followed your instruction from the first step and it seems not to be the problem. What I've found out so far is, that all content from my /home/user is now in a different directory /snap. I still don't know how to get it back to /home/user and if there are any necessary steps I've to take for /etc/mstab or /etc/fstab. Commented Mar 4, 2020 at 21:51
  • Strange... no /home/user directory at all? Any other contents of /snap? What is the user, group, permissions on /snap? You can just mv /snap /home/user if it just got moved away and try again... Keep well clear of the stuff you tried to install. it looks like it's installer is very badly done (perhaps even malicious). Commented Mar 5, 2020 at 0:32

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