Jonas Ådahl d092e913d6 gpu-kms: Don't add outputs without modes
There seems to be a kernel race when one disconnects an external
monitor connected to a DisplayPort via a USB-C adapter. The race
results in a connector being reported as connected, but without any
modes supported.

This had the side effect that we tried to set a preferred mode to
the first listed mode, but as no modes were available, we instead tried
to dereference the first element of a NULL array, causing a
segmentation fault.

Mitigate this by skipping adding output if no supported modes are
advertised and the output doesn't support scaling, while moving the
fallback path for calculating a preferred output mode to after possibly
adding the common modes, to avoid the unvolentary NULL dereference.

https://bugzilla.gnome.org/show_bug.cgi?id=789501
2018-02-05 10:38:54 +08:00
..
2017-12-24 17:55:14 +08:00
2015-07-05 22:01:59 -07:00
2015-07-05 22:01:59 -07:00