I see both.

During power up, the messages appear on displays 1 and 3.
The sign in is on screen 2 (primary display).

The display manager shows 3 displays, but after the apply is selected, only
two work.

Why do they work with Xfce and not with gnome?

Thanks

Peter



On Fri, Oct 27, 2017 at 2:20 AM, Daniel van Vugt <
daniel.van.v...@canonical.com> wrote:

> Thanks. Perhaps we jumped the gun though...
>
> On your login screen do you see two options "Ubuntu" and "Ubuntu on
> Xorg", or only one?
>
> It looks like you might be experiencing a problem with Xorg judging by
> comment #4:
>
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (WW)
> RADEON(0): flip queue failed: Invalid argument
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (WW)
> RADEON(0): Page flip failed: Invalid argument
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (EE)
> RADEON(0): present flip failed
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (WW)
> RADEON(0): flip queue failed: Invalid argument
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (WW)
> RADEON(0): Page flip failed: Invalid argument
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (EE)
> RADEON(0): present flip failed
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (WW)
> RADEON(0): flip queue failed: Invalid argument
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (WW)
> RADEON(0): Page flip failed: Invalid argument
> Oct 23 08:21:34 hostname /usr/lib/gdm3/gdm-x-session[1533]: (EE)
> RADEON(0): present flip failed
>
> ** Bug watch added: GNOME Bug Tracker #789540
>    https://bugzilla.gnome.org/show_bug.cgi?id=789540
>
> ** Also affects: mutter via
>    https://bugzilla.gnome.org/show_bug.cgi?id=789540
>    Importance: Unknown
>        Status: Unknown
>
> ** Also affects: xorg-server (Ubuntu)
>    Importance: Undecided
>        Status: New
>
> ** Changed in: xorg-server (Ubuntu)
>        Status: New => Incomplete
>
> ** Changed in: gnome-shell (Ubuntu)
>        Status: New => Incomplete
>
> ** Changed in: mutter (Ubuntu)
>        Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1725836
>
> Title:
>   No more than 2 displays work simultaneously
>
> Status in Mutter:
>   Unknown
> Status in gnome-shell package in Ubuntu:
>   Incomplete
> Status in mutter package in Ubuntu:
>   Incomplete
> Status in xorg-server package in Ubuntu:
>   Incomplete
>
> Bug description:
>   I have three displays that worked fine in 17.04.
>   Now ith 17.10 I can only use two of them. Either 1 & 2, 1& 3 or 2 2 & 3.
>   All three seem to be properly specified in monitors.xml.
>   The display setup scree detects all three.
>   UBUNTU 17.10
>   AMD PitcairnLSB Version:      core-9.20160110ubuntu5-amd64:
> core-9.20160110ubuntu5-noarch:security-9.20160110ubuntu5-amd64:security-9.
> 20160110ubuntu5-noarch
>   ---
>   ApportVersion: 2.20.7-0ubuntu3
>   Architecture: amd64
>   CurrentDesktop: ubuntu:GNOME
>   DisplayManager: gdm3
>   DistroRelease: Ubuntu 17.10
>   InstallationDate: Installed on 2017-02-23 (242 days ago)
>   InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64
> (20161012.2)
>   Package: mutter
>   PackageArchitecture: amd64
>   ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
>   Tags:  artful
>   Uname: Linux 4.13.0-16-generic x86_64
>   UpgradeStatus: Upgraded to artful on 2017-10-20 (3 days ago)
>   UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
>   _MarkForUpload: True
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/mutter/+bug/1725836/+subscriptions
>

-- 
You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to mutter in Ubuntu.
https://bugs.launchpad.net/bugs/1725836

Title:
  No more than 2 displays work simultaneously

To manage notifications about this bug go to:
https://bugs.launchpad.net/mutter/+bug/1725836/+subscriptions

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