On 09/12/2016 02:12 PM, Sylviane Molinet wrote: > After last upgrade from SL6.7 to SL 6.8, nvidia driver from ELrepo > does not work properly with Cadence PCB. (Allegro) > On opening Cadence PCB we get a white window instead of a black one > with a grid. > Is this an OpenGL issue ? > Below package installed : > kmod-nvidia-367.44-1.el6.elrepo.x86_64 > nvidia-detect-367.44-1.el6.elrepo.x86_64 > yum-plugin-nvidia-1.0.2-1.el6.elrepo.noarch > nvidia-x11-drv-367.44-1.el6.elrepo.x86_64 > > kernel Linux 2.6.32-642.4.2.el6.x86_64 > > Downloading driver from nvidia and rebuilding for new kernel works > fine for PCB. > Thanks in advance for support. > I uninstalled nvidia driver with nvidia-uninstall then I installed driver from ELrepo. kmod-nvidia-340xx-340.96-1.el6.elrepo.x86_64 nvidia-detect-367.44-1.el6.elrepo.x86_64 nvidia-x11-drv-340xx-340.96-1.el6.elrepo.x86_64 nvidia-x11-drv-340xx-32bit-340.96-1.el6.elrepo.x86_64 To get more output while starting Allegro : setenv LIBGL_DEBUG verbose libGL: screen 0 does not appear to be DRI2 capablee libGL: OpenDriver: trying /usr/lib/dri/tls/swrast_dri.so libGL: OpenDriver: trying /usr/lib/dri/swrast_dri.so libGL error: dlopen /usr/lib/dri/swrast_dri.so failed (/usr/lib/libLLVM-3.6-mesa.so: symbol _ZNSt15__exception_ptr13exception_ptrC1Ev, version CXXABI_1.3.3 not defined in file libstdc++.so.6 with link time reference) libGL error: unable to load driver: swrast_dri.so libGL error: failed to load driver: swrast Termination codes: exit=3, signal=11, errno=11 adding /usr/lib/nvidia to LD_LIBRARY_PATH fixed the error I hope this will be useful for Allegro PCB Designer. Sylviane Molinet