Bug 12295

Summary: segfault in xf86RandR12SetRotations when enabling dual-head
Product: xorg Reporter: Tormod Volden <bugzi11.fdo.tormod>
Component: Server/DDX/XorgAssignee: Xorg Project Team <xorg-team>
Status: RESOLVED INVALID QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
xorg.conf for dual-head (made by displayconfig-gtk)
none
Xorg.0.log with backtrace none

Description Tormod Volden 2007-09-05 15:41:19 UTC 
(In the heat of debugging bug #12245) I tried to use displayconfig-gtk to enable dual-head (laptop with X700 card + external LCD) and "Test" would always fail. Restarting X with the new xorg.conf crashes the server.

xorg-server 2:1.3.0.0.dfsg-12ubuntu4
xserver-xorg-video-ati 6.7.192-1ubuntu1

Backtrace:
0: /usr/X11R6/bin/X(xf86SigHandler+0x81) [0x80c9781]
1: [0xffffe420]
2: /usr/X11R6/bin/X(xf86RandR12SetRotations+0x6b) [0x80fe41b]
3: /usr/X11R6/bin/X(xf86CrtcScreenInit+0x9e) [0x80fa59e]
4: /usr/lib/xorg/modules/drivers//radeon_drv.so(RADEONScreenInit+0x180f) [0xb7bdbb3f]
5: /usr/X11R6/bin/X(AddScreen+0x1ee) [0x807656e]
6: /usr/X11R6/bin/X(InitOutput+0x21e) [0x80a868e]
7: /usr/X11R6/bin/X(main+0x27b) [0x8076d0b]
Comment 1 Tormod Volden 2007-09-05 15:42:22 UTC 
Created attachment 11441 [details]
xorg.conf for dual-head (made by displayconfig-gtk)
Comment 2 Tormod Volden 2007-09-05 15:43:01 UTC 
Created attachment 11442 [details]
Xorg.0.log with backtrace
Comment 3 Tormod Volden 2007-09-06 12:29:01 UTC 
Seems to be confirmed with the same backtrace on ATI Radeon 7500 QW (AGP/PCI) in https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/132716/comments/31
Comment 4 Alex Deucher 2007-09-14 16:10:13 UTC 
The problem is you are trying to set up zaphod mode with a driver that doesn't support it.  displayconfig-gtk is doing the wrong thing; use xrandr to configure 6.7.192.
Comment 5 Tormod Volden 2009-11-29 08:56:25 UTC 
I think this bug has run out of date. I have no displayconfig-gtk any longer either.

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