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On 2013-11-02T13:13:22+00:00 Wfsb5fcjhg wrote:

Given an nVidia card driving 2 displays (one laptop display, one LCD on
DVI), configured for dual display (over and under), the settings are
correctly enacted when XFCE first starts from boot, but thereafter, if I
suspend the computer and restart, the settings are reset to one monitor
(external display).

I have configured the desired settings both in nVidia's control panel
and in XFCE's settings, but they are ignored.

I suspect that XFCE is incorrectly assuming the external monitor was
just plugged in when the resume happens, and is incorrectly switching to
just that monitor.

This *used to work* back on older versions of XFCE, where XFCE didn't
try to manage multiple monitors, so only the nVidia driver was handling
the issue. Now that XFCE wants to control this, it is broken.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/0

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On 2015-01-31T12:37:01+00:00 Bluesabre-1 wrote:

Can you please test this again with xfce4-settings 4.11.3?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/1

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On 2015-02-01T01:58:18+00:00 Wfsb5fcjhg wrote:

Is there a PPA for Ubuntu that I can get that version from (the latest
in the normal repos is 4.11.2)

With 4.11.2, the internal display is not disabled completely on resume,
but all the programs have been moved to the external display, as if the
system had thought it only had the external display, then added the
internal display before I could unlock the screen.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/2

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On 2015-02-04T02:01:23+00:00 Bluesabre-1 wrote:

You can get the latest git snapshot (4.11.3 + fixes) here:

https://launchpad.net/~xubuntu-dev/+archive/ubuntu/xubuntu-staging

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/3

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On 2015-02-16T23:53:15+00:00 Wfsb5fcjhg wrote:

Added the PPA, updated and upgraded XFCE.

The look of the screen setup tool has changed. Unfortunately, the
behavior has not.

Setting up the 2 displays (external and internal as over/under), close
the laptop lid to suspend, and opening the laptop lid once suspended
causes the internal display to be disabled, and only the external
display to be used. Re-enabling the internal display places it at a
weird location relative to the external display (right and a little
above) rather than restoring the original over/under setting.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/4

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On 2015-12-01T15:00:43+00:00 E8hffff-1 wrote:

CONFIRMED.  This happens to me on Archlinux using Intel HD 6000 GPU,
with dual monitors, one above another.

I'm in the process of setting up an xorg.conf to see if that helps, but
Intel GFX usually don't need xorg.conf files.

When the monitors resume I can get XFCE to show a monitor config but the
arrangement is now shown in the dialogue options to suit my liking.
Would be nice if the system just remembered my settings.

I might make a youtube showing the problem.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/5

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On 2016-05-18T17:00:02+00:00 Peter20 wrote:

Hi! This bug (re)appeared in my freshest Xubuntu! Just upgraded to xenial.
I have "xfce4-settings  4.12.0-2ubuntu1  amd64" (if it matters).

I have 2 displays, one is the laptop's native LVDS1 monitor and other is a 
HDMI1 monitor (Samsung SyncMaster P2450).
In Settings/Display I configured that only the "Samsung" to be used, i.e. the 
"Laptop" be disabled. My settings were accepted, everything worked fine.

(Instead of Light Locker, which seems to be buggy, I use gnome-
screensaver.)

When I minimize the windows (Super+d), bring up the "Log Out" dialog (Alt+F4) 
and choose Suspend, the system goes to suspend, okay. When resuming, instead of 
the HDMI, the LVDS display turns on. Asks for password, and resumes my session 
- on the laptops's display, instead of the hdmi.
When I go to the Settings/Display, I can see that "somebody" enabled the laptop 
display and disabled the hdmi.
When I click on the "use this display" below the samsung, the samsung display 
remains black (off)!
When I click on the same checkbox secondly, then the samsung display switches 
ON! (In each case, a dialog appears to keep or not this configuration.)

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/6

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On 2016-05-18T19:27:50+00:00 Peter20 wrote:

[Please somebody set this bug's status to something other than
"needinfo".. It is not the reporter's turn.. It needs attention from
somebody else that reporters.]

I found that if in Settings/"Session and Startup" I enable to launch 
light-locker and disable to launch gnome-screensaver, and before the (first) 
suspend I issue a locking (Super+L, light-locker) and resume [after which, by 
side-effect, the unused Laptop display's backlight turns on, erroneously - 
perhaps I will report it in a separate issue], then the suspend *works*! I.e. 
after resume from suspend my display settings (which display is enabled and 
which is not) are not corrupted.
(But, at least some time, the mouse pointer got lost.. :( Nightmare feeling..)

(I have - among others - "lightdm-gtk-greeter  2.0.1-2ubuntu4  amd64"
and "light-locker  1.7.0-2ubuntu1  amd64".) (Does it matter?)

So, in short, in the Ubuntu 16.04 (and/or the Xfce4 with it), (among
possibly others) the suspending does not work. At least when there are
multiple monitors, and/or the user uses other UI-locker than light-
locker, and/or the user odes not issue a UI-locking to precede the
suspend.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/7

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On 2017-09-15T13:05:53+00:00 spike speigel wrote:

I'm seeing this with:

Xubuntu 17.10
Dell XPS 13 9360 DE laptop
Intel HD 620 GPU
LG 27UD58P-B External monitor connected via Thunderbolt 3 to Display Port cable

Whenever my system suspends or monitor happens to sleep, stand-by,
whatever, my settings are not saved, and I am forced to reconfigure
everything once again.

xfce4-settings:  4.12.1-1ubuntu1
Linux kernel:  4.13.0-11-generic #12-Ubuntu SMP Tue Sep 12 16:03:57 UTC 2017 
x86_64 x86_64 x86_64 GNU/Linux

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/13

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On 2017-09-16T19:25:22+00:00 spike speigel wrote:

What info is needed?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/14

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On 2017-10-27T18:40:19+00:00 Ap-z wrote:

Similar problem here with XFCE on Gentoo Linux:

The dual head setup of a desktop machine is reset to one mirrored
display just by having the monitors switched off for a while. The
display is usually locked but the system is running and not sleeping or
somehow suspended.

xfce4-session-4.13.0
xfce4-settings-4.13.1
xfconf-4.13.4
xfdesktop-4.13.1
xfwm4-4.13.0-r1

Linux kernel 4.9.58-grsecurity

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/15

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On 2017-12-03T18:34:29+00:00 Rion wrote:

I guess my bug https://bugzilla.xfce.org/show_bug.cgi?id=12463 is
related to this one.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/16

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On 2018-08-21T06:52:38+00:00 Webm-s wrote:

Still have this problem on Arch GNU/Linux:

Kernel: 4.17.14-arch1-1-ARCH

xfce4-session 4.12.1-8
xfce4-settings 4.12.4-1
xfconf 4.12.1-5
xfdesktop 4.12.4-2
xfwm4

I have to log in and out for the monitors to start working again, if I
unplug and replug the docking station (or just a screen w/o docking
station) the monitors will stop working for the rest of that session.
Hitting "enable" in display settings does nothing. Re-plugging cables
does nothing.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1716172/comments/17


** Bug watch added: Xfce Bugzilla #12463
   https://bugzilla.xfce.org/show_bug.cgi?id=12463

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Title:
  Monitor settings are forgotten after external monitor falls asleep and
  then wakes

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