On Fri, Oct 06, 2006 at 04:04:45PM +0200, Rafael J. Wysocki wrote: > On Friday, 6 October 2006 15:54, Stefan Seyfried wrote: > > Hi, > > > > i just had an idea :-) > > > > Is it possible, by using the uswsusp infrastructure, to freeze everything > > but the s2ram process during suspend to RAM? > > Yup. > > > I mean the following: > > > > start s2ram > > - chvt away from X > > - freeze everything else > > - save video state etc. > > - echo mem > /sys/power/state > > ioctl(snapshot_fd, SNAPSHOT_S2RAM, 0)
ok. > > - post video etc. > > - thaw everything else > > > > When doing it this way, nothing could interfere with video POST (on some > > machines the VBE calls take some seconds, the user might already press > > ALT-F7 in the meantime), the whole video resume business would be "almost" > > in-kernel. > > > > Is this a good idea? Is it doable? > > We'll need to save the video state to something like a swap file, but > otherwise it seems doable. Why? We have it in memory like always: save state: vbe_buffer = __save_state(&size); restore: restore_state_from(vbe_buffer); -- Stefan Seyfried QA / R&D Team Mobile Devices | "Any ideas, John?" SUSE LINUX Products GmbH, Nürnberg | "Well, surrounding them's out." ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Suspend-devel mailing list Suspend-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/suspend-devel