I have what sounds like a fairly common issue – a monitor connected to a UGA-2K-A flickers/flashes intermittently.
The full hardware picture is that I have a MacBook Air (newest model, with core i7) with two external monitors. One is a 21" Dell LCD directly connected to the MacBook Air via the displayport–>DVI adapter. The second is a SyncMaster 191TPlus connected to the UGA-2K-A with a DVI cable, connected back to the MacBook Air via a USB 2.0 hub (which happens to be a Plugable 10-port powered hub).
WIth some frequency (already three times while typing this message), the monitor connected to the UGA-2K-A goes black, and then comes back a second or two later. The LED on the monitor does not blink or flash when this happens – it stays solid green.
The MacBook Air is running OS X 10.7.3.
When I look in the system properties and look at the UGA-2K-A, it shows the following:
Product ID: 0x0378
Vendor ID: 0x17e9 (DisplayLink (UK) Ltd.)
Serial Number: 604224
Speed: Up to 480 Mb/sec
Location ID: 0xfa131000 / 11
Current Available (mA): 500
Current Required (mA): 500
I should point out that I have had the UGA-2K-A device for at least three weeks, but this problem only started a few days ago. I have not updated any video drivers, unless something was embedded in a regular OS X update.
Any recommendations on how to resolve this?