Comment 3 for bug 728579

Kernel driver in use: i915
 Kernel modules: i915

From BootDmesg:
[ 12.913580] intel ips 0000:00:1f.6: Warning: CPU TDP doesn't match expected value (found 25, expected 35)
[ 12.913605] intel ips 0000:00:1f.6: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[ 12.913745] intel ips 0000:00:1f.6: failed to get i915 symbols, graphics turbo disabled
[ 12.913876] intel ips 0000:00:1f.6: IPS driver initialized, MCP temp limit 65535

From CurrentDmesg
[ 43.062210] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded
[ 48.053796] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded
[ 53.045348] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded
[ 58.036963] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded
[ 63.028500] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded
[ 68.024550] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded

From Xorg.log.old;
[ 8358.574]
Backtrace:
[ 8358.574] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80ef31b]
[ 8358.574] 1: /usr/bin/X (0x8048000+0x5d00d) [0x80a500d]
[ 8358.574] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb778240c]
[ 8358.574] 3: /usr/bin/X (FreeClientResources+0xed) [0x80655ad]
[ 8358.574] 4: /usr/bin/X (FreeAllResources+0x60) [0x8065680]
[ 8358.574] 5: /usr/bin/X (0x8048000+0x1a606) [0x8062606]
[ 8358.574] 6: /lib/libc.so.6 (__libc_start_main+0xe7) [0xb74adce7]
[ 8358.574] 7: /usr/bin/X (0x8048000+0x1a1b1) [0x80621b1]
[ 8358.574] Segmentation fault at address 0x126b4
[ 8358.574]
Caught signal 11 (Segmentation fault). Server aborting
[ 8358.574]