rcragun

[rcragun]

I finally solved the problem. The system settings dialog for power management wasn’t actually changing the XML file that dictated power management settings.

 

The actual settings to manage the power in XFCE are located here:

/home/[user]/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-power-manager.xml

Opening that file with a text editor, I looked for any instance where the setting didn’t make sense. And, sure enough, there was a problem. On this line, I had a “3” when I should have had a “0.”

<property name="blank-on-ac" type="int" value="3"/>

In this file, “0” means “never,” which would tell the computer to never blank the screen when on AC power. I’m assuming “3” means after 5 minutes. So, despite me using the Power Management interface to tell XFCE to never blank the screen on AC power, that setting did NOT get updated in the actual file that controls this. I changed the value manually in the text editor and restarted my computer.

And, problem solved. NoMachine is no longer freezing up due to XFCE blanking the screen on AC and going into a low power mode.

[rcragun]

Update to my Update: Switching Nvidia drivers didn’t solve it. It took a lot longer to freeze up (several hours this time), but the screen, once again, froze. Back to troubleshooting.

[rcragun]

Update: I changed my Nvidia driver from 535 (the latest, recommended driver that was installed by default) to 470 and the problem went away. Not sure what it is about the latest Nvidia driver but it isn’t playing nice with NoMachine on XFCE.

[rcragun]

I figured I’d try turning off DPMS to see if that was the problem. I restarted lightdm then turned off DPMS manually and it still froze. So, DPMS is not the problem.

[rcragun]

I appreciate your help.

Here are the results of those commands via SSH…

First command with the screen frozen:

$ DISPLAY=:0 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: 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:  no    allow exposures:  no
timeout:  300    cycle:  300
Colors:
default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
Font Path:
/usr/share/fonts/X11/misc,/usr/share/fonts/X11/Type1,built-ins
DPMS (Energy Star):
Standby: 0    Suspend: 0    Off: 0
DPMS is Enabled
Monitor is On

First command with the screen not frozen:

$ DISPLAY=:0 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: 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:  no    allow exposures:  no
timeout:  300    cycle:  300
Colors:
default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
Font Path:
/usr/share/fonts/X11/misc,/usr/share/fonts/X11/Type1,built-ins
DPMS (Energy Star):
Standby: 0    Suspend: 0    Off: 0
DPMS is Enabled
Monitor is On

 

Second command with the screen frozen:

$ DISPLAY=:0 xrandr –verbose
Screen 0: minimum 8 x 8, current 1680 x 1050, maximum 32767 x 32767
DVI-D-0 disconnected primary (normal left inverted right x axis y axis)
Identifier: 0x1bc
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DVI-D
ConnectorNumber: 0
_ConnectorLocation: 0
non-desktop: 0
supported: 0, 1
HDMI-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1bd
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: HDMI
ConnectorNumber: 3
_ConnectorLocation: 3
non-desktop: 0
supported: 0, 1
DP-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1be
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: DisplayPort
supported: DisplayPort
ConnectorType: DisplayPort
ConnectorNumber: 4
_ConnectorLocation: 4
non-desktop: 0
supported: 0, 1
DP-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1bf
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DisplayPort
ConnectorNumber: 4
_ConnectorLocation: 4
non-desktop: 0
supported: 0, 1
DP-2 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c0
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: DisplayPort
supported: DisplayPort
ConnectorType: DisplayPort
ConnectorNumber: 2
_ConnectorLocation: 2
non-desktop: 0
supported: 0, 1
DP-3 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c1
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DisplayPort
ConnectorNumber: 2
_ConnectorLocation: 2
non-desktop: 0
supported: 0, 1
DP-4 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c2
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: DisplayPort
supported: DisplayPort
ConnectorType: DisplayPort
ConnectorNumber: 1
_ConnectorLocation: 1
non-desktop: 0
supported: 0, 1
DP-5 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c3
Timestamp:  2231482
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DisplayPort
ConnectorNumber: 1
_ConnectorLocation: 1
non-desktop: 0
supported: 0, 1

And the second command with the screen not frozen:

$ DISPLAY=:0 xrandr –verbose  
Screen 0: minimum 8 x 8, current 1680 x 1050, maximum 32767 x 32767
DVI-D-0 disconnected primary (normal left inverted right x axis y axis)
Identifier: 0x1bc
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DVI-D
ConnectorNumber: 0
_ConnectorLocation: 0
non-desktop: 0
supported: 0, 1
HDMI-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1bd
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: HDMI
ConnectorNumber: 3
_ConnectorLocation: 3
non-desktop: 0
supported: 0, 1
DP-0 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1be
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: DisplayPort
supported: DisplayPort
ConnectorType: DisplayPort
ConnectorNumber: 4
_ConnectorLocation: 4
non-desktop: 0
supported: 0, 1
DP-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1bf
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DisplayPort
ConnectorNumber: 4
_ConnectorLocation: 4
non-desktop: 0
supported: 0, 1
DP-2 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c0
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: DisplayPort
supported: DisplayPort
ConnectorType: DisplayPort
ConnectorNumber: 2
_ConnectorLocation: 2
non-desktop: 0
supported: 0, 1
DP-3 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c1
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DisplayPort
ConnectorNumber: 2
_ConnectorLocation: 2
non-desktop: 0
supported: 0, 1
DP-4 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c2
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: DisplayPort
supported: DisplayPort
ConnectorType: DisplayPort
ConnectorNumber: 1
_ConnectorLocation: 1
non-desktop: 0
supported: 0, 1
DP-5 disconnected (normal left inverted right x axis y axis)
Identifier: 0x1c3
Timestamp:  86611532
Subpixel:   unknown
Clones:
CRTCs:      0 1 2 3
Transform:  1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
CTM: 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1
CscMatrix: 65536 0 0 0 0 65536 0 0 0 0 65536 0
BorderDimensions: 4
supported: 4
Border: 0 0 0 0
range: (0, 65535)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DisplayPort
ConnectorNumber: 1
_ConnectorLocation: 1
non-desktop: 0
supported: 0, 1

It looks like DPMS is on, which I set to be off in the xorg.conf file. Odd. Not sure why DPMS is on when I specifically set the xorg.conf file to not allow it to turn on. Hmmm… I’m going to play with this. I think I found a way to turn off DPMS. I wonder if I turn that off if it will fix the problem. I will return and report!

As for the previous system – exact same setup – Xubuntu. I had to reformat it because I was playing with some other software on the fileserver and, in the process, screwed up a bunch of stuff. I literally copied my xorg.conf file over from the previous installation. Not sure why it isn’t working this time.

[rcragun]

I do have an NVidia card in the fileserver. I tried adjusting the settings in my xorg.conf file as indicated in the suggested article and it didn’t solve the problem. 🙁

I have just emailed the log files from the server.

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