HI,
I'm trying to evaluate the latest HD4000 processors for HTPC use.
Before deciding I decided to test the HTPC typical capabilities on my desktop with a new i7 3770 in an Asus P8Z77-V and ddr3-1600 memory.
I am testing using Windows 7 x64, mainly Media center (but sometimes also media player)
As it turns out, I have heavy corruption on start of any HD video. The corruption lasts for anything between 20s to 2min, before it stabilizes. This happens any time I switch channels on live TV (from an SD to HD channel, or switching between different HD (720p, 1080i)) channels. I also found this behaviour when trying to play back recorded TV of that type, and again when I resize the media playback window. I have of course verified, that the appropriate channels or content other wise play fine on my older systems, including a DG45ID+C5200, a DH57DD+i3-540, a DQ57TM+i5-660 and a DZ68DB+i7-2600k, each running win7 x64.
I have tried drivers from OEM site, which currently is v 2596, and generic drivers 2696 and the latest 2761. All show the same behaviour.
The release note of the latest generic driver contain the known issue:
KNOWN ISSUES IN DRIVER VERSION 2761
VIDEO PLAYBACK
Windows Media Player* application: Corruption may be seen in video playback after changing the display resolution.
Is this what I'm seeing?
If yes, are there any hopes this is going to be fixed?
Needless to say, this behaviour effectively prohibits the use of Ivy Bridge in HTPCs then.
Thx