Distribution: Debian testing ('etch') Hardware Environment: Thinkpad 600X, Pentium III 650 MHz, 576 MB Software Environment: Fixed DSDT from Bug #4926 Problem Description: S1 ('standby') produces growing color patterns on the screen. They start out as a thin horizontal band across the middle of the screen, and then more lines and dots develop. Steps to reproduce: Boot into X, then echo standby > /sys/power/state The colored patterns grow on the screen. Then press the shift key to wake it up and it eventually returns, and works fine.
BIOS will control the display at S1 and display random patterns like a screen saver. Is this a failure or do you just dislike it?
The patterns don't move around, they just grow and spread over the whole screen (turning it white). Which has two problems: (1) it takes power to display the patterns, defeating the point of S1 and (2) it might burn-in the pattern, or some subset onto the display.
The pattern is showed by BIOS, so it's BIOS related issue to me. does apm work in the system? if it works, try apm 'standby' please.
APM standby, suspend, and hibernate all work perfectly. Though of course I can't use apm standby when using acpi. Is it possible to control the fan using apm? I didn't see anything in the apm 1.2 specification about fans. If it is, then I wouldn't need to use acpi.
The pattern is displayed by BIOS, mark this one as will_not_fix.