** Tags added: cscc
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https://bugs.launchpad.net/bugs/1801747
Title:
External display not recognized, internal one goes to black
Status in gdm3 package in Ubuntu:
Fix
** Changed in: gdm3 (Ubuntu)
Status: Incomplete => Fix Released
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
** Changed in: xorg-server (Ubuntu)
Status: Incomplete => Fix Released
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Le 26/11/2018 à 09:49, Daniel van Vugt a écrit :
> tootai,
Hi Daniel
>
> Could you please update the machine? This looks a little like a bug that
> was fixed recently.
Indeed, it's now OK.
>
> When done, please run:
>
>dpkg -l > allpackages.txt
>
> and attach the resulting
I would recommend everyone other than tootai should open their own bugs
so as to not confuse the discussion here.
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https://bugs.launchpad.net/bugs/1801747
Title:
External
tootai,
Could you please update the machine? This looks a little like a bug that
was fixed recently.
When done, please run:
dpkg -l > allpackages.txt
and attach the resulting 'allpackages.txt'.
** Changed in: gdm3 (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu)
Hi ! I can confirm this problem.
I just upgraded 1.04 to 18.10. I got two monitor connected on motherboard. One
in VGA, the other on hdmi.
Both screens works until i log in. After this, the vga screen become black and
display nothing.
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More infos. I installed the notebook from scratch with a 16.04.2 image
and update to latest 16.04 packages which installed 4.15.0-38 kernel.
The laptop has the correct behavior, without entering settings I can
switch/duplicate displays with the fn key.
So original problem seems not related to
** Changed in: gdm3 (Ubuntu)
Status: Incomplete => New
** Changed in: linux (Ubuntu)
Status: Incomplete => New
** Changed in: xorg-server (Ubuntu)
Status: Incomplete => New
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Ubuntu 18.10 does have the same problem, Ubuntu 16.04.2 has *NO*
problem. From where could I get an 4.4 kernel for 18.04 for testing
purpose ?
Other infos: when I check in systems, it show me 3 display despite the
fact that only 2 are connected:
1. internal display
2. unknown display with
Also, do you think this might be bug 1723025?
** Also affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gdm3 (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: xorg-server (Ubuntu)
This may be a regression, please try older kernels like v4.4.
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Title:
External display not recognized, internal one goes to black
The machine seems to have an Intel CPU/GPU from 2009, which makes me
think this might be related somehow to bug 1727356. Can you please try
booting Ubuntu 18.10 as a test?
http://releases.ubuntu.com/18.10/
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** Tags added: multimonitor
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Title:
External display not recognized, internal one goes to black
Status in linux package in Ubuntu:
Behavior is different, Ican't see the image on one or the other display,
system now recognize the second screen but as soon as I switch the
screens keyboard freezes, mouse icon react but no button working, have
to switch off the computer with the on/off button :(
Daniel
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Err: to read is "I can see the image on one or the other display"
** Changed in: xorg-server (Ubuntu)
Status: New => Confirmed
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Tags added: kernel-bug-exists-upstream
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Title:
External display not recognized, internal one goes to black
Status in linux
Hi Cristian. No update/upgrade, straight HDD format + new install of
Ubuntu. I will test the latest kernel.
Thanks for your support
Daniel
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Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.19
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