12 Replies Latest reply: May 8, 2012 5:34 AM by Michael69 RSS

Blank screen with HD2000/3000 and our fullscreen allegro-based application

Michael69 Community Member
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we're distributing a program which uses the free allegro library (Version 4.2.3) to present test programs in fullscreen mode. Since the new second generation intel core-i with its processor graphics the output is almost completely blank in fullscreen mode.

The funny thing: Connecting a secound monitor, forcing the driver to switch to dual monitor mode, all works fine...on both displays!


Using the latest drivers isn't possible in all cases (may depend on the update policy of notebook manufacturers e.g.), but at least this problem occurs with all driver versions until


This strange behavior has been reported from several of our customers, all with devices equipped with second generation intel core-i, even in connection with dedicated graphics from AMD or nvidia.


Anyone seen this before?

Known bug?





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