Ubuntu
xserver-xorg-video-intel package

Xorg crashed with SIGSEGV in xf86RandR12SetRotations()

Bug #211897 reported by JustusWinter on 2008-04-04

Affects		Status	Importance	Assigned to	Milestone
	X.Org X server	Invalid	Medium	freedesktop-bugs #16456
	xserver-xorg-video-intel (Ubuntu)	Invalid	Medium	Unassigned

Bug Description

I noticed that just enabling xinerama causes a segmentation fault. As mentioned in the wiki, I enabled NoTrapSignals. xorg.conf and associated log is attached, the very same configuration without xinerama works fine. The crash is very easily reproducable on my laptop, if you need any more information, just ask.

$ lsb_release -rd
Description: Ubuntu hardy (development branch)
Release: 8.04
$ apt-cache policy xorg
xorg:
  Installed: 1:7.3+10ubuntu7
  Candidate: 1:7.3+10ubuntu7
  Version table:
*** 1:7.3+10ubuntu7 0
        700 http://de.archive.ubuntu.com hardy/main Packages
        100 /var/lib/dpkg/status
     1:7.2-5 0
        650 http://ftp.de.debian.org testing/main Packages
$ apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installed: 2:2.2.1-1ubuntu6
  Candidate: 2:2.2.1-1ubuntu6
  Version table:
*** 2:2.2.1-1ubuntu6 0
        700 http://de.archive.ubuntu.com hardy/main Packages
        100 /var/lib/dpkg/status
     2:2.1.0-2 0
        650 http://ftp.de.debian.org testing/main Packages
$ apt-cache policy xserver-xorg-video-i810
xserver-xorg-video-i810:
  Installed: 2:1.7.4-0ubuntu7
  Candidate: 2:1.7.4-0ubuntu7
  Version table:
     2:2.1.0-2 0
        650 http://ftp.de.debian.org testing/main Packages
*** 2:1.7.4-0ubuntu7 0
        700 http://de.archive.ubuntu.com hardy/main Packages
        100 /var/lib/dpkg/status

ProblemType: Crash
Architecture: amd64
Date: Fri Apr 4 19:44:29 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/Xorg
Package: xserver-xorg-core 2:1.4.1~git20080131-1ubuntu6 [modified: usr/bin/Xorg usr/bin/cvt usr/bin/gtf]
PackageArchitecture: amd64
ProcCmdline: X :1 -config xinerama.xorg.conf
ProcEnviron:
SHELL=/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
LANG=en_US.UTF-8
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
xf86RandR12SetRotations (
xf86CrtcScreenInit (screen=0xa20730)
?? ()
AddScreen (pfnInit=0x7f9a08aa79f0, argc=4,
InitOutput (pScreenInfo=0x7f1d20, argc=4,
Title: Xorg crashed with SIGSEGV in xf86RandR12SetRotations()
Uname: Linux 2.6.24-14-generic x86_64
UserGroups:

Tags:

Revision history for this message

JustusWinter (4winter) wrote on 2008-04-04:

xinerama.xorg.conf - Valid Edit (2.3 KiB, text/plain)
Dependencies.txt Edit (5.7 KiB, text/plain; charset="utf-8")
Disassembly.txt Edit (912 bytes, text/plain; charset="utf-8")
ProcMaps.txt Edit (11.4 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (603 bytes, text/plain; charset="utf-8")
Registers.txt Edit (872 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (1.5 KiB, text/plain; charset="utf-8")

Revision history for this message

JustusWinter (4winter) wrote on 2008-04-04:

Xorg.1.log Edit (27.8 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2008-04-04: Symbolic stack trace

Stacktrace.txt (retraced) Edit (1.8 KiB, text/plain)

StacktraceTop:xf86RandR12SetRotations (
xf86CrtcScreenInit (screen=0xa20730)
I830ScreenInit (scrnIndex=0, pScreen=0xa20730,
AddScreen (pfnInit=0x7f9a08aa79f0 <I830ScreenInit>,
InitOutput (pScreenInfo=0x7f1d20, argc=4,

Revision history for this message

Apport retracing service (apport) wrote on 2008-04-04: Symbolic threaded stack trace

ThreadStacktrace.txt (retraced) Edit (1.9 KiB, text/plain)

Changed in xorg-server:
importance:	Undecided → Medium

Revision history for this message

Timo Aaltonen (tjaalton) wrote on 2008-04-22:

AIUI the intel driver does not support xinerama, but randr-1.2 which you should use instead. In any case, I don't think it should crash in this case.

Revision history for this message

Bryce Harrington (bryce) wrote on 2008-05-21:

Correct that the Xinerama configuration is not supported by -intel. However, if it shouldn't crash, what should it do? Ignore the Xinerama flag and start with a generic config? Or just exit with a friendlier error message?

