** Package changed: gnome-control-center (Ubuntu) => xorg-server
(Ubuntu)
** Package changed: xorg-server (Ubuntu) => gdm3 (Ubuntu)
** Also affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1816896
Title:
Laptop (HP EliteBook 9470m, Ivy Bridge) unresponsive after resume
Status in gdm3 package in Ubuntu:
New
Status in xorg-server package in Ubuntu:
New
Bug description:
This problem is new in Ubuntu 18.10; it did not occur with 18.04.
When my laptop, an HP EliteBook 9470m, with Intel Ivy Bridge graphics,
comes out of resume, often the UI is unresponsive. Typically I get a
black screen, a screen with just the GNOME top bar, or what the screen
was showing before the laptop was suspended. The mouse cursor moves
but the UI is unresponsive to input.
If I switch VTs with Ctrl+Alt+F1, the lock screen shows, I can enter
my password and after that my GUI session begins to work again, where
I left off.
The problem appears to increase in frequency when I add external
monitors.
It occurs on every suspend/resume if one or more external monitors
(DisplayPort or VGA) have been used since the laptop was booted, even
if they were present at boot, or subsequently removed.
If an extra monitor was plugged in while the laptop was turned off
(scenario: come home, put laptop in docking station with extra monitor
attached, turn on) then often the UI will still fail to respond after
switching to the lock screen with Ctrl+Alt+F1 and I will need to
reboot the laptop.
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