Re: Monitor won't come back from power-saving sleep

[Kynn Jones <kynnjo@gmail.com>]

On Thu, Aug 17, 2017 at 1:14 PM, Kynn Jones <kynnjo@gmail.com> wrote:

I just installed Debian on a (legacy) Optiplex 9010 desktop, and I'm working through some kinks.

The most serious one, by far, is that the monitor won't wake up after it goes goes dark to save power.

Curiously enough, the problem occurs only when X11 is running; otherwise, hitting the shift key on the keyboard brings the monitor right back.

I have tweaked the BIOS settings to enable waking the computer from sleep through USB-connected devices, and also wake-on-lan and wake-on-wlan.

How can I troubleshoot this problem further?

I don't yet understand what was wrong before, but I found that installing xscreensaver, and putting the going to sleep under its control solves (or maybe just circumvents) the problem.

Thanks for the help!