[directfb-users] vesafb and directfb

[Frederick Grim]

Howdy all,
	This question is probably slightly ot here but I imagine someone may 
know.  So I am using one of the epia embedded boards
and trying to get a directfb app that I wrote to work on top of it.  
The thing that has me stumped however is the framebuffer setup.  I am 
using the vesafb driver. If I append the cmdline

	video=vesa:ywrap,mtrr,vram:32

Then I can double buffer in directfb.  However after a time or if I 
make stuff scroll quickly by on the screen the horizontal frequency 
suddenly becomes ~16-17 kHz and the vertical suddenly becomes 33Hz.  So 
obviously this is useless.  If I remove these variables then everything 
works fine except that I have no video memory.

What I have tried:
	Tried (actually thought about) cle266 video driver - don't have that 
kind of chipset.
	Tried changing directfb setting to make it use system memory for the 
back buffer - No luck app refused to show anything
	Tried using various combinations of vesa options

I think either I have configured it incorrectly or I need to sit down 
and write a dfb driver for the trident - is somebody else doing this?

The errors:
	dmesg:
		vesafb: abort, cannot reserve video memory at 0xe1800000
		vesafb: framebuffer at 0xe1800000, mapped to 0xc8000000, size 32768k
		vesafb: mode is 640x480x16, linelength=1280, pages=11
		vesafb: protected mode interface info at c000:7dac
		vesafb: pmi: set display start = c00c7dbc, set palette = c00c7e1f
		vesafb: scrolling: ywrap using protected mode interface, 
yres_virtual=26214
		vesafb: directcolor: size=1:5:5:5, shift=15:10:5:0
		mtrr: base(0xe1800000) is not aligned on a size(0x2000000) boundary
		mtrr: base(0xe1800000) is not aligned on a size(0x1000000) boundary

	

        Config:
                kernel 2.4.23 (clean no extra patches)
                cat /proc/pci
			PCI devices found:
  Bus  0, device   0, function  0:
    Host bridge: VIA Technologies, Inc. VT8601 [Apollo ProMedia] (rev 
5).
      Master Capable.  Latency=8.
      Prefetchable 32 bit memory at 0xd0000000 [0xdfffffff].
  Bus  0, device   1, function  0:
    PCI bridge: VIA Technologies, Inc. VT8601 [Apollo ProMedia AGP] 
(rev 0).
      Master Capable.  No bursts.  Min Gnt=12.
  Bus  0, device  17, function  0:
    ISA bridge: VIA Technologies, Inc. VT8231 [PCI-to-ISA Bridge] (rev 
16).
  Bus  0, device  17, function  1:
    IDE interface: VIA Technologies, Inc. 
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 6).
      Master Capable.  Latency=32.
      I/O at 0xd000 [0xd00f].
  Bus  0, device  17, function  2:
    USB Controller: VIA Technologies, Inc. USB (rev 30).
      IRQ 12.
      Master Capable.  Latency=32.
      I/O at 0xd400 [0xd41f].
  Bus  0, device  17, function  3:
    USB Controller: VIA Technologies, Inc. USB (#2) (rev 30).
      IRQ 12.
      Master Capable.  Latency=32.
      I/O at 0xd800 [0xd81f].
  Bus  0, device  17, function  4:
    Bridge: VIA Technologies, Inc. VT8235 ACPI (rev 16).
  Bus  0, device  17, function  5:
    Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 
Audio Controller (rev 64).
      IRQ 10.
      I/O at 0xdc00 [0xdcff].
      I/O at 0xe000 [0xe003].
      I/O at 0xe400 [0xe403].
  Bus  0, device  18, function  0:
    Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 
81).
      IRQ 11.
      Master Capable.  Latency=32.  Min Gnt=3.Max Lat=8.
      I/O at 0xe800 [0xe8ff].
      Non-prefetchable 32 bit memory at 0xe3000000 [0xe30000ff].
  Bus  1, device   0, function  0:
    VGA compatible controller: Trident Microsystems CyberBlade/i1 (rev 
106).
      IRQ 11.
      Master Capable.  Latency=32.
      Non-prefetchable 32 bit memory at 0xe1800000 [0xe1ffffff].
      Non-prefetchable 32 bit memory at 0xe2000000 [0xe201ffff].
      Non-prefetchable 32 bit memory at 0xe1000000 [0xe17fffff].



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