Also, I don't know if that is relevant or not, but I'm using the Mini DisplayPort connector to connect to the external monitor.
On Wed, Apr 8, 2015 at 10:03 AM, André Pinto <andredasilvapi...@gmail.com> wrote: > Hi, > > I'm having problems with having both the built-in display of my Thinkpad > T440s and an external monitor working. If I boot the system without the > external monitor connected, the built-in display works, but as soon as I > connect the external monitor the external monitor starts working and the > built-in display goes blank. If I boot with the external monitor connected, > the initial boot screens (bios, grub...) show up on the built-in display > but as soon as I get to the GDM login screen it goes blank and only the > external monitor works. > > In any of these cases, even if I disconnect the external monitor after the > built-in display stops working, it doesn't start working again (i.e. it is > not "re-enabled"). > > Both of the displays are properly enabled in the Displays configuration > screen (I've tried with both primary-secondary and secondary-primary > configurations, the problem is the same). > > Do you have any ideas about how can I solve this problem? Is it a known > issue with the T440s? > > This is the debian version that I'm using: > 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt7-1 (2015-03-01) x86_64 GNU/Linux > > Thanks in advance, > André. >
