I tried the new Ubuntu 12.04 LTS with kernel 3.4-rc5 with different monitor-configurations. When only a VGA connected monitor is used, everything works fine. The monitor doesn't go to power save after booting. This kernel seems to solve the problem of this bugreport.
But when I connect two monitors, one on the HDMI- and one on the VGA- Interface at boottime only the monitor connected to HDMI works. I can't activate the monitor on VGA-interface. The monitor an VGA-monitor stays in power save. Then I tried an other idea: When I connect the monitor on the VGA- interface at boottime the monitor works correct like descripted above, and afterwards I connect the second monitor with the HDMI-interface, both monitors works fine and show the same content (mirrored screens). Then I want to expand the display to both monitors (two independent screens). A strange effect appears: Depending on the Screen for the starter-band, the mouse can only move on one of the monitors. I can move windows from one monitor to the other monitor, but I can't get them back, because of the limitation of the mousepointer. That's amazing. I appended the dmesg-file for the case with two monitors connected via VGA and HDMI at boottime. ** Attachment added: "dmesg-file with kernel 3.4rc5 and two monitors" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/943263/+attachment/3134008/+files/dmesg.2012-05-06-18-27 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/943263 Title: PC display will not turn on with Llano APUs connected to the VGA port To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/943263/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
