Source: https://bugzilla.redhat.com/show_bug.cgi?id=801650 --- sysdeps/x86_64/multiarch/init-arch.c 2012-05-10 14:06:54.607713791 -0600 +++ sysdeps/x86_64/multiarch/init-arch.c 2012-05-10 14:15:37.855008615 -0600 @@ -154,6 +154,8 @@ __init_cpu_features (void) : "=a" (xcrlow), "=d" (xcrhigh) : "c" (0)); (xcrlow & 6) == 6; })) __cpu_features.feature[index_YMM_Usable] |= bit_YMM_Usable; + else + __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx &= ~bit_AVX; } __cpu_features.family = family;