This posting is a new perspective on Re: FC3 continually hanging or crashing machine. . OK when X not running. OK in FC2 I have had problems (machine freezing / locking up) running FC3 (kernel 2.6.11) on a noname laptop with an ATI Radeon Mobility M9 card. Lockup only happened while X was running - no problems in command-line mode. No problems running command line or X in FC2 (kernel 2.6.10). Earlier suggestions and other browsing leaves me at the point the freeze maybe due to the FC3 ATI video driver (I have seen this freeze problem on an IBM T21 in the past - and the problem was the video driver) I downloaded and installed the latest ATI Radeon drivers from the ATI Website No improvement in FC3. I have removed the Mesa / OPenGL package provided for Fedora and replaced with the ATI provided package and I get the problem listed at end "Invalid module format". 1. Is the "Invalid module format" problem at the end of this posting serious? glxgears runs OK under FC2 / X with this ATI fglrx package installed. 2. What has changed between FC2 and FC3 that could be the source of this ATI video problem (assuming it IS a video problem). Basic video support (I don't know about testing 3D) seemed fine in FC2. So the problem I am experiencing in FC3 must be fixable ... No ?? 3. Another thing to throw in - but probably unrelated - and less important to me The ATI package installs a utility (/usr/X11R6/bin/fireglcontrolpanel) on the Control panel to manage some of the ATI card parameters. When this is run directly on the linux machine, a dialog opens up that shows three tabs: 3.1 Information, Dual-Screen, (Gamma Adjustment) When I select the same "ATI Control" icon from a VNC session, the window displays the eror rmessage "Driver does not support X11 FireGL extensions. Panel components will display only partially" Then a window appears with two tabs 3.2 An information screen with different (limited) info from Information in 3.1 above, and , TV Out control. Weird !! Thanks Clive ************************************** [root@Linux28GHz ~]# apt-get install xorg-x11-Mesa-libGL Reading Package Lists... Done Building Dependency Tree... Done The following NEW packages will be installed: xorg-x11-Mesa-libGL 0 upgraded, 1 newly installed, 0 removed and 66 not upgraded. Need to get 377kB of archives. After unpacking 413kB of additional disk space will be used. Get:1 http://apt.atrpms.net fedora/3/en/i386/at-stable xorg-x11-Mesa-libGL 6.8.2-1.FC3.13_2.rhfc3.at [377kB] Fetched 377kB in 6s (57.9kB/s) Committing changes... Preparing... ########################################### [100%] 1:xorg-x11-Mesa-libGL ########################################### [100%] Done. [root@Linux28GHz ~]# cd /downloads/Fedora3/ATI\ Linux\ driver/ [root@Linux28GHz ATI Linux driver]# ls ati-driver-installer-8.14.13.run fglrx_6_8_0-8.14.13-1.i386.rpm [root@Linux28GHz ATI Linux driver]# rpm -ivh --test fglrx_6_8_0-8.14.13-1.i386.rpm Preparing... ########################################### [100%] file /usr/X11R6/lib/libGL.so.1.2 from install of fglrx_6_8_0-8.14.13-1 conflicts with file from package xorg-x11-Mesa-libGL-6.8.2-1.FC3.13_2.rhfc3.at [root@Linux28GHz ATI Linux driver]# rpm -ev --test xorg-x11-Mesa-libGL-6.8.2-1.FC3.13_2.rhfc3.at [root@Linux28GHz ATI Linux driver]# rpm -e xorg-x11-Mesa-libGL-6.8.2-1.FC3.13_2.rhfc3.at [root@Linux28GHz ATI Linux driver]# ls ati-driver-installer-8.14.13.run fglrx_6_8_0-8.14.13-1.i386.rpm [root@Linux28GHz ATI Linux driver]# rpm -ivh --test fglrx_6_8_0-8.14.13-1.i386.rpm Preparing... ########################################### [100%] [root@Linux28GHz ATI Linux driver]# rpm -ivh fglrx_6_8_0-8.14.13-1.i386.rpm Preparing... ########################################### [100%] 1:fglrx_6_8_0 ########################################### [100%] FATAL: Error inserting fglrx (/lib/modules/2.6.10-1.771_FC2/kernel/drivers/char/drm/fglrx.ko): Invalid module format [root@Linux28GHz ATI Linux driver]#