We are also experiencing such problems on a range of different notebooks with an Intel HD Graphics 520 (Skylake generation). We tested multiple Fujitsu Lifebook E746 with their onboard VGA connector and a ThinkPad T460s with different adapters from DisplayPort, under both Ubuntu 16.04 with kernel 4.4 and Ubuntu 16.10 with kernel 4.8.
In a few cases (certain combinations of notebooks and projectors) we got a working VGA connection, bust mostly not. If a connection could be established, it was stable. It seems that VGA ports on Linux with Skylake GPUs are completely unreliable. According to http://www.anandtech.com/show/9483/intel-skylake-review- 6700k-6600k-ddr4-ddr3-ipc-6th-generation/4, Skylake has no internal VGA port anymore and all VGA connectors are build using adapters, which could explain this (worse timings and signal quality for example). However, Windows 10 on the same notebooks never had a problem with VGA output in our tests, so it seems that there is still some influence of the OS. This is a major problem for our users because they absolutely rely on a working VGA connector, because when giving talks (for example on academic conferences) it is still the norm that only a VGA connection to the projector is available. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1619677 Title: Intel Skylake video: no output on VGA port To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-xenial/+bug/1619677/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
