RE: Graphics Problems with gnome-shell-3.10.3

On Sun, May 4, 2014 at 6:31 AM, John Frankish <j-frankish slb com> wrote:
I've compiled gnome-3.10.x from source to run on a machine with an intel core-i7 2640m 2.8GHz cpu 
with 8GB RAM and intel hd3000 graphics on 64bit tinycorelinux using a 3.8.13 kernel.

Using gnome-session/gnome-shell, most things seem to work, but the graphics display is very poor.

The display background continually turns bright white and dragging any window produces a trail of 
multiple windows behind it. The only way to fix this seems to use the mac/special/windows key to 
move to the "task- switcher" screen and back again.

Setting CLUTTER_PAINT="disable-clipped-redraws:disable-culling" does not seem to help appreciably.

Are the above problems caused by the graphics not being powerful enough or is it a software problem?

If it is a software problem, are there any patches available to fix this without moving to 
gnome-3.12.x? The software in use is listed below.

It's an issue with the background and can be fixed by setting your background to a constant color. 
You can also apply the four patches in this bug, but I'm not sure if it will cleanly apply on top of 

Thanks for the suggestions.

I don't think this is an issue with the background - if I chose a
plain colour from gnome-backgrounds, it does not improve things - or
perhaps I misunderstood?

Most of the four patches do not apply cleanly so as an alternative I
took "backgrounds.js" from gnome-shell-3.13.1, but this did not
improve things either...

I pasted the error log below, but nothing seems point to what the
problem might be?

I played around with this some more and checked Xorg.0.log for errors - see
attached - without finding anything.

The trail of windows produced by dragging a window only happens when the
window crosses the background, it does not happen when crossing another

The background "white-out" happens every time I access gnome-control-
center via the icons in the right hand corner of the top panel and randomly at
other times.

As before using the mac/special/windows key to swap to the task-switcher
fixes things, but gets tiresome :P

There must surely be a way to fix this?

I finally found the answer - to disable the newer "sna" graphics acceleration and enable the older "uxa" 

Now both problems - the "white-outs" and trail of multiple window images when dragging a window - have 

Hardware/software details below.


[  1838.558] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
[  1838.572] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 3000

00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated 
Graphics Controller [8086:0126] (rev 09)
Kernel driver in use: i915

$ cat /var/log/Xorg* | grep SNA
[   196.737] (II) intel(0): SNA initialized with Sandybridge (gen6, gt2) backend

Create following file:

Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "AccelMethod"  "uxa"

[  1838.977] (II) UXA(0): Driver registered support for the following operations:
[  1838.977] (II) intel(0): Use standard UXA acceleration

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