Changed in xserver-xorg-video-intel:
status:	New → Incomplete

Revision history for this message

In freedesktop.org Bugzilla #16456, Oswald Buddenhagen (ossi-kde) wrote on 2008-06-21:

Created an attachment (id=17282)
full log without xinerama

as soon as i enable xinerama (with or without a second screen configured), the server crashes at the randr initialization (it seems). this might be a driver problem as well - i have no idea.

Revision history for this message

In freedesktop.org Bugzilla #16456, Oswald Buddenhagen (ossi-kde) wrote on 2008-06-21:

Created an attachment (id=17283)
the part that differs from the non-xinerama startup

unggnu (unggnu) on 2008-06-22

Changed in xserver-xorg-video-intel:
status:	Incomplete → Confirmed

Revision history for this message

In freedesktop.org Bugzilla #16456, Bryce Harrington (bryce) wrote on 2008-07-17:

Xinerama is deprecated and not supported in the -intel drivers (and other drivers that have been converted to use randr, like radeon and radeonhd). However, X should probably just exit with an informative error message in these situations rather than crash with a cryptic backtrace.

See also https://bugs.launchpad.net/xorg-server/+bug/211897, and https://bugs.freedesktop.org/show_bug.cgi?id=16709

Revision history for this message

In freedesktop.org Bugzilla #16456, Bryce Harrington (bryce) wrote on 2008-07-17:

#10

*** Bug 16709 has been marked as a duplicate of this bug. ***

Revision history for this message

In freedesktop.org Bugzilla #16456, Bryce Harrington (bryce) wrote on 2008-07-17:

#11

Also, for reference: http://lists.freedesktop.org/archives/xorg/2007-April/023988.html

Bug Watch Updater (bug-watch-updater) on 2008-07-17

Changed in xorg-server:
status:	Unknown → Confirmed

Bryce Harrington (bryce) on 2008-07-17

Changed in xserver-xorg-video-intel:
status:	Confirmed → Triaged

Revision history for this message

In freedesktop.org Bugzilla #16456, Oswald Buddenhagen (ossi-kde) wrote on 2008-07-18:

#12

and how would that help me with multiple graphics cards? right, it wouldn't - that is planned for randr 1.3 and won't materialize before early next year, realistically speaking.
an error message explaining the situation would be certainly welcome, though.

Revision history for this message

Tino Keitel (tino-keitel+lp) wrote on 2008-09-22:

#13

It shouldn't crash. And it should support Xinerama. In the current state, only ati and intel seem to support randr-1.2. All other drivers need Xinerama for multihead configurations. Think of the case where you want to use an intel card and another card with a non-randr-1.2 aware driver.

So as long as most of the drivers don't support randr-1.2, Xinerama should still be a supported feature.

I currently use the old i810 driver that I patched to build against the current Xorg 7.3 headers to get Xinerama working. However, this only works because my hardware (i965) was already supported by the i810 driver.

Revision history for this message

Bryce Harrington (bryce) wrote on 2008-12-20:

#14

[This is an automatic notice.]

We'd like to forward your bug upstream, however upstream requires
that you first test it against their newer driver code.

To save you the effort of building the driver from source, we've built
packages for the driver and its new dependencies.

So you have a couple options:

1. Download and test .debs for intrepid, from:
https://edge.launchpad.net/~intel-gfx-testing/+archive

-or-

2. Download and test the Jaunty alpha-2 (or newer) Live CD,
(which includes a beta of the new xserver 1.6 as well).
See http://cdimage.ubuntu.com/releases/9.04/ for ISOs

Thanks ahead of time! You can simply reply to this email to report your
findings.

P.S., if you wish to forward your bug upstream yourself, please follow
these directions to do so:
http://intellinuxgraphics.org/how_to_report_bug.html

Changed in xserver-xorg-video-intel:
status:	Triaged → Incomplete

Revision history for this message

Bryce Harrington (bryce) wrote on 2009-01-22:

#15

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.

Changed in xserver-xorg-video-intel:
status:	Incomplete → Invalid

Bug Watch Updater (bug-watch-updater) on 2010-09-14

Changed in xorg-server:
importance:	Unknown → Medium

Bug Watch Updater (bug-watch-updater) on 2011-01-25

Changed in xorg-server:
importance:	Medium → Unknown

Bug Watch Updater (bug-watch-updater) on 2011-02-03

Changed in xorg-server:
importance:	Unknown → Medium

Revision history for this message

In freedesktop.org Bugzilla #16456, Ajax-a (ajax-a) wrote on 2018-06-12:

#16

Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please file a new report if you continue to experience issues with a current server.

Bug Watch Updater (bug-watch-updater) on 2018-06-13

Changed in xorg-server:
status:	Confirmed → Invalid

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Xorg crashed with SIGSEGV in xf86RandR12SetRotations()

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