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2023-11-30 08:31:35

Legion 5 Pro 16IAH7H 82RF - Limitations on external HDMI monitor?

I'm seeing some odd stuff from some of the control panels and such so was wondering what sort of limitations I'm dealing with and if any drivers are misconfigured. Summary:

- I just bought a Lenovo G34w-30 and hooked it up via HDMI. Seems to be working ok so far. Looks pretty good!

- nVidia Manage Display Mode says the laptop display is in Optimus (Intel Iris Xe Graphics) and can't be changed. I'm assuming this is because the nVidia "card" (GeForce RTX™ 3070Ti 8GB) can't drive more than one monitor at a time, and if an external monitor is connected it will always drive that (don't see any option to change but I don't want to change it), so the laptop display will always be driven by the "integrated graphics" in this situation.

- nVidia GPU Activity shows that the nVidia GPU is running the external monitor as I would hope. But some things displayed on the laptop built-in are shown as running on the nVidia GPU interestingly enough.

- Windows Device Manager thinks the G34w-30 is a "generic monitor" and says it's location is the nVidia GPU. I can't seem to find any better display driver for this, or any HDR ICC profiles, or anything.

- The device manager says the internal display driver is oem125.inf but the external G34w-30 is monitor.inf.

What I was hoping for:

- ICC profiles for the monitor

- some way to figure out if G-Sync will work

And I don't seem to find either......

Tags:
Your's truly, 0x3331333337206834783072
0
0
Solution
2023-12-04 23:46:31

Re:Legion 5 Pro 16IAH7H 82RF - Limitations on external HDMI monitor?

Well, I've answered my own question. The HDMI limitations I've found so far:

- Refresh rate is limited to 100Hz with the HDMI port with my monitor, but I think it's a monitor limitation because the port is supposed to be HDMI 2.1. USB-C ports on the device that will do DisplayPort 1.4 as an alternate mode will do 165Hz.

- The RTX 3070 Ti will do AMD FreeSync while calling it "G-Sync Compatible", but not over the HDMI port because FreeSync (aka VESA Adaptive Sync) uses the DP 1.4 VRR (Variable Refresh Rate) protocol which is not implemented in HDMI. Whether actual NVIDIA G-Sync (a different protocol) works over HDMI I can't confirm. HDMI 2.1 implements VRR, but for whatever reason that doesn't seem to be supported by the video card (unless it's used in G-Sync.)

- It's a little hard to tell what's a limitation on the laptop and what's a limitation on my monitor since I don't have the latest most expensive monitor to try.

I think that's all I've found so far. 

Your's truly, 0x3331333337206834783072
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Replies

Legion 5 Pro 16IAH7H 82RF - Limitations on external HDMI monitor?

2023-11-30 08:38:04

Re:Legion 5 Pro 16IAH7H 82RF - Limitations on external HDMI monitor?

Ok, will apparently I didn't click through enough walls to find the driver, but I found an ICC profile and an inf. But when I try to install the inf I get this:

(see attachment)

"no digital signature"

mmc_9Q5M1g60h4.png
Your's truly, 0x3331333337206834783072
0
0
2023-11-30 08:41:50

Re:Legion 5 Pro 16IAH7H 82RF - Limitations on external HDMI monitor?

Yet another thing, the monitor listing advertises 160Hz/170Hz, but the windows settings don't let me set it to anything above 99.98Hz.
Your's truly, 0x3331333337206834783072
0
0
Solution
2023-12-04 23:46:31

Re:Legion 5 Pro 16IAH7H 82RF - Limitations on external HDMI monitor?

Well, I've answered my own question. The HDMI limitations I've found so far:

- Refresh rate is limited to 100Hz with the HDMI port with my monitor, but I think it's a monitor limitation because the port is supposed to be HDMI 2.1. USB-C ports on the device that will do DisplayPort 1.4 as an alternate mode will do 165Hz.

- The RTX 3070 Ti will do AMD FreeSync while calling it "G-Sync Compatible", but not over the HDMI port because FreeSync (aka VESA Adaptive Sync) uses the DP 1.4 VRR (Variable Refresh Rate) protocol which is not implemented in HDMI. Whether actual NVIDIA G-Sync (a different protocol) works over HDMI I can't confirm. HDMI 2.1 implements VRR, but for whatever reason that doesn't seem to be supported by the video card (unless it's used in G-Sync.)

- It's a little hard to tell what's a limitation on the laptop and what's a limitation on my monitor since I don't have the latest most expensive monitor to try.

I think that's all I've found so far. 

Your's truly, 0x3331333337206834783072
1
1

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