- Joined
- Jun 6, 2012
- Messages
- 36
- Motherboard
- Asus Prime Z270-P
- CPU
- I5 7500k
- Graphics
- Nvidia GTX 980ti
- Mac
- Mobile Phone
Hi, hopefully someone can help me.
I've recently upgraded my machine from a GTX 660 to GTX 780 and subsequently started using the NVIDIA Web drivers. With my old screen that used DVI, it worked perfectly - boot, sleep, wake from sleep etc.
Then I purchased the Dell U2515H monitor that has only Mini Displayport's, no DVI. If I boot into Windows 8.1 or Windows 10, the machine works fine, screen displays at BIOS boot and Windows boot, no problem - so I know it works.
If I boot into Yosemite 10.10.3 then I get a blank screen, but I know its booted okay. The monitor power light slowly flashes and the display says 'no signal going into power save mode'. The strange thing is if I change the input on the monitor to HDMI and then back to Mini Displayport, I see the login screen.
I've tried Storks recommendations of disabling Internal Graphics in my Z77-DS3H BIOS and boot from PCI only, no joy. Also I have the right nrv_drv=1 kext-dev-mode=1 in the Kernel Flags in the org.chameleon.Boot.plist file.
I'm sure its a Power Management issue on the driver but don't know where to start without breaking something.
Does anyone have any ideas on this problem please? Thanks for your great support community.
I've recently upgraded my machine from a GTX 660 to GTX 780 and subsequently started using the NVIDIA Web drivers. With my old screen that used DVI, it worked perfectly - boot, sleep, wake from sleep etc.
Then I purchased the Dell U2515H monitor that has only Mini Displayport's, no DVI. If I boot into Windows 8.1 or Windows 10, the machine works fine, screen displays at BIOS boot and Windows boot, no problem - so I know it works.
If I boot into Yosemite 10.10.3 then I get a blank screen, but I know its booted okay. The monitor power light slowly flashes and the display says 'no signal going into power save mode'. The strange thing is if I change the input on the monitor to HDMI and then back to Mini Displayport, I see the login screen.
I've tried Storks recommendations of disabling Internal Graphics in my Z77-DS3H BIOS and boot from PCI only, no joy. Also I have the right nrv_drv=1 kext-dev-mode=1 in the Kernel Flags in the org.chameleon.Boot.plist file.
I'm sure its a Power Management issue on the driver but don't know where to start without breaking something.
Does anyone have any ideas on this problem please? Thanks for your great support community.