** 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:
** 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
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)
I would recommend everyone other than tootai should open their own bugs
so as to not confuse the discussion here.
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Title:
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)
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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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
** Tags added: multimonitor
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Title:
External display not recognized, internal one goes to black
Status in linux package in
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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** Tags added: kernel-bug-exists-upstream
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Title:
External display not recognized, internal one goes to black
Status in
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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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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