On Sat, Mar 10, 2018 at 12:02 PM D. Hugh Redelmeier via talk <talk@gtalug.org> wrote:
According to <http://www.dell.com/ed/business/p/dell-u3011/pd> the monitor has
DisplayPort, audio connectors (supports 5.1 channel audio connection), two HDMI 1.3 and two DVI-D connectors with High-Bandwidth Digital Copy Protection (HDCP).
So the right way of connecting to a T450 should be DisplayPort to DisplayPort.
I've switched out the ThinkPad for a T480, which has *no* DisplayPort connector but brings back HDMI (lower resolution with the Dell monitor) and forces me to spend seventy bucks on a new cable (USB-C to DisplayPort). After the screen blanks, the monitor refuses to wake up. Sometimes, corrupt images (very gradually) appear in bands. When the monitor is asleep, Fedora thinks it's still there and leaves open windows on it, completely inaccessible. Powering it off and on does nothing, and it needs to be unplugged/reconnected. Am I missing a BIOS setting? (There were many that needed to be set initially.) Is this a driver problem or should I file a bug? Happens on Xorg and Wayland. Mike