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Bug#342053: DirectFrameBuffer crashes on PPC systems if HW accelerated drivers are used

On Fri, Sep 22, 2006 at 09:37:28AM +0200, Attilio Fiandrotti wrote:
> Last times the g-i was tested on PPC, it turned tout that
>   Known good : radeonfb, vesafb (or whatever x86 uses).
>   Known bad : atyfb, nvidiafb
> when acceleration was enabled.
> But that was with GTKDFB 2.0.9 and DFB 0.9.22, while now we have DFB 
> 0.9.25 and GTK 2.8.20 and many bugs got fixed.
> This is the most serious bug affecting g-i on PPC, and i wasn't able to 
> fix it because i have no PPC HW.
> Sven, do you think can give the PPC g-i a try? i will help you on 
> debugging it as much as i can.

Ok, i gave a quick test, and discovered the following :

  (hardware is a pegasos machine, with radeon 9250 graphic card).

  I did a plain g-i from unstable build, and netbooted the vmlinuz-chrp.initrd

  It booted nicely, but ended up in a blue screen, i suppose these are the
  symptoms of the crash.

  I thus rebuilt the installer with adding :

    screenshot-dir=/ (is this one still needed ?)
  to /etc/directfbrc, as explained in a post from december 2005 in this bug

  This one booted fine, and the only problem i could see, is shown in the
  following picture :


  As you can see, there is a white space where the selection should be, this
  works fine when you use the mouse to point on stuff, but using up/down arrow
  keys exhibits this behaviour rather consistently.

  The last issue i saw when going to the consoles with ctr+alt+Fn to
  investigate a bit. The console font is garbagy, but this is probably a bug
  in either the radeonfb driver, or the enter/leave-VT functions of directfb.
  When you kill the X server from the console, this happens also.

Ok, that is all for now, i will propose a patch later on which always enables
no-hardware on powerpc, so we can at least get some testing done, and then
would be happy to do some more advanced debuging to tackle the bug and/or also
the console font issue.


Sven Luther

> Attilio
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