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#1 2020-12-31 10:41:39

d.ALT
Member
Registered: 2019-05-10
Posts: 23

nVIDIA (HDMI) does NOT wakeup after long time

I have GTX1660S and KDE. Using latest nvidia and linux.
As in title, it happens (almost) always when I let my PC in idle (not suspended) over night and also when is in idle for about some hours (let's say 4 hours).
When I turn on the TV, I get no signal (even if I press keys in the keyboard).
Tested with both SDDM lockscreen enabled and disabled.
Tested with both leaving the TV turned on and also turning it off.
I can wake-up the GPU with these two workarounds:

  • Suspend the PC using keycombo in my keyboard and then resume from suspension
    or

  • Login via ssh and then change resolution with xrandr

    $ export DISPLAY=:0
    $ xrandr --output HDMI-0 --mode 1920x1080 --rate 60 && xrandr --output HDMI-0 --mode 3840x2160 --rate 60

Is the only way to completely disable DMPS?
Must I have a xorg.conf file to set it off?

$ xset q
Keyboard Control:
  auto repeat:  on    key click percent:  0    LED mask:  00000000
  XKB indicators:
    00: Caps Lock:   off    01: Num Lock:    off    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:  600    repeat rate:  25
  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:  0    cycle:  600
Colors:
  default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
Font Path:
  built-ins
DPMS (Energy Star):
  Standby: 600    Suspend: 900    Off: 1200
  DPMS is Enabled
  Monitor is On

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#2 2021-01-08 15:57:29

magoscuro
Member
Registered: 2017-10-09
Posts: 2

Re: nVIDIA (HDMI) does NOT wakeup after long time

d.ALT, same problem here: I have 2 monitors connected to the card.

DVI Monitor recover from sleep OK
HDMI Monitor will not recover from suspend, ALT+CTR+F2 and the ALT+CTRL+F1 will recover HDMI monitor.

magoscuro

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#3 2021-01-10 19:10:46

d.ALT
Member
Registered: 2019-05-10
Posts: 23

Re: nVIDIA (HDMI) does NOT wakeup after long time

This DOES NOT solve the problem:

$ cat /etc/X11/xorg.conf.d/10-monitor.conf 
Section "Extensions"
    Option      "DPMS" "Disable"
EndSection

Any other ideas?

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#4 2021-01-13 03:35:01

magoscuro
Member
Registered: 2017-10-09
Posts: 2

Re: nVIDIA (HDMI) does NOT wakeup after long time

I replaced HDMI cable with DisplaPort and now is working OK.

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