Package: mesa Severity: normal Tags: patch
This was reported in Ubuntu https://bugs.launchpad.net/bugs/87661 and I don't have the hardware to reproduce it, but I think this will be the same in Debian: The ASM optimizations on mesa 64-bit builds include instructions (like for instance 3dnow) that are not available on Intel 64-bit processors, and hence some GL applications crash with SIGILL. The proposed patch, in form of a Xsession.d script, sets the MESA_NO_ASM flag when 64-bit mesa is detected on a processor not having support for 3dnow instructions. -- System Information: Debian Release: lenny/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: i386 (i686) Kernel: Linux 2.6.25-2-486 Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash
: # /etc/X11/Xsession.d/65mesa-check-x86-64 # This file is sourced by Xsession(5), not executed. # If we are running the 64-bit mesa code, we need to disable ASM # optimizations if we are on a non-AMD processor without 3dnow instructions # (until this get fixed in the mesa libraries) if [ `dpkg --print-architecture` = "amd64" ] && ! grep -q "^flags.*3dnow" /proc/cpuinfo then MESA_NO_ASM=1 export MESA_NO_ASM fi