Re: [Xpert][parisc-linux] white is blue

Re: [Xpert][parisc-linux] white is blue

[caslivkoff]

[[ I'm cross-posting this to both mailing lists.  ]]
[[ Someone let me know if this is a problem.      ]]

Michel D=E4nzer wrote:
> =

> caslivkoff@yahoo.com wrote:
> =

> > I posted this to the parisc-linux mailing list, but so far, no
> > responses. Can anyone offer a suggestion? The fbdev driver is "suppos=
ed"
> > to work with the graphics in the 712/60. I also tried this on a secon=
d
> > 712 with the same behavior. What's wierd is that other colors appear =
OK.
> > I'm attaching the XFree86.0.log.
> >
> > -----------------------------------------------------
> >
> > I just loaded the ISO on a 712/60 and setup XFree86 to use the fbdev
> > driver. It seems to be OK, with the exception that "white" is "blue".=
 If
> > I xwd the root  window dump and examine it on another X display, it
> > looks fine.
> =

> The fbdev driver uses the framebuffer device to set the colormap, which=
 works
> in general (at least for me ;), so I suspect there is a problem with th=
e
> framebuffer device.

That's what I though too, but I've tried this on 2 different 712's and
have the same behavior. What is strange is that the framebuffer can
display white text with no problem on the console (the default cursor is
white). Also, under X, specifying #fefefe shows up as "almost white".

Any other ideas?  I thought that possibly the rgb.txt was not getting
loaded, but I'm fairly certain that it is.

_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com

Re: [Xpert][parisc-linux] white is blue

[Michel Dänzer]

caslivkoff@yahoo.com wrote:

> Michel Dänzer wrote:
> >
> > caslivkoff@yahoo.com wrote:
> >
> > > I posted this to the parisc-linux mailing list, but so far, no
> > > responses. Can anyone offer a suggestion? The fbdev driver is "supposed"
> > > to work with the graphics in the 712/60. I also tried this on a second
> > > 712 with the same behavior. What's wierd is that other colors appear OK.
> > > I'm attaching the XFree86.0.log.
> > >
> > > -----------------------------------------------------
> > >
> > > I just loaded the ISO on a 712/60 and setup XFree86 to use the fbdev
> > > driver. It seems to be OK, with the exception that "white" is "blue". If
> > > I xwd the root  window dump and examine it on another X display, it
> > > looks fine.
> >
> > The fbdev driver uses the framebuffer device to set the colormap, which
> > works in general (at least for me ;), so I suspect there is a problem with
> > the framebuffer device.
> 
> That's what I though too, but I've tried this on 2 different 712's and
> have the same behavior.

But I assume you use the same framebuffer device on both? (Note that when I
say framebuffer device, I refer to the Linux kernel driver)

> What is strange is that the framebuffer can display white text with no
> problem on the console (the default cursor is white). Also, under X,
> specifying #fefefe shows up as "almost white".

There are no known problems with the XFree86 fbdev colormap handling, but
maybe you have found one... :)


> Any other ideas?  I thought that possibly the rgb.txt was not getting
> loaded, but I'm fairly certain that it is.

You can easily check with grep -i rgb /var/log/XFree86.0.log .


-- 
Earthling Michel Dänzer (MrCooper)    \   Debian GNU/Linux (powerpc) developer
CS student, Free Software enthusiast   \        XFree86 and DRI project member

Re: [Xpert][parisc-linux] white is blue

[Helge Deller]

> > That's what I though too, but I've tried this on 2 different 712's and
> > have the same behavior.
>
> But I assume you use the same framebuffer device on both? (Note that when I
> say framebuffer device, I refer to the Linux kernel driver)

Both 712 have the same Graphics chip ("Artist") and use the same stifb driver (it's 
also the only one which supports HP's build-in graphics atm).

> > What is strange is that the framebuffer can display white text with no
> > problem on the console (the default cursor is white). Also, under X,
> > specifying #fefefe shows up as "almost white".
>
> There are no known problems with the XFree86 fbdev colormap handling, but
> maybe you have found one... :)

This is definitively a bug in the linux kernel stifb driver.
I wrote (migrated) most parts of this stifb driver and it works perfectly without any
color-problems together with the XFree86 fbdev driver here on my 715/64. 
The 715/64 has the Artist graphics chip too, so I suspect we just need some more 
initialization for the "older revisions" of the Artist chip in the 712 machines.

Greetings,
Helge

Re: [Xpert][parisc-linux] white is blue

[Grant Grundler]

Helge Deller wrote:
> The 715/64 has the Artist graphics chip too, so I suspect we
> just need some more initialization for the "older revisions" of the Artist
> chip in the 712 machines.

It's possible the 715/64 firmware and 712 firmware behave differently.
ie artist chip initialization by firmware could be different.

I'm assuming stifb doesn't send a RESET command to the Artist chip directly
and start initializing from scratch.

grant

Grant Grundler
parisc-linux {PCI|IOMMU|SMP} hacker
+1.408.447.7253

Re: [Xpert][parisc-linux] white is blue

[Dr Andrew C Aitchison]

On Sat, 18 Aug 2001 caslivkoff@yahoo.com wrote:
> > > I posted this to the parisc-linux mailing list, but so far, no
> > > responses. Can anyone offer a suggestion? The fbdev driver is "suppos=
ed"
> > > to work with the graphics in the 712/60. I also tried this on a secon=
d
> > > 712 with the same behavior. What's wierd is that other colors appear =
OK.
> > >
> > > I just loaded the ISO on a 712/60 and setup XFree86 to use the fbdev
> > > driver. It seems to be OK, with the exception that "white" is "blue".=
 If

> Michel D=E4nzer wrote:
> > The fbdev driver uses the framebuffer device to set the colormap, which=
 works
> > in general (at least for me ;), so I suspect there is a problem with th=
e
> > framebuffer device.

> Any other ideas?  I thought that possibly the rgb.txt was not getting
> loaded, but I'm fairly certain that it is.

It does sound as though the active colormap isn't being initialized fully.
Does the 712/60 have more than one colormap ?

--=20
Dr. Andrew C. Aitchison=09=09Computer Officer, DPMMS, Cambridge
A.C.Aitchison@dpmms.cam.ac.uk=09http://www.dpmms.cam.ac.uk/~werdna

Re: [Xpert][parisc-linux] white is blue

[caslivkoff]

Dr Andrew C Aitchison wrote:
> 
> It does sound as though the active colormap isn't being initialized fully.
> Does the 712/60 have more than one colormap ?

Actually, yes. The Artist (in all 712's, some 715's and some 725's) has
2 colormaps.

_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com