EMC not working after ATI driver change

I finally got EMC installed, configured, and running. The last thing was the graphics drivers. With the standard drivers the text in the gcode area of Axis was dark grey text on a grey background. Almost unreadable.

I installed new drivers as outlined here
========================================================================
Ubuntu X Team's PPA

This is an excellent PPA, frequently updated, and run by Ubuntu veterans.

$ sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
$ sudo apt-get update

At this point, you should install available updates and then you can install the driver:

$ sudo apt-get install fglrx
======================================================================
Now when I try to run EMC I get this:

Print file information:
RUN_IN_PLACE=no
EMC2_DIR=
EMC2_BIN_DIR=/usr/bin
EMC2_TCL_DIR=/usr/share/emc/tcl
EMC2_SCRIPT_DIR=
EMC2_RTLIB_DIR=/usr/realtime-2.6.32-122-rtai/modules/emc2
EMC2_CONFIG_DIR=
EMC2_LANG_DIR=/usr/share/emc/tcl/msgs
INIVAR=inivar
HALCMD=halcmd
EMC2_EMCSH=/usr/bin/wish8.5
EMC2 - 2.4.6
Machine configuration directory is '/home/rick/emc2/configs/shoptask-mill'
Machine configuration file is 'shoptask-mill.ini'
INIFILE=/home/rick/emc2/configs/shoptask-mill/shoptask-mill.ini
PARAMETER_FILE=emc.var
EMCMOT=motmod
EMCIO=io
TASK=milltask
HALUI=
DISPLAY=axis
NML_FILE=
Starting EMC2...
Starting EMC2 server program: emcsvr
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting EMC2 IO program: io
Starting EMC2 TASK program: milltask
Starting EMC2 DISPLAY program: axis
Shutting down and cleaning up EMC2...
Killing task emcsvr, PID=2295
Killing task milltask, PID=2343
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments
Cleanup done

Debug file information:
/usr/bin/emc: line 654: 2344 Segmentation fault $EMCDISPLAY -ini "$INIFILE" $EMCDISPLAYARGS $EXTRA_ARGS
2295
PID TTY STAT TIME COMMAND
2343
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

Kernel message information:
[25681.403198] I-pipe: Domain RTAI registered.
[25681.403221] RTAI[hal]: <3.8.1> mounted over IPIPE-NOTHREADS 2.6-03.
[25681.403226] RTAI[hal]: compiled with gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) .
[25681.403241] RTAI[hal]: mounted (IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs DISPATCHED), ISOL_CPUS_MASK: 0).
[25681.403246] PIPELINE layers:
[25681.403254] f83d4e20 9ac15d93 RTAI 200
[25681.403259] c085cb20 0 Linux 100
[25681.464243] RTAI[malloc]: global heap size = 2097152 bytes, <BSD>.
[25681.464560] RTAI[sched]: IMMEDIATE, MP, USER/KERNEL SPACE: <with RTAI OWN KTASKs>, kstacks pool size = 524288 bytes.
[25681.464573] RTAI[sched]: hard timer type/freq = APIC/6250189(Hz); default timing: periodic; linear timed lists.
[25681.464582] RTAI[sched]: Linux timer freq = 250 (Hz), TimeBase freq = 1700033000 hz.
[25681.464587] RTAI[sched]: timer setup = 999 ns, resched latency = 2943 ns.
[25681.464787] RTAI[usi]: enabled.
[25681.723802] RTAI[math]: loaded.
[25681.890049] config string '0x378 out '
[25685.760324] axis[2344]: segfault at 4 ip 00ad5f58 sp bfed637c error 4 in libGL.so.1.2[a62000+be000]
[25688.063661] RTAI[math]: unloaded.
[25688.320207] SCHED releases registered named ALIEN RTGLBH
[25688.336635] RTAI[malloc]: unloaded.
[25688.436112] RTAI[sched]: unloaded (forced hard/soft/hard transitions: traps 0, syscalls 0).
[25688.460215] I-pipe: Domain RTAI unregistered.
[25688.460238] RTAI[hal]: unmounted.

I am way beyond my scope, other than trying to reinstall EMC.

Thanks

Rick

dont update with patches not meant for linuxcnc , or from other repositorys . emc2 needs realtime drivers , some drivers are not compatable
which may require a change of graphic cards .

normal upgrades from ubunto sites can conflict the build requirements

1. Can anyone point me to a list of graphics cards that Lucid does support and works with EMC?

2. Is there an easy way to "Undo" the latest changes that I made?

Thanks

Rick