colord erros in varlog which causes display to fail

Thank you for taking the time to report this bug and help make Ubuntu better. Unfortunately, we cannot work on this bug because your description didn't include enough information. You may find it helpful to read 'How to report bugs effectively' http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. We'd be grateful if you would then provide a more complete description of the problem.

We have instructions on debugging some types of problems at http://wiki.ubuntu.com/DebuggingProcedures.

At a minimum, we need:
1. The specific steps or actions you took that caused you to encounter the problem.
2. The behavior you expected.
3. The behavior you actually encountered (in as much detail as possible).

Thanks!

Could you give some details on what you mean by 'display to fail'? A screenshot or video could help understanding what you describe

I'm trying to reproduce it again but couldn't find exact same error behavior is quite same. I was facing this problem when, I was trying to connection my Ubuntu machine via xrdp which is installed on VirtualBox on Windows 10 host.

I can see that XRDP login is successful, but rather than landing on Desktop screen I'm landing on a login screen, which says "Authentication is required to create a color managed device". And when I provide credential then it blinks and I see same screen again.

This time I got different error traces than before in /var/syslog. Below are traces:

Some errors related to XRDP:
May 9 13:19:20 KUMAR-PC xrdp[1918]: (1918)(140104060426048)[ERROR] Cannot read private key file /etc/xrdp/key.pem: Permission denied
May 9 13:19:27 KUMAR-PC xrdp-sesman[1869]: (1869)(139642876421440)[ERROR] g_tcp_bind(9, 6010) failed bind IPv6 (errno=98) and IPv4 (errno=22).

Then some segfault in X11 library:
May 9 13:19:29 KUMAR-PC kernel: [ 610.613426] VBoxClient[2010]: segfault at 968 ip 00007f7c21a8c6ad sp 00007fff970e0a20 error 4 in libX11.so.6.3.0[7f7c21a58000+133000]

And finally different set of errors related to gsd-sharing:
May 9 13:19:35 KUMAR-PC gsd-sharing[2190]: Failed to StopUnit service: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit gnome-user-share-webdav.service not loaded.
May 9 13:19:35 KUMAR-PC gsd-sharing[2190]: Failed to StopUnit service: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit rygel.service not loaded.
May 9 13:19:35 KUMAR-PC gsd-sharing[2190]: Failed to StopUnit service: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit gnome-remote-desktop.service not loaded.
May 9 13:19:35 KUMAR-PC gsd-sharing[2190]: Failed to StopUnit service: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit vino-server.service not loaded.
May 9 13:19:35 KUMAR-PC gsd-media-keys[2231]: Unable to inhibit keypresses: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied

Similar gsd-color, related error as before:
May 9 13:19:36 KUMAR-PC gsd-color[2223]: failed to get edid: unable to get EDID for output

Then continuous crashes in X11 and some errors in gsd-color:
May 9 13:19:41 KUMAR-PC kernel: [ 622.713229] VBoxClient[2400]: segfault at 968 ip 00007f7c21a8c6ad sp 00007fff970e0a20 error 4 in libX11.so.6.3.0[7f7c21a58000+133000]
May 9 13:19:46 KUMAR-PC kernel: [ 628.066421] VBoxClient[2407]: segfault at 968 ip 00007f7c21a8c6ad sp 00007fff970e0a20 error 4 in libX11.so.6.3.0[7f7c21a58000+133000]
May 9 13:19:51 KUMAR-PC kernel: [ 633.369511] VBoxClient[2415]: segfault at 968 ip 00007f7c21a8c6ad sp 00007fff970e0a20 error 4 in libX11.so.6.3.0[7f7c21a58000+133000]
May 9 13:19:57 KUMAR-PC kernel: [ 638.761881] VBoxClient[2423]: segfault at 968 ip 00007f7c21a8c6ad sp 00007fff970e0a20 error 4 in libX11.so.6.3.0[7f7c21a58000+133000]
May 9 13:20:01 KUMAR-PC gsd-color[2223]: failed to create device: Timeout was reached
May 9 13:20:01 KUMAR-PC gsd-color[2223]: failed to get devices: Timeout was reached
May 9 13:20:02 KUMAR-PC kernel: [ 644.128581] VBoxClient[2430]: segfault at 968 ip 00007f7c21a8c6ad sp 00007fff970e0a20 error 4 in libX11.so.6.3.0[7f7c21a58000+133000]
May 9 13:20:08 KUMAR-PC ker...

Logs from var/log directory

The log has several entries

VBoxClient[2423]: segfault at 968 ip 00007f7c21a8c6ad sp 00007fff970e0a20 error 4 in libX11.so.6.3.0[7f7c21a58000+133000]

which are followed by colord not handling the error correctly, but looks like the iniail issue is a virtualbox one