https://bugzilla.kernel.org/show_bug.cgi?id=62881

--- Comment #10 from Can Kavaklıoğlu <[email protected]> ---
I attached the test script I have used to test this problem. As GiulioDP
mentions, all is fine before the suspend but problem appears after suspend.
More detailed:

- bash brightness_test.sh
- screen goes full brightness, 50% brightness, 25% brightness
- copy log file as test_output_before_resume

- suspend with pm-suspend command
- wait a second, resume by pressing a key

- bash brigthness_test.sh
- screen goes full brightness, 0% brightness
- manually increase brightness to full brightness
- copy log file as test_output_after_resume

Thanks.

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