On Fri, 2001-10-19 at 20:23, Greg Ward wrote: > for a variety of reasons, I typically run two X servers: :0 on vc 7, > :1 on vc 8. (This is XFree86 4.1.0; Debian package 4.1.0-6; Linux > 2.4.12 with framebuffer device compiled in.) I would like to reduce > the time to switch from VC 7 to 8 -- both servers are running with the > same XF86Config-4, so the modes and timings are (presumably) > identical. It looks as though someone -- either X or the kernel > console driver -- insists on taking things back down to the "ground > state" (the mode the VC was in before X took over, I guess) and then > switching mode back. It takes anywhere from 3 to 20 seconds to switch > between the two X servers. Is it possible to avoid the double mode > switch on changing VCs between two X servers?
No, the X server has to return the hardware to the state it found it in. > Failing that, ISTR reading somewhere that putting the console in > framebuffer mode would help, as long as the console's video mode is the > same as X's. The console's video mode shouldn't matter. What does matter is that the X server uses the framebuffer device interface, otherwise it still has to save and restore the hardware state. If your X driver doesn't support Option "UseFBDev" you're SOL. > Well, even running with the console's 1280x1024 75Hz mode > didn't help, so presumably the timings are not identical to X's > 1280x1024 75 Hz mode. Is it possible to ensure that the console and X > are using the *exact* same timings, Yes, use fbset -x to get an X mode definition. But as I pointed out, it shouldn't matter. The important thing is that the two VCs you want to switch between use the same mode. > and if so will this work -- ie. will switching between X VCs be just like > switching between console VCs in the same mode, ie. more-or-less > instantaneous? It depends on the framebuffer device. If yours doesn't do this, you'll have to hack it. :) -- Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer XFree86 and DRI project member / CS student, Free Software enthusiast _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
