sculpsit daenzerm:
> > additionally, i find that when the display blanks (using the fbdev driver,
> > of course) i lose the console totally and can't regain it by any means other
> > than rebooting the machine.
>
> Do you mean the bug that it blanks the screen even when you're in console? You
> should be able to get the display back by switching back to X and having it
> unblank.
nope. switching vts makes no difference. i can experiment with this more if
you like.
> > one thing i don't understand is why, when the fbdev driver uses the
> > "default" mode, it *still* queries the framebuffer and then sets it
> > explicitly. if it just reused the existing settings, for instance, i could
> > use offb (which is readonly and doesn't support being set explicitly) to run
> > x.
>
> It has to query the framebuffer device to fake an XFree86 mode which is then
> used like a user- or pre-defined mode (thus the mode setting).
>
> It should work with offb though, all it really needs there is the resolution
> and depth/bpp which even offb should report correctly. Or doesn't offb just
> ignore mode settings?
unfortunately not: it comes up with an error. it does report the resolution
and depth fine but the timings are made up. here's the relevant part of the
x server output when trying to run on offb:
(**) FBDev(0): claimed PCI slot 0:16:0
(II) FBDev(0): using default device
(**) FBDev(0): Depth 24, (--) framebuffer bpp 32
(==) FBDev(0): RGB weight 888
(==) FBDev(0): Default visual is TrueColor
(==) FBDev(0): Using gamma correction (1.0, 1.0, 1.0)
(II) FBDev(0): Hardware: OFfb ATY,Rage12 (vidmem: 2100k)
(==) FBDev(0): Option ShadowFB is on
(II) FBDev(0): Checking Modes against framebuffer device...
(II) FBDev(0): mode "1280x1024" test failed
(II) FBDev(0): Checking Modes against monitor...
(--) FBDev(0): Virtual size is 1600x1200 (pitch 1600)
(**) FBDev(0): Built-in mode "current": 100.0 MHz, 61.0 kHz, 49.2 Hz
(++) FBDev(0): DPI set to (100, 100)
(II) Loading /usr/X11R6/lib/modules/libfb.a
(II) Module fb: vendor="The XFree86 Project"
compiled for 4.0.1f, module version = 1.0.0
(II) Loading /usr/X11R6/lib/modules/libshadowfb.a
(II) Module shadowfb: vendor="The XFree86 Project"
compiled for 4.0.1f, module version = 1.0.0
(--) Depth 24 pixmap format is 32 bpp
FBIOPUT_VSCREENINFO: Invalid argument
Fatal server error:
AddScreen/ScreenInit failed for driver 0
the "FBIOPUT_VSCREENINFO: Invalid argument" is the same message i get when
trying to use fbset to change resolution etc under offb.
--
dog
