linux-kernel - Re: [Linux-fbdev-devel] [PATCH] fb: hide cursor in graphics mode

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Message-Id: <20090222081517.567a29bd.krzysztof.h1@poczta.fm>
Date:	Sun, 22 Feb 2009 08:15:17 +0100
From:	Krzysztof Helt <krzysztof.h1@...zta.fm>
To:	Krzysztof Helt <krzysztof.h1@...zta.fm>
Cc:	Risto Suominen <risto.suominen@...il.com>, adaplas@....net,
	Andrew Morton <akpm@...ux-foundation.org>,
	geert@...ux-m68k.org, linux-fbdev-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [Linux-fbdev-devel] [PATCH] fb: hide cursor in graphics mode

On Fri, 13 Feb 2009 21:06:35 +0100
Krzysztof Helt <krzysztof.h1@...zta.fm> wrote:

> On Thu, 12 Feb 2009 23:12:26 +0200
> Risto Suominen <risto.suominen@...il.com> wrote:
> 
> > 2009/2/12 Andrew Morton <akpm@...ux-foundation.org>:
> > >> ---
> > >> The testing is done on kernel version 2.6.18.
> > >
> > > That's a truly ancient kernel.  Is the patch needed on current kernels?
> > > Does it work correctly in current kernels?
> > >
> > It does not on 2.6.24. The patch works.
> > 
> 
> I have tested two cards with the hardware cursor: 
> Permedia 2 (pm2fb) and Voodoo-3 (tdfxfb).
> 
> Both cards use the hardware cursor and both does
> not produce the bug you have described.
> I have used the Xorg version 7.2 included in the
> Slackware 12 and a current git version of the kernel
> (updated two days ago).
> 
> I do not have the ATI Mach64 card to test it.
> I will test my cards with the kernel 2.6.24.
> 
> Either, this bug is related only to the atyfb driver
> or it was solved in the current kernel.
> I looked into the atyfb driver code and I did not
>  see anything suspicious there.
> 

I have done more testing.

The pm2fb and tdfxfb work ok with Xorg 7.2 (xserver 1.3.0)
and kernel 2.6.24 (the same cards as above used).

I have build Xfbdev (kdrive) server for the same version of
Xorg (xserver 1.3.0). The Xfbdev works ok (no cursor left)
with both the pm2fb and tdfxfb.

I start wondering what is your version of Xfbdev and how
did you build it. I have build the Xfbdev with the following 
options:

./configure --enable-kdrive \
--disable-xvmc --disable-glx \
--disable-dri --disable-xinerama \
--enable-static --disable-xnest \
--disable-xvfb --disable-dmx \
--disable-xprint --disable-xsdl \
--disable-xorgcfg --disable-xorg

Either, my Xfbdev version is too new to reproduce the bug
(and then the problem is the Xfbdev regression) or the 
problem shows only with special build option.

Could you provide me with information how to build the
Xfbdev to reproduce the problem?
What is your platform (maybe it is not x86) and kernel
configuration?

Kind regards,
Krzysztof


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