Also, dmesg reports that thinkpad_acpi's backlight controls are not enabled, so it is certainly not controlling the backlight in the VT:
thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver thinkpad_acpi: Standard ACPI backlight interface available, not loading native one. -- Backlight controls on ThinkPad T510 no longer function when using proprietary drivers https://bugs.launchpad.net/bugs/562005 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
