Screen goes blank (hibernation?) and never resume normal

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Screen goes blank (hibernation?) and never resume normal

Postby shogun1234 » 2018-09-22 12:40

To be honest, I don't know if this problem belongs to this category or not. Apologize if posting to the wrong place.

My hardware is HP 840 G5 with debian buster/sid. And kernel is 4.17.0-3-amd64.

The problem is each time the screen goes blank (when inactivity for a while), it would never resume back to normal. For instance, pressing any key the screen will come display login screen or my working environment. That looks like hibernation problem to me, but I can be sure, and do not know where to check the log. The only error message I find so far is shown dmesg, and I do not find relevant solution on the internet. Any suggestions for this problem or where to check the log?
Thanks

Code: Select all
[    2.625263] ACPI Error: Needed [Buffer/String/Package], found [Integer]         (ptrval) (20180313/exresop-560)
[    2.625267] ACPI Error: AE_AML_OPERAND_TYPE, While resolving operands for [OpcodeName unavailable] (20180313/dswexec-427)
[    2.625270] ACPI Error: Method parse/execution failed \_SB.WMIV.WVPO, AE_AML_OPERAND_TYPE (20180313/psparse-516)
[    2.625275] ACPI Error: Method parse/execution failed \_SB.WMIV.WMPV, AE_AML_OPERAND_TYPE (20180313/psparse-516)
[    2.625325] input: HP WMI hotkeys as /devices/virtual/input/input22
[    2.630316] ACPI Error: Attempt to CreateField of length zero (20180313/dsopcode-134)
[    2.630320] ACPI Error: Method parse/execution failed \_SB.WMIV.WVPI, AE_AML_OPERAND_VALUE (20180313/psparse-516)
[    2.630328] ACPI Error: Method parse/execution failed \_SB.WMIV.WMPV, AE_AML_OPERAND_VALUE (20180313/psparse-516)
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Re: Screen goes blank (hibernation?) and never resume normal

Postby stevepusser » 2018-09-22 18:17

First, you must determine whether your machine is just turning off the display, suspending to RAM, or actually doing a full hibernate (writing RAM to disk and fully shutting down). Most machines will have some special LED flashing to show that they are in the suspend2ram state.
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Re: Screen goes blank (hibernation?) and never resume normal

Postby shogun1234 » 2018-09-26 20:07

Sorry after checking specs

https://support.hp.com/gb-en/document/c05903000

http://www8.hp.com/h20195/v2/GetPDF.aspx/c05868510.pdf

I still don't find any doc mentioning related info (something like LEDs flashing to indicate turning off display, doing full hibernate and so on). Any places I might be missing or I can also check for such info?

Thanks for your help!
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Re: Screen goes blank (hibernation?) and never resume normal

Postby shogun1234 » 2018-09-26 20:41

https://raspberrypi.stackexchange.com/q ... oing-blank

Not sure. But this one seems to be working.

Adding following commands to .xsessionrc

Code: Select all
# . ~/.profile # source ~/.profile if needed
xset s off         # don't activate screensaver
xset -dpms         # disable DPMS (Energy Star) features.
xset s noblank     # don't blank the video device

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Re: Screen goes blank (hibernation?) and never resume normal

Postby shogun1234 » 2018-09-26 21:11

Mmm ... I probably know what goes wrong. It looks like light-locker was activated with blank theme, resulting in my screen completely becomes blank. Will investigate how to configure /etc/lightdm/lightdm-gtk-greeter.conf checking if that fixes my problem. Sorry for creating confusion.
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