jessie not working after suspend or hibernate

[AurélieJ]

Hi all!

After suspending or hibernate my jessie 8.5 I cannot log again. I just have a black screen, idem with ctrl+alt+f1.
Does anyone know how I can fix this?
Thanks

Aurélie

[AurélieJ]

Hi!

I think that come from the brightness.
I have no brightness control (fn+f5 or fn+f6 don't work and no brightness control in the menu).

An idea please?

I tried to add acpi_backlight=vendor or acpi_backlight=native and/or acpi_osi= or acpi_osi=Linux, that's not working !

Thanks

Aurélie

[Head_on_a_Stick]

Have you tried:

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video.use_native_backlight=1

Or even:

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video.use_native_backlight=0

[AurélieJ]

Hi !

Thanks. I just tried. It's not working, and with this option my touchscreen is very slow.

Aurélie

[Purgator]

The screen is black as no luminosity or the system freez ?
If you have a shortcut for reboot, use it. Or if you have a shortcut for emulated terminal, use it, then type

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reboot

Or type ctrl + alt + f1, type username, enter, password, enter, then type reboot.

If that not reboot your system is frozen. The issue can be caused by ton of things, i can't really help you for that but maybe try to find on google about your config working on Linux. Mostly graphical chip.


EDIT : You can also just try ctrl + alt + backspace to kill X session and see if you can log in again.

[AurélieJ]

Hi!

I tried ctrl+alt+f1 still a black screen. I can change the keyboard lights, the sound...but not the brightness.
I don't have the directory /sys/class/backlight/intel_backlight
Any idea?

Aurélie

[AurélieJ]

please help!

[bw123]

type ctrl + alt + f1, type username, enter, password, enter, then type reboot.

If you can reboot this way, it's probably a graphics problem. This won't work as regular user, try as root.

[Purgator]

Try what i suggest you or do something similar. We just have to know if you still control the machine. Just notice that i have never seen any laptop totally dark with brightness to 0

[AurélieJ]

I tried ctrl+alt+F1 (trust me it's the first thing that have done ) but i still have a black screen, so i cannot log this way.
After a suspend, i can do absolutely nothing except press the power button for several seconds.

[Purgator]

Ok but even if you have a blackscreen, type your username and password.
You may need to press Num lock, check before if it's needed by going into tty before suspend.

Then you should be able to check if it's a brigtness issue by just doing an action like "touch test", reboot and then see if the file is created.

You should also check the logs.

[AurélieJ]

I tried that at the beginning.
I have tested all the possible options in grub, it's not working. So i am waiting for the kernel 4.8 that must fix the Skylake Power Management.

Aurélie

[AurélieJ]

Still does not work!