- Oct 14, 2011
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- 18,510
Hey folks
Just thought I'd share with you a fix that worked for me for what seems to be a common problem and took me a while to figure out.
I have a 2006 MacBook Pro with the ATI Radeon X1600 graphics running Windows 7 ultimate in Boot Camp.
The problem I was having was that when I connected an external monitor via HDMI cable (with a DVI to HDMI adapter), the display would shrink and be surrounded by a thick black border, it would also become quite blurry. I discovered this to be the result of 'Overscan'. I didn't get this problem while connected by DVI cable.
I disabled overscan on the monitor which did change the thickness of the border but did not get rid of it.
While searching, the common answer I kept coming across was to disable overscan using Catalyst Control Center, but as many Mac owners may know, installing CCC on a Mac boot camp Windows can be troublesome if even possible!
I found that if I booted up while connected by DVI cable then swapped to HDMI while in Windows, the border would stay gone...until I rebooted or woke up from sleep (but that's a whole 'nother thread!).
I then thought if I can’t install CCC to change the setting for me, I could maybe just change a setting in the registry myself.
After much searching I came across a few threads talking about which registry settings to change, most related to finding an 'underscan' or 'overscan' key in the reg and usually to do with Media Centre. I found a few keys relating to this and tried setting them first at 0 and then 1 (rebooting in-between), which made no difference.
Eventually I came across a key with the name 'DALR6 DFP 1920x1080x0x59', I knew my resolution was set to 1920x1080 and 59Hertz so I figured this was my current setting, the value was a REG_BINARY with a whole lot of 0's as the value, I remembered one thread I came across mentioned a long number with all 0's but with one 8 in it (although the name of theirs was something like 'overscan').
So anyway, I noticed mine had one lonely 8 in-between all these 0's, so I thought I'd give it a shot.
The location was HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video\{F919BA70-85CB-4C9B-AA7C-2FC7404F4FC2}\0000
In 'Video' was another 8 folders with similar long letter/number names and I went through them all before spotting my resolution.
I backed up the registry key before modifying it and then changed the 8 to a 0. Closed everything down and rebooted.
When it restarted my display was a full crisp 1920x1080 HD and has been ever since!
I've spent a long time trying to fix this and almost gave up after failing to install CCC (even after a fresh install), so I hope this can help someone else with a similar problem.
Cheers
Carl
Just thought I'd share with you a fix that worked for me for what seems to be a common problem and took me a while to figure out.
I have a 2006 MacBook Pro with the ATI Radeon X1600 graphics running Windows 7 ultimate in Boot Camp.
The problem I was having was that when I connected an external monitor via HDMI cable (with a DVI to HDMI adapter), the display would shrink and be surrounded by a thick black border, it would also become quite blurry. I discovered this to be the result of 'Overscan'. I didn't get this problem while connected by DVI cable.
I disabled overscan on the monitor which did change the thickness of the border but did not get rid of it.
While searching, the common answer I kept coming across was to disable overscan using Catalyst Control Center, but as many Mac owners may know, installing CCC on a Mac boot camp Windows can be troublesome if even possible!
I found that if I booted up while connected by DVI cable then swapped to HDMI while in Windows, the border would stay gone...until I rebooted or woke up from sleep (but that's a whole 'nother thread!).
I then thought if I can’t install CCC to change the setting for me, I could maybe just change a setting in the registry myself.
After much searching I came across a few threads talking about which registry settings to change, most related to finding an 'underscan' or 'overscan' key in the reg and usually to do with Media Centre. I found a few keys relating to this and tried setting them first at 0 and then 1 (rebooting in-between), which made no difference.
Eventually I came across a key with the name 'DALR6 DFP 1920x1080x0x59', I knew my resolution was set to 1920x1080 and 59Hertz so I figured this was my current setting, the value was a REG_BINARY with a whole lot of 0's as the value, I remembered one thread I came across mentioned a long number with all 0's but with one 8 in it (although the name of theirs was something like 'overscan').
So anyway, I noticed mine had one lonely 8 in-between all these 0's, so I thought I'd give it a shot.
The location was HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video\{F919BA70-85CB-4C9B-AA7C-2FC7404F4FC2}\0000
In 'Video' was another 8 folders with similar long letter/number names and I went through them all before spotting my resolution.
I backed up the registry key before modifying it and then changed the 8 to a 0. Closed everything down and rebooted.
When it restarted my display was a full crisp 1920x1080 HD and has been ever since!
I've spent a long time trying to fix this and almost gave up after failing to install CCC (even after a fresh install), so I hope this can help someone else with a similar problem.
Cheers
Carl
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