Losing laptop display by suspend.sh (sleep)

[houndstooth]

Noticing on just one laptop while attached to an external monitor running /etc/acpi/actions/suspend.sh permanently turns off the laptop monitor in spite of being on in lxrandr.

Is there a way to get the internal display on again without rebooting?

[Marv]

A step short of rebooting, first try running restartwm in terminal. If that does it for you, there is a line about 5 lines from the end of the suspend.sh script where that could be uncommented. Simple things first...

[houndstooth]

@Marv pardon, I should have prefaced by stating a reboot without knowing the issue is necessary.

restartwm does not fix it.

I run the script, the laptop monitor blinks out. The 1st time it happened I was scared it failed, debating whether I wanted to continue using the device sans monitor. Thankfully a reboot brought it back.

[MochiMoppel]

Noticing on just one laptop while attached to an external monitor running /etc/acpi/actions/suspend.sh permanently turns off the laptop monitor in spite of being on in lxrandr.

Just to be clear: Your external monitor wakes up normally while your laptop display stays off?
Please run the xrandr command in a terminal window and post the output. Run this command before and after the suspend period. If the output is different (it probably is not), then post both outputs, otherwise the output after the suspend would be sufficient.

[houndstooth]

Just to be clear: Your external monitor wakes up normally while your laptop display stays off?

Yes

Please run the xrandr command in a terminal window and post the output. Run this command before and after the suspend period. If the output is different (it probably is not), then post both outputs, otherwise the output after the suspend would be sufficient.

The problem is intermittent, fixed by reboot. I will come back to this post when it happens again.

[houndstooth]

@MochiMoppel after losing LVDS1 with suspend.sh:

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root# xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 173mm
   1366x768      60.36*+
   1360x768      59.80    59.96  

   1280x720      60.00  

   1024x768      60.00  

   1024x576      60.00  

   960x540       60.00  

   800x600       60.32    56.25  

   864x486       60.00  

   640x480       59.94  

   720x405       60.00  

   680x384       60.00  

   640x360       60.00  

DP1 disconnected (normal left inverted right x axis y axis)
VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 527mm x 296mm
   1920x1080     74.97*   60.00  

   1680x1050     74.89    59.95  

   1680x945      60.02  

   1400x1050     74.87    59.98  

   1600x900      60.00  

   1280x1024     75.02    60.02  

   1440x900      74.98    59.89  

   1280x960      60.00  

   1366x768      59.79  

   1360x768      60.02  

   1280x800      74.93    59.81  

   1152x864      75.00  

   1280x768      74.89    59.87  

   1280x720      60.00  

   1024x768      75.08    70.07    60.00  

   1024x576      59.97  

   832x624       74.55  

   800x600       72.19    75.00    60.32    56.25  gruen
   848x480       60.00  

   640x480       75.00    72.81    66.67    60.00  

   720x400       70.08  

VIRTUAL1 disconnected (normal left inverted right x axis y axis)
root# 

Laptop LCD Monitor is off.

[MochiMoppel]

@houndstooth Looks normal to me.
Try to "kick-start" the laptop display with

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xrandr --output LVDS1 --mode 1366x768 --rate 60.36

[houndstooth]

@houndstooth Looks normal to me.
Try to "kick-start" the laptop display with

Code: Select all

xrandr --output LVDS1 --mode 1366x768 --rate 60.36

@MochiMoppel it only happens on one device & intermittently. When I posted that, restarting X returned both displays, but it does not happen every time.

When a monitor blinks out it seems like a hardware failure.

I will try your kickstart when it happens again.

[houndstooth]

@MochiMoppel no dice, kickstart does not work.

(trigger) My computers do not suspend in Puppy without this command sequence:

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awk '/enabled/{print $1}' /proc/acpi/wakeup | while read a
do
echo "$a" > /proc/acpi/wakeup

1. Fossapup

2. both monitors on

3. NOT executing the wakeup sequence prior

4. executing suspend.sh in /etc/acpi/actions

5. laptop LCD (1366x768) turns off

The only way I know to turn the laptop LCD back on is to reboot.

It might still work if I had remembered to execute the wakeup sequence prior (next test).