From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: To: 9fans@cse.psu.edu Subject: Re: [9fans] rotzoomer -- another xscreensaver hack From: "Russ Cox" In-Reply-To: <20030121184247.10149.qmail@g.bio.cse.psu.edu> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Tue, 21 Jan 2003 13:55:02 -0500 Topicbox-Message-UUID: 44cc62d6-eacb-11e9-9e20-41e7f4b1d025 > Let me put in a vote for the opposite sort of thing: using DPMS to powersave > the monitor. every time i have tried to do dpms by the vesa spec, the screens never come back correctly when i turn them back on. the code is in /sys/src/9/pc/vga.c:/^vgablank, but it breaks so many setups that it's not used. some video cards have their own ways to get at dpms (see /sys/src/9/pc/vgasavage.c:/^savageblank, also s3, mga6xx, nvidia) and that seems to work better. it's still not perfect though. mach64xx, for example, doesn't behave right even using the mach64xx-specific blanking. it's just a nightmare. the lcds tend to work better because they have an explicit signal to do blanking rather than infer something from the horizontal and vertical sync pulses. both laptops and digital cards like t2r4 seem to work well.