I've hit this on Ubuntu 18.04 (xorg 1.19.6), modesetting driver. I have opened a bug over there in case someone on that side has time to investigate (https://bugs.launchpad.net/ubuntu/+source/xorg- server/+bug/1776447)
Interestingly, if I use VirtualGL as a true GLX proxy.. VGL_READBACK=sync LIBGL_ALWAYS_INDIRECT=1 VGL_DISPLAY=192.168.128.163:0 VGL_LOGO=1 vglrun +v /opt/VirtualGL/bin/glxspheres64 .. which I'm pretty sure it was never designed to do, things run successfully. So IGLX obviously isn't catastrophically broken .. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1776447 Title: Indirect GLX (LIBGL_ALWAYS_INDIRECT=1) causes opengl programms to crash To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1776447/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
