Re: Testers for LCD Panel Self Refresh on laptops with Intel graphics wanted

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Hi,

On 05-02-18 22:45, Dominik 'Rathann' Mierzejewski wrote:
Hello, Hans.

On Thursday, 01 February 2018 at 12:34, Hans de Goede wrote:
[...]
If you can spare 10 minutes, please see my blogpost for how to test
this and send me a mail with the info request in the blogpost:
https://hansdegoede.livejournal.com/18653.html

That's great! However, I'm getting this:

# cat /sys/kernel/debug/dri/0/i915_edp_psr_status
cat: /sys/kernel/debug/dri/0/i915_edp_psr_status: Operation not permitted

as root on my machine. Does that mean it's not supported?

That means you've secure boot enabled so your not allowed
to access anything under /sys/kernel/debug, which is a bit of
a pain really, as there are some useful bits there like the
i915_edp_psr_status but also vga-switcheroo stuff.

Regards,

Hans
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