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Month: April 2012

NPS/RADIUS problem with VMware ESX 4.1 to 5.0 upgrade

NPS/RADIUS problem with VMware ESX 4.1 to 5.0 upgrade

I encountered a strange problem so I thought I’d post about it. We upgraded many VMware 4.1 ESX nodes to 5.0, and for the most part it went fine.  However after the upgrade, our wireless users couldn’t authenticate on the internal network, but the guest network still worked fine.  We were using a variety of Cisco access-points and they had worked perfectly fine with RADIUS auth before the upgrade.  I tracked down the error, the RADIUS server (now called Network…

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Optoma HD700X white lines fix

Optoma HD700X white lines fix

I was given an Optoma HD700X projector for free, but it was broken.  About every 15 pixels across, there was a vertical white line.  I googled a bit and it seems that this happens fairly often on Optoma projectors (even shortly after they are bought).  It found that it was likely the main board that was in need of repair. I called Optoma, and they said the main board was $270.  Since this was free, I didn’t want to pay…

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