X.org doesn't start with 3.14: [KMS] drm report modesetting isn't supported

["Justin Piszcz" <jpiszcz@lucidpixels.com>]

Hello,

Do I need some updated ATI firmware (I believe this might have happened in
the past)..?
I booted back to 3.13.6, Xorg starts up fine, but with 3.14 it does not
start.
Thoughts?

3.13.6:
$ ps auxww|grep X
root      4368  5.3  0.0 296648 37364 tty7     Ssl+ 18:23   0:00 /usr/bin/X
:0 vt7 -nolisten tcp

3.14:
[   346.490] (**) ModulePath set to "/usr/lib/xorg/modules"
[   346.490] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or
'vmmouse' will be disabled.
[   346.490] (WW) Disabling Mouse0
[   346.490] (WW) Disabling Keyboard0
[   346.490] (II) [KMS] drm report modesetting isn't supported.
[   346.490] (EE)
[   346.490] (EE) Backtrace:
[   346.490] (EE) 0: Xorg (xorg_backtrace+0x48) [0x7fbbbd731c58]
[   346.490] (EE) 1: Xorg (0x7fbbbd58a000+0x1ab949) [0x7fbbbd735949]
[   346.490] (EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0
(0x7fbbbc3c5000+0xf880) [0x7fbbbc3d4880]
[   346.490] (EE)
[   346.490] (EE) Segmentation fault at address 0x0
[   346.490] (EE)
Fatal server error:
[   346.491] (EE) Caught signal 11 (Segmentation fault). Server aborting
[   346.491] (EE)
[   346.491] (EE)
Please consult the The X.Org Foundation support
   at http://wiki.x.org
 for help.
[   346.491] (EE) Please also check the log file at "/var/log/Xorg.0.log"
for additional information.
[   346.491] (EE)

Kernel config:
http://home.comcast.net/~jpiszcz/20140331/3.14.txt

Kernel diffs:

$ diff -u config-20140331.1396303540 config-20140320.1395308867 | grep \^+
+++ config-20140320.1395308867  2014-03-20 05:47:47.508584015 -0400
+# Linux/x86 3.13.6 Kernel Configuration
+CONFIG_UIDGID_STRICT_TYPE_CHECKS=y
+CONFIG_MICROCODE_INTEL_LIB=y
+# CONFIG_CC_STACKPROTECTOR is not set
+# CONFIG_SCSI_AIC7XXX_OLD is not set
+# CONFIG_CPU_THERMAL is not set
+# CONFIG_GENERIC_PHY is not set

$ diff -u config-20140331.1396303540 config-20140320.1395308867 | grep \^-
--- config-20140331.1396303540  2014-03-31 18:05:40.775863929 -0400
-# Linux/x86 3.14.0 Kernel Configuration
-CONFIG_HAVE_CC_STACKPROTECTOR=y
-# CONFIG_CC_STACKPROTECTOR is not set
-CONFIG_CC_STACKPROTECTOR_NONE=y
-# CONFIG_CC_STACKPROTECTOR_REGULAR is not set
-# CONFIG_CC_STACKPROTECTOR_STRONG is not set
-# CONFIG_ZSMALLOC is not set
-# CONFIG_NETFILTER_XT_MATCH_IPCOMP is not set
-# CONFIG_NETFILTER_XT_MATCH_L2TP is not set
-# CONFIG_GENWQE is not set
-# CONFIG_I40EVF is not set
-CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
-# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
-# CONFIG_I2C_ROBOTFUZZ_OSIF is not set
-# CONFIG_ACPI_INT3403_THERMAL is not set
-# CONFIG_DW_WATCHDOG is not set
-# CONFIG_MFD_MAX14577 is not set
-# CONFIG_MFD_LP3943 is not set
-# CONFIG_DRM_I915 is not set
-# CONFIG_DRM_BOCHS is not set
-# CONFIG_FB_OPENCORES is not set
-# CONFIG_USB_MUSB_HDRC is not set
-# CONFIG_USB_DWC2 is not set
-# CONFIG_USB_SERIAL_MXUPORT is not set
-# CONFIG_USB_OTG_FSM is not set
-# CONFIG_RTC_DRV_ISL12057 is not set
-# CONFIG_HP_WIRELESS is not set
-CONFIG_GENERIC_PHY=y
-# CONFIG_BCM_KONA_USB2_PHY is not set
-CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
-CONFIG_PANIC_TIMEOUT=0



Justin.