intel 945GM+current xorg git: display garbled w. KDM themed login screen

		Hello.

Due to serveral reasons, we are using the most up-to-date
xorg that we
can get, which means checking out the git-tree of the
project(s) which
together build xorg.

We are using KDE-3.5.7 as the desktop solution and KDM as
the login
manager and had to notice that the greeting screen of KDM
gets garbled
with image data after the first logout, if
"UseTheme=true".
A non-themed KDM displays correctly.

Said image data is obviously from the session that was last
terminated
which gets "shuffled" with the background of the
themed login screen.
Attempts to capture a screenshot have failed,
unfortunately.

When logging in, the effect vanishes (the screen gets set up
correctly);
after logging out again, the background of the KDM login
screen is
garbled again.

lspci for graphics chip: 00:02.0 VGA compatible controller:
Intel
Corporation Mobile 945GM/GMS/940GML Express Integrated
Graphics
Controller (rev 03)
==============================
kde version 3.5.7
qt version 3.3.8
xorg (current git)
xf-video-intel (current git)
linux-kernel 2.6.21.5

Any ideas where this could come from?
Any obvious differences in the way KDM paints the screen
with it's login
theme contrary to how the KDE session paints it's screen
afterwards?

		I'd be grateful for any insights ...

			greets,
			   jens
-- 
drifterbcsoft.de
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On Wed, 2007-06-27 at 18:14 +0200, Jens Stroebel wrote:
> 		Hello.
> 
> Due to serveral reasons, we are using the most
up-to-date xorg that we
> can get, which means checking out the git-tree of the
project(s) which
> together build xorg.
> 
> We are using KDE-3.5.7 as the desktop solution and KDM
as the login
> manager and had to notice that the greeting screen of
KDM gets garbled
> with image data after the first logout, if
"UseTheme=true".
> A non-themed KDM displays correctly.
> 
> Said image data is obviously from the session that was
last terminated
> which gets "shuffled" with the background of
the themed login screen.
> Attempts to capture a screenshot have failed,
unfortunately.
I have the same situation with recent xorg and kdm 3.5.7 -
the login
screen is garbled and I can't log in, I have to use xdm
instead. 
> 
> When logging in, the effect vanishes (the screen gets
set up correctly);
> after logging out again, the background of the KDM
login screen is
> garbled again.
> 
> lspci for graphics chip: 00:02.0 VGA compatible
controller: Intel
> Corporation Mobile 945GM/GMS/940GML Express Integrated
Graphics
> Controller (rev 03)
> ==============================
> kde version 3.5.7
> qt version 3.3.8
> xorg (current git)
> xf-video-intel (current git)
> linux-kernel 2.6.21.5
> 
> Any ideas where this could come from?
> Any obvious differences in the way KDM paints the
screen with it's login
> theme contrary to how the KDE session paints it's
screen afterwards?
> 
> 		I'd be grateful for any insights ...
> 
> 			greets,
> 			   jens

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Rod Butcher wrote:
>> Said image data is obviously from the session that
was last terminated
>> which gets "shuffled" with the background
of the themed login screen.
>> Attempts to capture a screenshot have failed,
unfortunately.

> I have the same situation with recent xorg and kdm
3.5.7 - the login
> screen is garbled and I can't log in, I have to use xdm
instead. 

Just to repeat, in case you missed it in my first post:
You can disable theming in kdm (edit
$KDE_CONF_DIR/kdm/kdmrc, set
UseTheme from "true" to "false"), after
which kdm behaves in a way like
xdm (starts a greeter, uses simpler routines to draw
background).
Then you can still benefit of the advantages kdm offers over
xdm; you'll
loose some eye-candy, though 


