x11: Primary monitor goes black randomly

[Rares Vernica]

Thanks for the suggestions. I tried both, but they did not help. Here is
what I have:

> xset q
Keyboard Control:
  auto repeat:  on    key click percent:  0    LED mask:  00000002
  XKB indicators:
    00: Caps Lock:   off    01: Num Lock:    on     02: Scroll Lock: off
    03: Shift Lock:  off    04: Group 2:     off    05: Mouse Keys:  off
  auto repeat delay:  500    repeat rate:  20
  auto repeating keys:  00feffffdffffbbf
                        fadfffffffdfe5ef
                        ffffffffffffffff
                        ffffffffffffffff
  bell percent:  50    bell pitch:  400    bell duration:  100
Pointer Control:
  acceleration:  2/1    threshold:  4
Screen Saver:
  prefer blanking:  yes    allow exposures:  yes
  timeout:  0    cycle:  600
Colors:
  default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
Font Path:

/usr/local/share/fonts/misc/,/usr/local/share/fonts/TTF/,/usr/local/share/fonts/OTF/,/usr/local/share/fonts/Type1/,/usr/local/share/fonts/100dpi/,/usr/local/share/fonts/75dpi/,built-ins
DPMS (Energy Star):
  Standby: 600    Suspend: 600    Off: 600
  DPMS is Disabled
Font cache:
  Server does not have the FontCache Extension

Thanks!
Rares

On Thu, Jul 14, 2016 at 11:54 AM, Charles W. Ross <cwr at core.cwross.com>
wrote:

> Try disabling the screen saver and/or DPMS (energy saver) via the xset
> command.
>
> To see what your current settings are, type 'xset q'
>
> To disable DPMS, type 'xset -dpms'
>
> To disable the screen saver, type 'xset s off'
>
> Note: these settings will not persist after you quit your current
> session or reboot the machine.
>
> Hope this gives you a starting point.
>
> Charlie
>
> On Thu, Jul 14, 2016, at 12:28, Rares Vernica wrote:
> > Hello,
> >
> > I am using an HP Elitebook 2560p which has an integrated Intel video
> > card.
> > I use two external monitors, one connected on the DisplayPort as primary
> > and one on the VGA port as secondary. I am not using the built-in
> > display.
> >
> > I use x11 with xfce and the Intel driver. It all works fine, except that
> > the the primary monitor (on the DisplayPort) goes black at random times.
> > Once black, the monitor reports no signal and goes on stand by. It does
> > not
> > resume working if I move the mouse or type on the keyboard. One way I
> > managed to recover it is to turn the display off with xrandr and then
> > back
> > on.
> >
> > I reported a bug on FreeBSD but I wonder if there are other things I can
> > try or other workarounds less intrusive than the xrandr off/on one that I
> > am using. See here for the bug report, log output, and version info:
> > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210929
> >
> > Thanks!
> > Rares
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