I found the following link: https://forum.manjaro.org/t/new-install-amd-fx-6300-wont-wake-from-suspend/39471/10
Suggesting that setting TearFree on may help (RS780L) However... I wonder if ShadowPrimary did not help. Section "Device" Identifier "Radeon" Driver "radeon" Option "AccelMethod" "glamor" #legacy "exa" Option "DRI" "3" #legacy "2" Option "TearFree" "on" Option "ColorTiling" "on" Option "ColorTiling2D" "on" Option "ShadowPrimary" "on" #only possible with "glamor" AccelMethod EndSection Note that it should be in a file /usr/share/X11/xorg.conf.d/20-radeon.conf on Ubuntu. And should rename my suggested /etc/X11/xorg.conf to xorg.conf.old. I might have temporary access to the computer in the next 48h to test it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1944991 Title: Resume with glamor cause GPU lockup/screen corruption on Radeon 3100 Graphics" (ChipID = 0x9611) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1944991/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs