Bug 46764 - xorg/driver/xf86-video-intel 2.18.0 xorg crashes in KDE
Summary: xorg/driver/xf86-video-intel 2.18.0 xorg crashes in KDE
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Chris Wilson
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-02-29 04:25 UTC by Tom
Modified: 2012-02-29 07:22 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
log file (43.66 KB, text/plain)
2012-02-29 05:45 UTC, Tom 		no flags Details
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Description Tom 2012-02-29 04:25:19 UTC 
System : KDE 4.8.0 ( opensuse 12.1 ) , 
3.3.0-rc5-1-desktop #1 SMP PREEMPT Mon Feb 27 02:38:40 UTC 2012 (0b7f048) x86_64 x86_64 x86_64 GNU/Linux

and kernel any kernel from 3.2.6 to 3.3.0 ( probably any kernel from 3.2.x ) 

xorg/driver/xf86-video-intel taken from http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/  ( version 2.18.0 ) 


1. Driver compiled  with --enable-sna .

Switching composing( default sequence is Ctl-Alt-F12 )  in KDE will crash xorg. 

2. Driver compiled without --enable-sna  

Switching composing will work as expected .
Comment 1 Chris Wilson 2012-02-29 04:30:18 UTC 
Please attach the Xorg.log following a crash. More preferable would be to attach gdb and grab a symbolic back trace as well.
Comment 2 Tom 2012-02-29 05:45:27 UTC 
Created attachment 57804 [details]
log file

as requested
Comment 3 Chris Wilson 2012-02-29 05:48:59 UTC 
You need a 1.12 Xserver to avoid that bug.
Comment 4 Tom 2012-02-29 07:17:47 UTC 
Right you are . 

At least in X.Org X Server 1.11.99.903 (1.12.0 RC 3) I don't see this bug anymore. 

Thank you .
Comment 5 Chris Wilson 2012-02-29 07:22:22 UTC 
Presuming then that this was the correct fix in the xserver:

commit 463dd87062edaa974cb8c7163328a53197f237e1
Author: Pauli Nieminen <pauli.nieminen@linux.intel.com>
Date:   Thu Sep 22 18:38:53 2011 +0300

    xf86/modes: Fix shadow rotation crashing when screen pixmap changes
    
    Driver may change screen pixmaps after page flipping that would then
    make damage lose track of the root pixmap.
    
    Using root window for shadow damages fixes the problem because
    SetWindowPixmap is implemented in shadow code.
    
    Signed-off-by: Pauli Nieminen <pauli.nieminen@linux.intel.com>
    Reviewed-by: Keith Packard <keithp@keithp.com>
    Signed-off-by: Keith Packard <keithp@keithp.com>

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