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M17x R4, GTX 1070, external monitor limited to 60Hz
Alienware M17x R4
Hello! I just upgraded my M17x R4 from a GTX 675M to an MSI GTX 1070. I've also flashed the latest custom unlocked A15(+) BIOS available and have driver modded to make the GTX 1070 usable. The 1070 works perfectly.
However when I connect my laptop to a 240Hz external monitor via HDMI, I'm limited to 60Hz, even when I try to create a custom resolution using CRU (Custom Resolution Utility).
I've tried switching my laptop display mode between PEG, PCIe, and SG. SG works, but only allows me to display 60Hz to an external monitor. PEG results in the laptop beeping 8 times and not POSTing. PCIe boots fine, but doesn't recognize my 1070.
What should I do from this point? Any suggestions? Should I try Mini Displayport/VGA? Or any different BIOS settings (like force PEG every time)?
I should mention I am running the LVDS 60Hz display.
Thank you.
mattyb3
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March 13th, 2024 21:10
Firstly, the 60hz panel requires SG mode to run the 1070 as these cards usually only work with an eDP screen. like the 120Hz option. For the card to run on an LVDS display, it has to piggyback off the intel graphics which is what SG mode allows. You will always get the 8 beep LCD error if you switch to PEG with the 60hz internal display.
As far as the ability to run an external display at 240hz, you should have a Mini DisplayPort available. You won't be able to get 240hz on HDMI 1.4 so try the Mini DP.
Lotus02
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March 14th, 2024 01:07
@mattyb3
Gotcha, will report back once I've tried Mini Displayport.
mattyb3
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March 14th, 2024 03:10
@Lotus02 Good luck, let us know how you go.
Lotus02
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March 14th, 2024 20:22
Hi, just tried Mini Displayport and I can now use 120HZ. However, the monitor is still connected to the HD 4000 graphics, and Mini DP 1.2 should be able to go up to 144HZ.
mattyb3
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March 15th, 2024 00:22
I'd have to research it more but it's possible that the mDP is connected directly to the Intel graphics and not the dedicated. I can't imagine that this is true as the port wouldn't work at all with the 120hz display systems. You may just be able to make some changes in the Nvidia Control Panel.
Lotus02
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March 15th, 2024 01:22
@mattyb3 Yeah it's somewhat hard to believe that the video out ports are connected directly to the HD graphics, as I'd assume all models of the laptop used the same motherboard considering my laptop has an eDP connector. I'd try to make a custom resolution in Nvidia Control Panel, but the section where one would do that isn't there, as I can see in the PhysX configuration tab shows that the external monitor is connected to the HD graphics. I don't think I can do anything via graphics, as I've used NVCleanstall to install the modded video drivers with and without Optimus with no changes in results.
XPS_Man
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March 15th, 2024 13:38
@Lotus02 as the monitor is not using NVIDIA card, NVIDIA control panel will have a lot of options missing. Use HDMI to get direct output from NVIDIA GPU.
Lotus02
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March 15th, 2024 17:00
@XPS_Man HDMI is also connected to the HD 4000.