Don't know if it helps, but I ran DRI_PRIME=1 glxinfo|grep "OpenGL renderer". Seems like the only way to get some reaction from the dedicated one other than black screen. Attached dmesg output about this.
** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1581270/+attachment/4677612/+files/dmesg.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1581270 Title: Hybrid Graphics: [drm:si_resume [radeon]] *ERROR* si startup failed on resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1581270/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
