- 1 What problem fit-Headless solves?
- 2 Does fit-Headless help in running a headless Intel NUC?
- 3 Audio support
- 4 Supported resolutions on fit-Headless emulators
- 5 How can I get more resolutions with fit-Headless 4K on OSX?
- 6 SwitchResX
- 7 Can I increase refresh rate?
- 8 Custom Resolutions
- 9 How to enable HDMI Audio support on fit-Headless GS
What problem fit-Headless solves?
On Mac Mini Server
- Screen sharing on a Mac Mini Server that has no display attached (headless) is low-resolution and slow.
On a headless PC
- One of the key requirements in using a PC without a display attached (headless PC) is remote desktop access, but in many cases configuring the headless PC to support high resolution remote desktop proves to be so challenging that sometimes users connect a display to the PC just to be able to have remote desktop access!
How fit-Headless solves the problem?
- fit-Headless is a small, low-cost HDMI plug that emulates a high resolution display. Once plugged, the Mac Mini / PC detects a connected display and enables the GPU. With the GPU enabled, screen-sharing / remote desktop access can work in high resolution.
Does fit-Headless help in running a headless Intel NUC?
Yes. See for example http://www.vfrank.org/2015/04/28/running-the-intel-nuc-headless-with-vmware-esxi/
fit-Headless solves a problem known as "AMT/vPro blank screen", see http://www.tekhead.org/blog/2015/05/
fit-Headless GS has fit-Headless DP support audio emulation.
fit-Headless and fit-Headless 4K doesn't support audio.
Supported resolutions on fit-Headless emulators
Under different OS (Windows, OSX and Linux) available resolutions may vary. Available resolutions depend on OS, display driver and GPU capabilities.
The below programmed EDID resolutions given for reference only (may be overridden by OS/GPU/driver):
|fit-Headless||fit-Headless 4K||fit-Headless GS||fit-Headless DP|
How can I get more resolutions with fit-Headless 4K on OSX?
To unleash the full potential of fit-Headless 4K under OSX we recommend the freeware utility "Display Menu" available on iTunes App Store. In most cases fit-Headless 4K will support up to 30 different resolutions:
Please also see the explanations and notes on fit-pc website:
Google+ page that shows the resolutions related to OSX operation:
SwitchResX is a tool for Apple computers to take control of any screen connected to the Mac. No matter whether a MacBook Screen, an external monitor, a Retina display, a TV set or a beamer: SwitchResX can handle them all – if you want, straight from the menubar, a contextual menu or both.
Can I increase refresh rate?
For high refresh rate, consider using fit-Headless GS
Take a look at setting up custom resolutions on your video card driver.
How to enable HDMI Audio support on fit-Headless GS
fit-Headless GS HDMI audio was qualified with NVIDIA and with Intel HD.
We did not have an opportunity to test with AMD Radeon, and AMD drivers may behave differently.
- In some cases system restart is required to enable the HDMI audio.
- Simplify the setup by connecting a single fit-Headless GS to the primary/single graphics card.
Workaround reported by our customers - AMD seems to have a 165MHz pixel clock limit when using an HDMI connection, which is exceeded when using resolutions & refresh rates higher than 1080p@60hz. Using a third-party utility ToastyX Custom Resolution Utility, import a custom EDID extension block for HDMI audio support, and remove all custom fit-headless GS resolutions from the EDID string that were higher than 1080p@60Hz. After reboot HDMI audio on the fit-headless GS should be present. Alternatively, one might be able to use the higher resolutions & refresh rates by patching the AMD Radeon driver to bypass the 165Mhz clock limit, although this can break HDCP functionality.