On 07/12/2012 04:06 PM, David Crick wrote: > On Thu, Jul 12, 2012 at 6:47 PM, zxq9<[log in to unmask]> wrote: >> On 07/11/2012 08:03 PM, Dr Andrew C Aitchison wrote: >> Just helped a guy out in the slforum IRC yesterday with this same problem on >> SL 6.1 (nVidia graphics on his system -- the graphics drivers aren't the >> issue). The resolution was a downgrade. > I just pulled the latest set of updates with all the drivers on my Machine B. > > Rebooted and once trying to start X the KDE loading screen just flickered and > flickered (as in the actual MONITOR was flickering on and off). When I returned > to it later it had bombed out back to the login screen. > > Tried yum --downgrading the xserver, but wasn't having it. > > Tried yum --downgrading ALL the 47 just-installed updated packages but > it complained that only upgrading was allowed. > > Had to manually download each of the 47 base OS rpms (thank goodness > for tab-complete in lftp!) and then do an rpm -ivh --force --nodeps *.rpm > > Rebooting and now working off the original OS packages. (Indicentally, I > discovered this problematic Machine B is actually running SL6.0, whereas the > OK Machine A was on 6.2) > > >> The specific problem in the xorg log was that the evdev input module >> couldn't load because of a version mismatch. There may be other mismatches, >> but that was the point xorg gave up. >> >> Whenever the graphics drivers load first GDM will display but no input is >> possible, if the graphics is scheduled after evdev then x won't give you a >> graphical indication that anything is moving. > > Pat, does the evdev bit above give you a clue as what else might need > to be recompiled/updated? > > > David. An updated evdev was posted yesterday, that should resolve it. You may need to do a 'yum clean all' to get the updated metadata. Let me know. Pat -- Pat Riehecky Scientific Linux Developer