[Libdlo] Unknown EDID version 0 error with DL-160 chipset

[Jason Kim]

I have USB-VGA dongle with DL-160 chipset.  I'm currently testing it on
Ubuntu 8.10.

After I downloaded/installed udlfb-0.2.3 and xf86-video-displaylink-0.3,
"udlfb" creates /dev/fb0 properly when I connect my USB-VGA dongle.

When I start X server however, I keeps getting  "(EE) DL(0): Unknown
EDID version 0" error and X crashes.

I even tried to install libdlo-0.1.0 as mentioned at
http://freedesktop.org/wiki/Software/libdlo, but same result.

Did I miss something?  What is the software required to get the
displaylink chipset working?  Is udlfb and xorg driver enough? Do I have
to also install libdlo? 

Here is my X config and log:

=========
xorg.conf
=========
Section "Device"
        Identifier      "dl0"
        driver          "displaylink"
        Option  "fbdev" "/dev/fb0"
EndSection

Section "Monitor"
        Identifier      "Monitor0"
EndSection

Section "Screen"
        Identifier      "Screen0"
        Device          "dl0"
        Monitor         "Monitor0"
EndSection

Section "ServerLayout"
        Identifier     "dl0"
        Screen      0  "screen0" 0 0
EndSection


=====
...
(II) Loading /usr/lib/xorg/modules/drivers//displaylink_drv.so
(II) Module displaylink: vendor="X.Org Foundation"
	compiled for 1.5.2, module version = 0.0.1
	ABI class: X.Org Video Driver, version 4.1
(II) DL: driver for : displaylink
(II) Primary Device is: PCI 01 at 00:00:0
(WW) Falling back to old probe method for displaylink
(II) Loading sub module "fbdevhw"
(II) LoadModule: "fbdevhw"

(II) Loading /usr/lib/xorg/modules/linux//libfbdevhw.so
(II) Module fbdevhw: vendor="X.Org Foundation"
	compiled for 1.5.2, module version = 0.0.2
	ABI class: X.Org Video Driver, version 4.1
(II) DL(0): using /dev/fb0
(II) resource ranges after probing:
	[0] -1	0	0xffffffff - 0xffffffff (0x1) MX[B]
	[1] -1	0	0x000f0000 - 0x000fffff (0x10000) MX[B]
	[2] -1	0	0x000c0000 - 0x000effff (0x30000) MX[B]
	[3] -1	0	0x00000000 - 0x0009ffff (0xa0000) MX[B]
	[4] -1	0	0xffffffff - 0xffffffff (0x1) MX[B]
	[5] -1	0	0x000f0000 - 0x000fffff (0x10000) MX[B]
	[6] -1	0	0x000c0000 - 0x000effff (0x30000) MX[B]
	[7] -1	0	0x00000000 - 0x0009ffff (0xa0000) MX[B]
	[8] -1	0	0xffffffff - 0xffffffff (0x1) MX[B]
	[9] -1	0	0x000f0000 - 0x000fffff (0x10000) MX[B]
	[10] -1	0	0x000c0000 - 0x000effff (0x30000) MX[B]
	[11] -1	0	0x00000000 - 0x0009ffff (0xa0000) MX[B]
	[12] -1	0	0xffffffff - 0xffffffff (0x1) MX[B]
	[13] -1	0	0x000f0000 - 0x000fffff (0x10000) MX[B]
	[14] -1	0	0x000c0000 - 0x000effff (0x30000) MX[B]
	[15] -1	0	0x00000000 - 0x0009ffff (0xa0000) MX[B]
	[16] -1	0	0xffffffff - 0xffffffff (0x1) MX[B]
	[17] -1	0	0x000f0000 - 0x000fffff (0x10000) MX[B]
	[18] -1	0	0x000c0000 - 0x000effff (0x30000) MX[B]
	[19] -1	0	0x00000000 - 0x0009ffff (0xa0000) MX[B]
	[20] -1	0	0xffffffff - 0xffffffff (0x1) MX[B]
	[21] -1	0	0x000f0000 - 0x000fffff (0x10000) MX[B]
	[22] -1	0	0x000c0000 - 0x000effff (0x30000) MX[B]
	[23] -1	0	0x00000000 - 0x0009ffff (0xa0000) MX[B]
	[24] -1	0	0x0000ffff - 0x0000ffff (0x1) IX[B]
	[25] -1	0	0x00000000 - 0x00000000 (0x1) IX[B]
	[26] -1	0	0x0000ffff - 0x0000ffff (0x1) IX[B]
	[27] -1	0	0x00000000 - 0x00000000 (0x1) IX[B]
	[28] -1	0	0x0000ffff - 0x0000ffff (0x1) IX[B]
	[29] -1	0	0x00000000 - 0x00000000 (0x1) IX[B]
	[30] -1	0	0x0000ffff - 0x0000ffff (0x1) IX[B]
	[31] -1	0	0x00000000 - 0x00000000 (0x1) IX[B]
	[32] -1	0	0x0000ffff - 0x0000ffff (0x1) IX[B]
	[33] -1	0	0x00000000 - 0x00000000 (0x1) IX[B]
	[34] -1	0	0x0000ffff - 0x0000ffff (0x1) IX[B]
	[35] -1	0	0x00000000 - 0x00000000 (0x1) IX[B]
(EE) DL(0): Unknown EDID version 0
(II) DL(0): Creating default Display subsection in Screen section
	"Screen0" for depth/fbbpp 16/16
(==) DL(0): Depth 16, (==) framebuffer bpp 16
(==) DL(0): RGB weight 565
(==) DL(0): Default visual is TrueColor
(==) DL(0): Using gamma correction (1.0, 1.0, 1.0)
(II) DL(0): hardware: HP USB Graphics (video memory: 2560kB)
(**) DL(0): Option "fbdev" "/dev/fb0"
(II) Loading sub module "fb"
(II) LoadModule: "fb"

(II) Loading /usr/lib/xorg/modules//libfb.so
(II) Module fb: vendor="X.Org Foundation"
	compiled for 1.5.2, module version = 1.0.0
	ABI class: X.Org ANSI C Emulation, version 0.4
(II) DL(0): Output HP USB Graphics using monitor section Monitor0
(EE) DL(0): Unknown EDID version 0

Backtrace:
0: X(xf86SigHandler+0x79) [0x80c3019]
1: [0xb7fc6400]
2: X(InitOutput+0x96f) [0x80aac9f]
3: X(main+0x279) [0x8071b19]
4: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7bce685]
5: X [0x8071101]
Saw signal 11.  Server aborting.


Jason

-- 
Jason Kim