On Fri, 27 Apr 2007, Sascha Heid wrote: > im using Ubuntu Feisty (Kernel 2.6.20-15) now but IIRC i had the same > problem in gentoo. > Exactly 1m after the Screen of my thinkpad X60T goes into standby it > will come back up again. Ubuntu has this onscreen brightness control > thingie and it will show up as well then. I have no idea how ibm-acpi could do this on its own. It has *no* timers other than the fan watchdog. OTOH, something in userspace certainly can do it through ibm-acpi... *HOWEVER*, new enough ibm-acpi *is* aware of backlight/framebuffer power management. If something manages to notify its backlight device that the display is to be powered off, it will dim it to maximum and if it is notified that the display is to be turned on again, it will restore the previous brightness. This would cause a ThinkPad CMOS OSD watched to report a brightness change when the display is unblanked, but this (and ibm-acpi doing something) would be just a side-effect of something else entirely telling the kernel to unblank the device. > Unloading ibm_acpi fixed the problem, of course im unable to change > the screen brightness without it. > > Are there any know issues about this? None, AFAIK. I always ask people to remove the ACPI "video" module on any *60 that shows any sort of video weirdness to check if it isn't causing issues, though. You might want to double-check that possibility. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
