You have been subscribed to a public bug:
On Xubuntu 15.04, when I suspend the machine and resume afterwards, the
screen remains completely white/blank. I can move the mouse cursor, but
I don't see any screen elements. Clicking or wildly pressing keys
doesn't do anything.
I can switch to a different console with Ctrl+Alt+F1 and log in, just
fine.
For this bug report, I have removed all files from /var/log/lightdm,
then rebooted, suspended, resumed, and switched to VT1. Then copied the
/var/log/lightdm files to a different location. See their contents
attached to this bug report.
Other parameters:
- Simply locking and unlocking the screen works, ALTHOUGH I also see the
white screen there at first, and have to click a mouse button for the
login form to show up.
- I'm running a system with a fully encrypted hard-drive and have
configured LightDM to log me in automatically.
- System is up-to-date.
- No experimental packages, although I had an experimental version of
xserver-xorg-video-intel running, but removed it shortly after.
- System is a Thinkpad T450s with Intel HD 5500 graphics.
Hope I didn't forget to mention anything important. If you need more
information or want me to try something, let me know.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
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LightDM (?) blank/white screen after resume from suspend
https://bugs.launchpad.net/bugs/1456531
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