[lug] screen frequently blacks out on recent update...

Tue Jan 22 09:00:13 MST 2019

Could it be something to do with the power management settings?

-----Original Message-----
From: D. Stimits <stimits at comcast.net>
To: Boulder (Colorado) Linux Users Group -- General Mailing List <lug at lug.boulder.co.us>
Sent: Tue, Jan 22, 2019 8:38 am
Subject: Re: [lug] screen frequently blacks out on recent update...

On January 22, 2019 at 5:15 AM Bear Giles <bgiles at coyotesong.com> wrote: 

Has anyone else seen their screen frequently blank out for 1-2 seconds after a recent update? This is happening on both an Ubuntu 18.10 and CentOS system. I don't think it's a hardware issue since it's two different systems, two different monitors, and both have worked fine until the last few days.
I've had this occur when the power supply in the monitor was going bad. I've also had this occur when the cables needed reseating. I also replaced what I believe was a bad video card once for this (the problem went away for a while). I also did not believe it was the monitor because it affected both monitors, but if you have more than one, and hot plug detects one go out and back in, they both blink as it reconfigures. More often it has been the power supply going out (I've replaced power supplies within a couple of different monitors...apparently this is more common than it might appear). Perhaps the update was just coincidental.

Both are running Gnome.
(BTW I never managed to fix Gnome under 18.04. I eventually updated to 18.10 and it now works... but oddly I still get the Kubuntu logo when I'm prompted for the hardware decryption password.)
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