[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-23 Thread Bug Watch Updater
** Changed in: gdm
   Status: Confirmed => Fix Released

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-22 Thread Daniel van Vugt
Yes it might have been Mesa.

Fortunately we won't need to figure out what fixed it, if the problem
stays fixed.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-22 Thread Rocko
It wasn't due to nvidia-drm.modeset=0. gdm still works with that absent
from the boot parameters.

It could be a fix in gdm3, which is now at 3.27.92-0ubuntu1. But
https://launchpad.net/ubuntu/+source/gdm3/ suggests that was released
over a week ago, and this problem was definitely still present
yesterday.

It could also have been a fix in mesa, which I see has gone from
18.0.0~rc4 to 18.0.0~rc5.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-22 Thread Rocko
It definitely still happened with 3.28.0-1 (I reported that at the
upstream bug, so I'm sure about that). Another change I made was to boot
the kernel with nvidia-drm.modeset=0, but I'm not sure how that would
affect things.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-22 Thread Daniel van Vugt
If you really have encountered a fix then I doubt it happened in:

  https://launchpad.net/ubuntu/+source/mutter/3.28.0-2

More likely it happened in:

  https://launchpad.net/ubuntu/+source/mutter/3.28.0-1

Regardless, a fix is great. If the problem reoccurs then please change
the status back to New.

** Changed in: mutter (Ubuntu)
   Status: New => Fix Released

** Changed in: gdm3 (Ubuntu)
   Status: New => Invalid

** Changed in: nvidia-graphics-drivers-390 (Ubuntu)
   Status: New => Invalid

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-22 Thread Rocko
And I just rebooted and saw the login screen working again on the
primary monitor. Since the previous reboot it looks like mutter upgraded
to 3.28.0-2, so could the fix be in there?

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-22 Thread Rocko
Ok, I've finally got nvidia-driver-390 installed. I still get the black
screen in gdm problem in intel and gdm crashes with a divide-by-zero
error when I tried to boot using nvidia.

But I still don't think this is at all related to the nvidia driver,
because if I purge all the nvidia drivers gdm still gives me a black
screen. Is it possible it's checking the hardware and doing something
weird? Doesn't gnome 3.28 do that so that it can support multiple
graphics cards - I think I read that somewhere?

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-20 Thread Rocko
And finally: I didn't install nvidia-384 because it actually installs
nvidia-graphics-drivers-390 and that was a complete disaster for me
because it didn't work at all with bumblebee.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-20 Thread Daniel van Vugt
I would go further and probably blame gdm3 or mutter. However we assign
the bug to all related packages in the meantime, just so other people
can find it.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-20 Thread Rocko
There hasn't been any feedback from the developers at the upstream bug.
Is there any other information I could provide to help debug this?

Also, I see on my bionic installation that mutter is at 3.28.0-2 but
gdm3 is still at 3.27.92-0ubuntu1. Is there a 3.28 version of gdm that's
coming out soon?

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-20 Thread Rocko
I'll try and describe the gdm login screen behaviour in more detail:

1. With no external monitor, the gdm login screen is shown as expected.
This is true whether I unplug the external monitor after gdm is running
or boot up without it plugged in at all. If I unplug the monitor, it
takes a bit longer than I would expect before I see gdm's login screen,
but it does eventually appear.


2. With an external monitor plugged in, the external monitor works correctly 
(it shows the gdm background) but the laptop monitor shows only a mouse cursor 
(or text cursor when entering a password). The background that it shows is 
whatever the last tty console was showing, so eg if I switch to tty3 and log 
in, then switch back to tty1, I see the mouse cursor and all the text left on 
the screen from tty3. This behaviour occurs on boot and also when I switch 
users or log out, ie whenever gdm's login screen should be visible.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-20 Thread Rocko
nvidia-387 is from the http://ppa.launchpad.net/graphics-
drivers/ppa/ubuntu ppa.

But I'd say that this bug is not at all related to the nvidia module,
because the problem persists when I completely remove all nvidia
packages from the system.

At all times I'm using the i915 module, so it is more likely to be
related to that or the modeset(?) driver than to nvidia.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-20 Thread Daniel van Vugt
Rocko: nvidia-387 doesn't seem to be an official Ubuntu package so we
can't add a task for it.

Are you sure that's not a typo? Maybe nvidia-384?

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-20 Thread Jean-Louis Dupond
having the same issue here with intel/nvidia system but on Nouveau!

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-15 Thread Rocko
It's not necessarily related to nvidia-graphics-drivers-390: I now have
nvidia-387 installed and still experience the problem.

Also, the problem persists if I completely remove all nvidia drivers.

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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[Bug 1754218] Re: [regression] gdm 3.27 shows blank login screen on primary monitor when two monitors are connected on a hybrid intel/nvidia system

2018-03-08 Thread Daniel van Vugt
** Summary changed:

- [regression] gdm 3.27 shows blank login screen on primary monitor when two 
monitors are connected
+ [regression] gdm 3.27 shows blank login screen on primary monitor when two 
monitors are connected on a hybrid intel/nvidia system

** Tags removed: multi-monitor
** Tags added: hybrid multimonitor

** Also affects: nvidia-graphics-drivers-390 (Ubuntu)
   Importance: Undecided
   Status: New

** Also affects: mutter (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
  [regression] gdm 3.27 shows blank login screen on primary monitor when
  two monitors are connected on a hybrid intel/nvidia system

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