Sorry, I have changed both the computer and the desktop environment since then.
I had work to do and needed reliable settings quickly.
I have achieved this with a Thinkpad and KDE.
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Moreover, never ever give access to your system to an unknown person.
Even if he looks nice and helpful. It is a sane best practice to keep
away from troubles.
Keshara, as a person who is willing to help, you should even not have
asked for it. There are many ways to help him without a shell access
The simple fact to switch to a TTY reactivate the screen. There are also no
issues in other windows managers than Gnome (e.g. Openbox), xrandr works well.
So probably neither an Xorg nor a driver issue.
It seems to be Gnome-related.
** Tags removed: kernel-bug-exists-upstream
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Also note that I had no issue on Ubuntu 12.04, so this is a regression.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-bug-exists-upstream
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I tested with 3.14, and same problem.
But I caught some kernel messages every time I replug the screen:
[ 42.038474] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP,
aborting
[ 57.587925] [drm:intel_dp_aux_native_read] *ERROR* too many retries, giving
up
[ 57.600327] [drm:in
I am not able to provide technical details at this time. This a
functional issue and I don't know what package is involved.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Public bug reported:
On Ubuntu 14.04, the external screen plugged on VGA is detected and get
activated correctly.
However, if I unplug it and then replug it later, it is not detected anymore
and the screen receives no signal.
A way to get it back to work is to reboot or simply suspend the
compu
@Sheldon You are correct, I checked and the driver is still missing.
>From the archive, we can use the firmware file, but not the modules directly.
>We need the source code to recompile it against the current kernel of our
>distro.
** Also affects: linux (Fedora)
Importance: Undecided
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