My Screen keeps blanking out! [Solved]

[woodyb12]

Screensaver "turned off". Power settings [on]: Put to sleep=never; switch off after=never

[Nokkaelaein]

@woodyb12 something that caught my eye, you mention screen "blanking out" and so on, but also "I have never met a BIOS that simply shut off a monitor" ... So I'm just making sure (it will help who ever troubleshoots it further) : are you seeing the monitor merely black out, or is the monitor literally shutting off for a moment? Are there perhaps some signs of losing the signal, too, when that happens? Or is the "shut off a monitor" just an expression, there, and it's not literally shutting off when this problem occurs? (In other words, is it more like a screensaver kicking in, no matter whether it is an actual screensaver or not, or is something literally cutting off the video / monitor for a sec?)

[CharlesV]

K.. to help in debugging and ruling them out.... you might try:
1) Set screensaver to 15 min (I know you said it was off, but humor me)
2) Turn power settings (display) to 20 min and then off.

If this changes your 5 min timing, you should be able to tell which one of these is going rogue on you. If it changes nothing, then we can rule these out I think. (I personally would still remove any screen savers as a test.)

[woodyb12]

When I say "blanking out" I mean that my monitor displays this message: Display not connected to [port]. Which means that the video feed from the card is being shut off. Power manager: shut off! Screensaver set to "Activate when idle 300 minutes" "Inhibit screensaver for fullscreen applications" activated!
Enable "Lock Screen"=Off.

[siamhie]

Post the results of "xset q".

Use the </> icon to post it in the code brackets.

[woodyb12]

Xset-q command results:

Code: Select all

  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: Compose:     off    04: Kana:        off    05: Sleep:       off
    06: Suspend:     off    07: Mute:        off    08: Misc:        off
    09: Mail:        off    10: Charging:    off    11: Shift Lock:  off
    12: Group 2:     off    13: Mouse Keys:  off
  auto repeat delay:  500    repeat rate:  20
  auto repeating keys:  00ffffffdffffbbf
                        fadfffefffedffff
                        9fffffffffffffff
                        fff7ffffffffffff
  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:  600    cycle:  600
Colors:
  default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
Font Path:
  /usr/share/fonts/X11/misc,/usr/share/fonts/X11/100dpi/:unscaled,/usr/share/fonts/X11/75dpi/:unscaled,/usr/share/fonts/X11/Type1,/usr/share/fonts/X11/100dpi,/usr/share/fonts/X11/75dpi,built-ins
DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Disabled
woody@mx23:~/Desktop
$ 

[woodyb12]

No change.

[woodyb12]

I turned off "Automatic Updater" on January 31, 2025 due to Timeshift problems. I started updating again on May 26, 2025. I am having problems with Timeshift again; but, I haven't had time to investigate that problem yet. And the screen problem did not exist before then.

[siamhie]

Xset-q command results:

Code: Select all

DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Disabled

OK, we can rule xset out.

Have you tried the suggestion from Charles in post #13 yet?

[woodyb12]

Yes. No change.