• Screen stays blank after suspend/sleep/closing lid


    I run Antergos with xfce on a ThinkPad X220.

    A few weeks ago, my screen stopped “waking up” whenever my system goes to sleep (i.e. after the laptop has been idle for too long or whenever I close the lid).

    Any ideas what’s going on?

  • Bump. This is still a constant problem for me.

  • @bfitzpat-math-duke said in Screen stays blank after suspend/sleep/closing lid:

    ThinkPad X220

    Backlight
    Since linux 3.16, some backlight-related kernel parameter defaults have been changed, causing the hardware brightness up/down keys to no longer function automatically. This can be worked around by setting acpi_osi, e.g.

    acpi_osi="!Windows 2012"
    

    in the kernel parameters.
    SOURCE: archwiki

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