Some news. I updated the kernel to 4.4.13. Now I don't have error messages is dmesg. Added radeon.dpm=1 radeon.modeset=1 to /etc/default/grub file (not sure if everything is needed). sudo update-grub and reboot Although I still cannot switch between the cards with DDIS, but I can run specific programs with the dedicated AMD, using DRI_PRIME=1 programpathname. That is already quite good, because I don't need the dedicated for browsing the web or so.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to 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 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
