Hello,
just bought the CAC-1170 for my MacBook Pro 15 Mid 2014 (without external graphic card).
MacBook Pro -> UHD TV -> works with 4K ( 3840 x 2160 with 30Hz).
MacBook Pro -> CAC-1170 -> UHD TV -> NO SIGNAL
If I use CAC-1170 on Mini DisplayPort I do not receive any signal on TV. Mac recognize a TV, but the screen is black.
If I use the default HDMI Port, I can see 4K with 30Hz.
Does anyone has the same problem and has already fixed it?
best regards
David Lee
Here’s a bump for your thread, plus what I learned:
0) disable csr on your mac as shown here: http://www.madrau.com/support/support/srx_1011.html
1) Install switchresx (madrau.com)
2) make a custom resolution like shown here: http://www.madrau.com/srx_howtouseit/srx_howtouseit/srx_timings.html
3) save, reboot, fire up the switchresx daemon if not running already
4) choose the custom resolution you created from the menu. Done.
Hope that helps, now here’s my fairly similar info, so I am jumping into this thread:
Source: Mid-2015 Macbook Pro Retina, Intel Iris Pro integrated graphics (HD 5200). El Capitan.
Adapter: Club3d CAC-1170, REV: A2-00, FW: V7.23, 1615
Cable: https://www.hama.com/00122105/hama-high-speed-hdmi-cable-plug-plug-ethernet-gold-plated-30-m?bySearch=122105
Target: Samsung UE49KU6172 UHD TV
Method:
1) on the tv: “HDMI UHD Color -> on”
2) on the laptop: used switchresx (what a mess with csr, dammit apple…)
Results:
1) UHD@50 works. I think I verified it’s truly 50Hz (ufotest), not so sure about chroma 4:4:4. Can someone link an image I am supposed to open and read what’s up?
2) UHD@60 does not work, I get this: http://i.imgur.com/e1csm2P.jpg (blank screen with a 1cm tearing strip on top, and that’s it). Did anyone see anything like this?
Now, this link https://k.kramerav.com/support/bwcalculator.asp claims both uhd@50 and uhd@60 use the same amount of bandwidth (nearly 18Gbps). If that is true, that vindicates my cable, because uhd@50 works. There’s no point in getting a shorter cable? Or another cable?
I also think adapter works as advertized, because uhd@50 works, and the tv is recognized by macos, I can use tv’s sound output etc..
Questions:
1) How do I force/check/verify 8 bit color depth in El Capitan / switchresx ? Seems it’s fixed to ‘millions of colours”.
2) Dunno what to do here, fam.. Any ideas?
PS – the tv manual says:
1) its native resolution is uhd@60
2) It mentions the clock rate to be 594 MHz, and horizontal rate to be 112.5 KHz for uhd@50, and 135 KHz for uhd@60. I can’t get those figures in switchresx, figures change on their own as I move down the form..
OK, there’s a shot, maybe someone can help. Thanks!
Success! For future reference:
On the Samsung UE49KU6172 TV:
1 – HDMI cable goes into the HDMI1/DVI port
2 – Select HDMI1/DVI in Sources, then up arrow > edit > switch over to PC
3 – In Settings turn on “HDMI UHD COLOR” and make “Picture Mode” to be “Dynamic” as opposed to “Standard”.
As for the mac, all you need is the [latest] SwitchResX and a custom resolution like this: http://imgur.com/a/EAs8b
What kept me back:
1 – At first I installed some old version of switchresx, when I removed it all sorts of files remained put, and tampered with later testing. I removed every last file which mentions switchresx and now a fresh install actually works.
2 – The Settings menu doesn’t let you rename ports, I actually had to read the manual (gasps) to see it exists, and how it’s done
3 – Switching Picture mode to Dynamic was the final step to success, and it was a random effort 🙂
Hope this helps, bye everyone 🙂
