I have a brand new Samsung SF310 laptop and it has the same issue. Here are some clues as seen in other comments
me@mycomputer:~/acpi_call$ sudo dmidecode -s system-product-name && sudo dmidecode -s system-version QX310/QX410/QX510/SF310/SF410/SF510 04MX me@mycomputer:~/acpi_call$ lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller]) me@mycomputer:~/acpi_call$ lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep 3D 01:00.0 3D controller [0302]: nVidia Corporation GT218 [GeForce 310M] [10de:0a70] (rev a2) I'll attach my DSDT.dsl file as well It would be really great to have this issue solved soon. Thanks for all the work. ** Attachment added: "DSDT.dsl" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/312756/+attachment/1970777/+files/DSDT.dsl -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/312756 Title: MASTER: support graphics card hot switch -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
