Hi, First: I'm very new to this whole kernel development thing, so applogies in advance for any mistakes. I am submitting a patch that fixes backlight on Toshiba Satellite/Portege Z830. This is a so called "ultrabook" from 2011. It needs the quirk video_disable_backlight_sysfs_if. Without it backlight control breaks after a suspend/resume cycle. However, control via intel_backlight still works. If I disable acpi_video via acpi_backlight=none however, the backlight never turns on at all after resume. Thanks to Hans de Goede for suggesting this fix. Reference: * https://www.spinics.net/lists/platform-driver-x86/msg34394.html Best regards, Arvid Norlander Arvid Norlander (1): ACPI: video: Add Toshiba Satellite/Portege Z830 quirk drivers/acpi/acpi_video.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) base-commit: 1c23f9e627a7b412978b4e852793c5e3c3efc555 -- 2.37.2
