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I am sorry to hear that have issues with HDMI signal after suspend mode.
Please test the latest video drivers for your graphics controller and report back and findings:
https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Graphics&ProductLine=Laptop+graphics+drivers&ProductProduct=3rd+Generation+Intel%C2%AE+Core%E2%84%A2+Processors+with+Intel%C2%AE+HD+Graphics+2500&ProdId=3711&LineId=1101&FamilyId=39 https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Graphics&ProductLine=Laptop+graphics+drivers&ProductProduct=3rd+Generation+Intel%C2%AE+Core%E2%84%A2+Processors+with+Intel%C2%AE+HD+Graphics+2500&ProdId=3711&LineId=1101&FamilyId=39
Filter by operating system version and install the driver when it finishes downloading, to verify that your system will
accept it.
Allan.
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Hello, I've updated the driver to the latest version, but the problem remains the same.
The only way I've found to not have the issue, is to install the generic VGA driver from MS Windows. But that is unacceptable, for the absence of hardware acceleration, or directx.
As mentioned, Linux has no problems.
I have this issue since I buy the PC.
Please, help.
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I just tested driver version 3345 on couple of Intel boards using HDMI connections, stand by and hibernation modes using different multi monitor settings and I was able to get video out of the HDMI.
I recommend checking with your computer manufacturer for customized drivers or even have them check HDMI ports on your computer.
Allan.
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Hello, I have made several tests. I have installed the latest driver: 10.18.10.3496.
The hardware is OK because it works 100% perfect undet Linux.
It must be a driver issue. What else?
Whenever ths PC awakes from suspend, the HDMI output is disabled.
The only way I have to activate hdmi output, is by reseting the driver with this script:
@echo off
cd c:\devcon
devcon restart *DEV_0152
After execute that, the HDMI output is activated again. So, it is the driver, isn't it?
Thank you