Distribution: Debian Sarge Hardware Environment: IBM Thinkpad X31 with radeon card Software Environment: kernel 2.6.11r4 Problem Description: When going in S3 mode the display turns off for a second, but then the backlight goes on again. With kernel 2.6.10 the backlight stayed off. Steps to reproduce: Here is the .config file: http://ro-wetter.dyndns.org/pics/.config2
Install vbetool (it's in Sarge now) and run vbetool dpms off at the end of your suspend script.
Thanks, but the backlight still goes on. My script looks like this (hope that's what you meant): ... vbetool dpms off echo -n 3 > /proc/acpi/sleep ...
Please reopen if the problem is still present in recent kernels (2.6.18 and later).
Actually, the problem _is_ present with new kernels, but it is not kernel problem. Either run radeontool to turn off backlight, or better install s2ram from suspend.sf.net.