ubuntu-x-swat team mailing list archive

[Frem <jamesgecko@xxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

The bug is what it says on the tin.

When glutCreateWindow() is called in the attached OpenGL program, the
random number generator appears to be reseeded with a predictable
number. This results in predictable output unless srand(time(NULL))
called again.

This appears to be an Intel driver specific bug; when the program was
tested on an Nvidia card in a Linux distro running a similar version of
freeglut there was no reseeding.

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)

$ lsb_release -rd
Description:	Ubuntu karmic (development branch)
Release:	9.10

$ apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installed: 2:2.8.1-1ubuntu1
  Candidate: 2:2.8.1-1ubuntu1
  Version table:
 *** 2:2.8.1-1ubuntu1 0
        500 http://us.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
Architecture: amd64
Date: Sun Aug 30 16:43:21 2009
DistroRelease: Ubuntu 9.10
MachineType: Dell Inc. Vostro1510
NonfreeKernelModules: wl
Package: xserver-xorg-video-intel 2:2.8.1-1ubuntu1
PccardctlIdent:
 
PccardctlStatus:
 
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-8-generic root=UUID=e183b92c-5171-4a2f-8883-fde441cfe962 ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-8.28-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu5
 libgl1-mesa-glx 7.6.0~git20090817.7c422387-0ubuntu3
 libdrm2 2.4.12+git20090801.45078630-0ubuntu1
 xserver-xorg-video-intel 2:2.8.1-1ubuntu1
 xserver-xorg-video-ati 1:6.12.99+git20090629.f39cafc5-0ubuntu6
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.31-8-generic x86_64
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 07/10/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 0M277C
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd07/10/2008:svnDellInc.:pnVostro1510:pvrNull:rvnDellInc.:rn0M277C:rvr:cvnDellInc.:ct8:cvrN/A:
dmi.product.name: Vostro1510
dmi.product.version: Null
dmi.sys.vendor: Dell Inc.
fglrx: Not loaded
system:
 distro:             Ubuntu
 architecture:       x86_64kernel:             2.6.31-8-generic

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug intel karmic

-- 
Using glutCreateWindow() seeds RNG with predictable value
https://bugs.launchpad.net/bugs/421651
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