Mojave betas on MacPro 4.1 flashed to 5.1 experiences

[latndude]

I had the Nvidia card OEM 120 that came with the Mac Pro 2009, I have 3 drives , 2 are regular ATA drives , one a SSD drive where Mojave is working . I replaced the original card with a AMD Radeon Mac Edition 7590 tried to install Mojave , but it only installed by bypassing the video card check from the installer by using a command line and installed the first beta without problems. After that all the other betas have installed automatically without problems . The only problems I encounter was that the iSight camera and the brightnes control on the keyboard no longer works.I have tried using the post install patch but it will not work , the patch says that this computer is natively supported ... so I booted into one of the other drives that are runnin Sierra and also the camera and all the USB ports of the LED Cinema Display are not responding . I checked the USB tree in the System Info and it shows that the port where the display connects ,as USB , no recognition of the display . Also if i try to upgrade the other disks to HIGH Sierra it asks for a firmware upgrade and since the 7590 doesnt show a boot screen it wont work ... So perhaps I need to get a WEB Cam to get video and audio input and place back the original video card to get the firmware upgrade going ... But so far not too bad for an old machine
Update : Replaced the 24 ' LED monitor , I most certain now that the USB controller on the Cinema Display gave up and that was what was causing the iSight and Keyboard brightness controls not to work. Its all good now , this computer has been remarkable good , going into a 10th year and huming along , next step an internal WIFI /Bliuetooth 4.0 card replacement and that will bring it up to most things needed to run Mojave perfectly well -

 

[Zeke D]

I'm running a 2009 4.1>5.1 with a GT8800 and 4x 2GB non-ECC memory. The 8800 seems to have random issues where I need to unplug and replug the DVI to get it working properly, but the happens on High Sierra too. I have a GT120 floating around, as well as a pair of windows Q4000. A pair of 1TB apple-branded drives (one seagate, one hitachi.) I upgraded the wifi to a BCM94322MC. it's slow as all heck, and I get regular graphics glitches. I have a 120GB kingston SSD in a retired 2011 MBP that I can switch to, but I think that a metal-compatible graphics card is the way to go. I'll be keeping my eye out for a GTX680 on eBay.