		greets,
		   jens

-- 
drifterbcsoft.de
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On Sat, 2007-06-30 at 00:52 +0200, Jens Stroebel wrote:
> Rod Butcher wrote:
> >> Said image data is obviously from the session
that was last terminated
> >> which gets "shuffled" with the
background of the themed login screen.
> >> Attempts to capture a screenshot have failed,
unfortunately.
> 
> > I have the same situation with recent xorg and kdm
3.5.7 - the login
> > screen is garbled and I can't log in, I have to
use xdm instead. 
> 
> Just to repeat, in case you missed it in my first
post:
> You can disable theming in kdm (edit
$KDE_CONF_DIR/kdm/kdmrc, set
> UseTheme from "true" to "false"),
after which kdm behaves in a way like
> xdm (starts a greeter, uses simpler routines to draw
background).
> Then you can still benefit of the advantages kdm offers
over xdm; you'll
> loose some eye-candy, though 
Thanks, what a great list and people ! I had tried
previously to disable
the thme using the control panel with no luck. Now I know
where the
secret hidden file is.
thanks
Rod
> 
> 
> 		greets,
> 		   jens
> 

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Jens Stroebel wrote:
> 		Hello.
> 
> Due to serveral reasons, we are using the most
up-to-date xorg that we
> can get, which means checking out the git-tree of the
project(s) which
> together build xorg.
> 
> We are using KDE-3.5.7 as the desktop solution and KDM
as the login
> manager and had to notice that the greeting screen of
KDM gets garbled
> with image data after the first logout, if
"UseTheme=true".
> A non-themed KDM displays correctly.

For completeness sake:
In the KDM login screen, when CAPSLOCK is used, it is
impossible to
de-activate it again. (all subsequent keys are caps then).
This behavior also does only happen with KDM, the following
KDE session
is functioning as expected (CAPSLOCK can be activated and
deactivated
again).
			greets,
			   jens
-- 
drifterbcsoft.de
			23.....56.......drifting
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On Wed, Jun 27, 2007 at 06:14:05PM +0200, Jens Stroebel
wrote:

> We are using KDE-3.5.7 as the desktop solution and KDM
as the login
> manager and had to notice that the greeting screen of
KDM gets garbled
> with image data after the first logout, if
"UseTheme=true".
> A non-themed KDM displays correctly.

		[...snipped...]

> Any ideas where this could come from?

After digging and building, I found out that the pixman
library,
which is used by Xorg, is the one which introduced the
breakage.

Commit e1dd17451cbe2c7d36205fe2fc4cea0092ee4141 (for the git
users)
is the one introducing the behavior.

> Any obvious differences in the way KDM paints the
screen with it's login
> theme contrary to how the KDE session paints it's
screen afterwards?

I have to admit that I'd still be interested in this
info...

On Tue, Jul 03, 2007 at 01:31:47PM +0200, Jens Stroebel
wrote:
> Jens Stroebel wrote:

> For completeness sake:
> In the KDM login screen, when CAPSLOCK is used, it is
impossible to
> de-activate it again. (all subsequent keys are caps
then).
> This behavior also does only happen with KDM, the
following KDE session
> is functioning as expected (CAPSLOCK can be activated
and deactivated
> again).

While I do not see the connection here, this is equally
introduced via
the above-mentioned pixman library, namely the commit named
above. 


			greets,
			   jens
-- 
drifterbcsoft.de
			23.....56.......drifting

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> On Tue, Jul 03, 2007 at 01:31:47PM +0200, Jens Stroebel
wrote:
>> Jens Stroebel wrote:
> 
>> For completeness sake:
>> In the KDM login screen, when CAPSLOCK is used, it
is impossible to
>> de-activate it again. (all subsequent keys are caps
then).
>> This behavior also does only happen with KDM, the
following KDE session
>> is functioning as expected (CAPSLOCK can be
activated and deactivated
>> again).
> 
> While I do not see the connection here, this is equally
introduced via
> the above-mentioned pixman library, namely the commit
named above. 

		Correction:
This is not the case; the CAPSLOCK behavior is introduced by
current
xserver-git.

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