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Re: Pixmap corruption on 4.2.1-0pre1v1, powerpc r128



On Friday 20 September 2002 13:14, Michel Dänzer wrote:
> On Don, 2002-09-19 at 09:24, Devin Carraway wrote:
> > On Tue, Sep 17, 2002 at 11:26:37PM +0200, Michel D?nzer wrote:
> > > > Various bits of the gnome2 panel leave visual artifacts (incomplete
> > > > redraws at the edges of pixmaps) as things slide around during the
> > > > usual login loading.
> > > >
> > > > Under uncertain conditions (it's hard to reproduce), window contents
> > > > vanish when opaque-moved (the backing region of the root window comes
> > > > along instead); some or all of the window decorations remain visible.
> > > > This seems to be associated with switching back to X from a console.
> > >
> > > These don't ring a bell, can you put up screenshots somewhere?
> >
> > http://devin.com/cruft/xf4.2.1-pixmapquirks.png

This I haven't seen.

> [...]
>
> > http://devin.com/cruft/xf4.2.1-pixmapquirks-qt.png

I can fix this effect on my i810 by running either 'Option "NoAccel"', or 
'Option "XaaNoOffscreenPixmaps"', or 'Option  "XaaNoPixmapCache"'.  I no 
longer use the i810, but IIRC 'Option "XaaNoOffscreenPixmaps"' seemed to give 
the best subjective performance.  It happened with XFree86 4.anything.

> Hmm, never seen that before. Assuming that Option "NoAccel" fixes it,
> can you try playing with the "XaaNo..." options to see if it's a
> particular acceleration function? Start with the ones related to the
> pixmap cache.

-- 
Berend De Schouwer



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