I'm having the same random blanking problem on a HD3450 at 19200x1200 driven through the HDMI output.
xserver-xorg-video-radeon: Installed: 1:6.9.0.91-1ubuntu4 -- [RS690M] screen randomly blanks for short times https://bugs.launchpad.net/bugs/310864 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
