[Libdlo] module loads and unloads

Wed Jun 24 11:53:24 PDT 2009

Not sure if this will help but here are my ubuntu directions.  Give them 
a scan to see if you missed anything.  Also, no, you shouldn't need libdlo.

http://docs.google.com/View?id=dhp8gjpg_17gqc8fccv

Note: my success was a single usb monitor setup (not dual).  I tested 
with parallels (virtual machine) using a Mimo 710 USB monitor.  Today I 
got a beagleboard in the mail so I'll test and update next week.

Good luck

-- Aaron

Mulchman wrote:
> I apologize in advance if this message appears out of whack with the
> rest of the "module loads and unloads" thread. I've just subscribed to
> the list and am trying to post so that the message appears in that
> thread since I'm getting a similar error message that S.K Han was/is
> getting.
>
> In one of S.K Han's posts in the "module loads and unloads" thread this
> X log snippet was posted:
>
>   
>> -----------log-------------
>> (==) Log file: "/var/log/Xorg.0.log", Time: Fri Jun 12 15:59:22 2009
>> (==) Using config file: "/etc/X11/xorg.conf"
>> (EE) DL(0): Unknown EDID version 162
>> (EE) DL(0): Unknown EDID version 163
>>     
>
>
> I'm getting something similar except the number following "version" is
> zero. Here are the DisplayLink snippets from Xorg.0.log:
>
> -----------Xorg.0.log-------------
>
> (II) Module displaylink: vendor="X.Org Foundation"
>     compiled for 1.6.0, module version = 0.0.1
>     ABI class: X.Org Video Driver, version 5.0
> (II) DL: driver for : displaylink
> (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 1.6.0, module version = 0.0.2
>     ABI class: X.Org Video Driver, version 5.0
> (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    0x0000ffff - 0x0000ffff (0x1) IX[B]
>     [5] -1    0    0x00000000 - 0x00000000 (0x1) IX[B]
> (EE) DL(0): Unknown EDID version 0
> (**) DL(0): Depth 24, (--) framebuffer bpp 32
> (==) DL(0): RGB weight 888
> (==) DL(0): Default visual is TrueColor
> (==) DL(0): Using gamma correction (1.0, 1.0, 1.0)
> (II) DL(0): hardware: Sewell DVI Card (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 1.6.0, module version = 1.0.0
>     ABI class: X.Org ANSI C Emulation, version 0.4
> (II) DL(0): Output Sewell DVI Card using monitor section Monitor2
> (EE) DL(0): Unknown EDID version 0
>
>
>
> My xorg.conf looks like this (only pasting DisplayLink related items):
>
> -----------Xorg.0.log-------------
>
> Section "Device"
>     Identifier    "dl0"
>     driver        "displaylink"
>     Option    "fbdev"    "/dev/fb0"
> EndSection
>
> Section "Screen"
>     Identifier    "Screen2"
>     Device         "dl0"
>     Monitor     "Monitor2"
>     DefaultDepth    24
>     SubSection "Display"
>         Depth    24
>         Modes    "1280x1024"
>     EndSubSection
> EndSection
>
> Section "Monitor"
>     Identifier    "Monitor2"
>     HorizSync       30.0 - 82.0
>     VertRefresh     56.0 - 76.0
>     Option        "DPMS"
> EndSection
>
> Section "ServerLayout"
>     Identifier     "Layout0"
>     Screen      0  "Screen0" 0 0
>     Screen      1  "Screen1" RightOf "Screen0"
>     Screen           "Screen2" RightOf "Screen1" # This line I toggle
> on/off as mentioned next
> EndSection
>
>
> With the "Screen2" line from "ServerLayout" commented out (and even with
> it enabled) I get a green screen on the DisplayLink device when booting
> but it turns black once the Ubuntu loading progress bar has finished and
> the login screen is about to show. With the line "Screen2" from
> "ServerLayout" enabled I'm forced into a console mode on the DisplayLink
> device where I usually end up removing the "Screen2" line from
> "ServerLayout" through emacs and rebooting as the other two displays are
> black at this time and I end up with the Xorg.0.log shown above (& X
> fails to start). With the "Screen2" line from "ServerLayout" commented
> out everything boots fine and I can get into X (Gnome, specifically) but
> once the login screen is shown the DisplayLink device goes black.
> Unplugging the device and plugging it back in gets the DisplayLink
> device to show a green screen again.
>
> I'm using libdlo from git and the "udlfb 0.2.3 and
> xf86-video-displaylink 0.3" package from a prior thread. (It's unclear
> to me whether the latter package requires libdlo but I downloaded and
> compiled it anyway to test the device through it's "make check" option
> in the Makefile.) When running "make check" from libdlo I do see a bunch
> of stuff display on the DisplayLink device so that aspect seems to be
> working fine. After make check is done there are no indications in the
> console that any errors occurred. It's when I try to add the DisplayLink
> device to xorg.conf (to have a 3rd monitor) and use Roberto's
> udlfb/xf86-video-displaylink package that it has the "Unknown EDID
> version 0" message in the Xorg.0.log.
>
> For compiling udlfb the steps I took were "make && sudo make install"
> (as the README file is 0 bytes and I couldn't find any other documentation).
>
> For compiling xf86-video-displaylink the steps I took were "./configure
> && make && sudo make install". (I couldn't find any other documentation
> detailing how the lib should be compiled.)
>
>
> Typical dmesg output from plugging in the DisplayLink device while in
> Gnome looks like this:
>
> -----------dmesg-------------
>
> [   69.055834] Console: switching to colour VGA+ 80x25
> [   69.056045] DisplayLink device disconnected
> [   72.960014] usb 1-3: new high speed USB device using ehci_hcd and
> address 5
> [   73.095789] usb 1-3: configuration #1 chosen from 1 choice
> [   73.099934] DisplayLink device attached
> [   73.100097] ret control msg 0: 4 0500fffffff0
> [   73.180193] EDID XRES 1280 YRES 1024
> [   73.180196] INIT VIDEO 0 800 480
> [   73.180197] INIT VIDEO 1 1024 768
> [   73.180199] INIT VIDEO 2 1280 1024
> [   73.180564] ret control msg 1 (STD_CHANNEL): 16
> [   73.180705] ret bulk 2: 156 156
> [   73.180812] ret bulk 3: 0
> [   73.180814] found valid mode...9259
> [   73.181376] screen base allocated !!!
> [   73.182059] colormap allocated
> [   73.182231] Console: switching to colour frame buffer device 160x64
>
> ... which to me looks like everything is just fine.
>
>
> I'm running Ubuntu 9.04 64 bit & 'uname -a' reports: Linux wamu
> 2.6.28-13-generic #44-Ubuntu SMP Tue Jun 2 07:55:09 UTC 2009 x86_64
> GNU/Linux
>
>
>
> With all that said, does anyone have any insights on the "Unknown EDID
> version 0" message or some other things I could try or other insights?
>
> -Pat O'Leary
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