After spending significant time and effort to obtain "DC" screen for 8770w (which is essentially a regular IPS panel with fancy board that converts 8bpc LVDS to 10bpc DP), I have finally got and installed one. All works great, except of the one problem...
It has pretty bad banding / posterization in lower shadows. I have tried profiling it in different modes (full range, sRGB, rec709) - issue persists, and it indeed shows only in the lowest part of the characteristic curve. Mids and highlights are represented fine and show low deviation from reference values.
GPU is HP K4000M, Nvidia drivers installed "as it is", video-card is identified without a hitch.
Banding was not present with the original TN panel using the same GPU.
While checking a software side, I have noticed that Win10 has bit depth set to 8-bit...
My initial reaction was, - "Easy, let's change it in `nvidia-settings` and we're all set":
...but that would be too easy, right? After selecting 10bpc and clicking "Apply" screen went off and back on, only to show that depth stayed at 8bpc. Repeating the above few times yielded exactly the same result and I'm not in a hurry to meet a cliched (and laymen) definition of insanity.
Let's check GPU-Z. So far so good, nothing unusual. Notice the highlighted BIOS version and subvendor string:
Time to delve into other tabs. We are running WDDDM v2.4 which supports GPU dithering, but hey... BIOS version has changed!
Briefly back to `nvidia-settings` to check what is reported by vendor's own utility:
So far, we have two strings for BIOS version:
80.04.5A.00.02 (let's call it an "A") 22.214.171.124.37 (let's call it a "B")
Notice how 2nd one seems to not follow hexademical notation. Lastly, "NVIDIA BIOS" drop-down, reports "A" version:
...and monitor section which confirms that rig is indeed capable of 10bpc, but currently running at mere 8bpc:
Windows "Adapter settings", reports version "B". It's 2019, diversity is a must.
"NVidia inspector" is of the same opinion:
Now, let's use some seriously legit tools and check-in exported BIOS file in `nvflash`:
Here we have two three interesting findings:
Reported vendor is Dell, not an HP. See this link for details. BIOS version is back to "A". Have I already mentioned diversity? MXM module uses MX25L2005 flash storage in WSON-8 packaging. If things go real nasty, we should be able to rescue a patient via Pomona clip and external programmer.
Loading the same file in "Kepler BIOS tweaker" confirms the facts:
EDID settings, courtesy of NVidia Control Panel. Hex dump can be found at the bottom of this post.
...Shall I be worried about "60.02Hz" refresh rate?
Why two different BIOS versions are reported? Anything to do with UEFI (e.g. HP is sideloading its own during boot)?.. Why two different vendors reported? As far as I remember, this is branded HP GPU. Where to get "clean" BIOS of K4000M for future experiments? Ideally from 8770w equipped with "DreamColor" panel from a factory.
Link to the dumps, BIOS ROM and monitor EDID: https://mega.nz/#F!zGgRmQIL!9q2QFZtHuK2RQ-WHXMA4Mg (also attached to this post)
Hi guys, bit of a rookie to the whole EGPU scene. Currently I have:
- MacBook Pro 2015 13inch (3.1GHz Core i7 16GB RAM)
- Razer X Core
- Apple TB3 to TB2 Adapter
- TB2 Cable (Cable Matters)
- 23inch AOC External Monitor
I am wonder about what graphics card to get to run X-Plane11 with high graphic settings?
I have purgewrangler set up and ready to use with an AMD graphics card, but am also open to the idea of an Nvidia graphics card.
Any advice appreciated. I did not buy a Windows PC as I need a Mac for various other things and wanted an all-in-one laptop.
I have been attempting to change my boost clocks values for the longest time, though I've been unsuccessful. I managed to flash my modded BIOS, though no changes seem to have had happened, along with no errors either. Here's all the stuff I used and was able to get. If someone is able to help me with this, it would be greatly appreciated.
To anyone wondering about eGPUs on M6700s, its not too complicated, there is just a process that must be done on boot every time:
You need to have the eGPU connected and powered on before booting the laptop, once you get to the Intel RAID screen disconnect the eGPU and wait for windows to load up, once windows is loaded reconnect the eGPU and you *should* be able to use it and be able to hot-swap it (though you should disable it in windows before unplugging it) installing the normal AMD drivers worked fine for me, though the original release of Adrenaline 19.1 blue screened the first time.
I usually run with 3 1080p monitors attached to the 480, replaced my old i5 desktop with this laptop due to the convenience of storing everything on one machine, the laptop has a 256gb SSD and 2x 750GB hdds in raid 0, there is a 2TB WD black attached to the eSATA on the dock.
eGPU and external HDD are powered by a 500W evga desktop ATX psu, the EXP GDC's ATX power adapter was clunky and broke while trying to use it, so I just plugged in a CPU 4 pin cable upside down to power it, not worried about it because the bulk of power is coming from the 8 pin on the GPU anyway.