Xvesa black magic

René Rebe rene at exactcode.de
Wed Feb 4 09:06:29 PST 2009

Hi William,

William Tracy wrote:
> Hello all,
> I'm playing with an Kdrive-based image of mine under Qemu. I built
> Xvesa from the 7.3 release of Xorg, as 7.4 seems to have a regression
> in TinyX (that's a topic for another email). I'm building the images
> using the T2 SDE framework, if that's meaningful to anyone.
> Everything compiles fine. I am able to launch Xvesa just fine ... but
> I get no mouse input. It does not respond to a ctrl+alt+backspace
> signal or a ctrl+alt+F<n> signal (which works before the server
> starts).
> Finally, I resorted to launching:
> sleep 30; pkill X
> in one console, while launching Xvesa from another console. This at
> least allowed me to see the output from Xvesa, after the script killed
> the server:
> Couldn't find the keyboard driver keybd
> Could not init font path element blablabla
> Could not init font path element blablabla
> X server does not support locale
> cannot set locale modifiers
> blackbox: managing screen 0 using TrueColor visual 0x21, depth 16
> X connection to :0.0 broken (explicit kill or server shutdown).
> xinit:  conection to X server lost.
> waiting for X server to shut down
> The X11 startup script I'm using is:
> #!/bin/sh
> . /etc/profile # PATH
> HOME=/root # ???
> # on x86* we usually could use Xvesa, otherwise we rather need Xfbdev
> if [ -d /sys/class/graphics/fb0 ]; then
>         X="Xfbdev"
> else
>         X="Xvesa -mode 0x117"
> fi
> cd $home
> xinit `which blackbox` -- `which $X` -mouse mouse,/dev/input/mice
> -keybd keyboard
> I have confirmed that it is Xvesa, and not Xfbdev that is being
> launched, and I have tried every conceivable variation on the server
> parameters at this point.
> Now, what really puzzles me: in spite of the error message, I can
> force a response to keyboard input. If I launch an xterm and no window
> manager, I can force the xterm to get key focus, and I can type into
> it. However, nothing I can do will make the mouse respond to motion or
> to clicks.
> So, any thoughts on whether this looks like a kernel configuration
> issue, a build configuration issue, or just a run-time X configuration
> issue?
> If anyone is *really* motivated to help :-) I can try to get you a
> copy of the image I built and/or the configuration I used to build it.
My rescue target buidl will finish later today and I plan to keep
trackling the issue.


  René Rebe - ExactCODE GmbH - Europe, Germany, Berlin
  http://exactcode.de | http://t2-project.org | http://rene.rebe.name

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