Bug#449089: xserver-xorg: Auto detection fails on Thinkpad X31
On Sun, Nov 04, 2007 at 07:03:39PM +0100, Moritz Muehlenhoff wrote:
> David Nusinow wrote:
> > > I've tested the auto detection code David asked for and ran into
> > > a bug: When I start X.org with the auto-generated config (I use startx,
> > > since I work on framebuffer console most of the time, on my notebook
> > > X11 is really just a slim layer beyond MPlayer) the screen remains
> > > black and the system doesn't take anymore input. (I can't switch
> > > to tty2 e.g.)
> > >
> > > The generated xorg.conf is included by the reportbug script,
> > > my previous one can be found on http://www.inutil.org/jmm/xorg.conf
> > >
> > > Please let me know if now need further information.
> >
> > <snip>
> >
> > > Section "Device"
> > > Identifier "ATI Technologies Inc Radeon Mobility M6 LY"
> > > Driver "ati"
> > > BusID "PCI:1:0:0"
> > > Option "UseFBDev" "true"
> > > EndSection
> >
> > It looks like in this config file you enabled fbdev while in the old one
> > you didn't have this option set. Does the autogenerated config work when
> > you remove that option or just say "no" to the question during
> > dpkg-reocnfigure?
>
> Indeed, the auto-generated xorg.conf works if UseFBdev is not enabled.
>
> Does this indicate a bug in radeonfb, shall I report it to Linux kernel
> bugzilla?
>
> I don't remember if fbdev mode switches used to work in the past.
Sorry it took me so long to get back to. You a quick glance at the code,
this is most likely an xserver driver problem rather than a kernel problem.
I'll double check to make sure, but I think the bug probably should remain
here for now, possibly being forwarded upstream. Michel probably has a lot
more insight to this bug than anyone else though.
- David Nusinow
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