On Thu 2010-01-28 00:07:51, Stefan Seyfried wrote: > Hi, > > On Tue, 26 Jan 2010 15:58:43 +0100 Pavel Machek <pavel@xxxxxx> wrote: > > We need vt switch when display is controlled by userland app directly > > accessing hw. It may or may not be X (svgalib anyone?, > > gtk-on-framebuffer? qtopia?). > > anything-on-framebuffer should not be different from plain framebuffer > console, or am I missing something? It is. At least svgalib accesses hw directly. It probably can run even on framebuffer. > > Ideally, userspace should explicitely tell us. KD_KERNEL_GRAPHICS > > console mode? > > > > Plus the switch is needed for any graphics app using fbcon -- I do not > > think we actually save the framebuffer over suspend. (This one should > > probably be fixed). > > Framebuffer should be easy to fix - it works pretty well already > because apparently the fbcon code needs to "shadow buffer" all VT > "windows" anyway - so maybe it's just the issue of doing an additional > "redraw()" somewhere appropriate. Well, for now the "shadow buffer" contains only text, not graphics images. So you'd need to enlarge it a lot. Doable but more than one liner. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
