jordan Regarding JMGO O1 Pro, when I first started using it 2 years ago and put it in Room2. I still wanted to set the brightness a tad lower, cause room is not well lit, and couldn't do it by hardware so I used X11's software to do so. I remember having some eyestrain with it at the time. Later on I moved it to the living room and the laser light broke last summer. After repair and using it mainly at night without software dimming probably fixed the issue of slight eyestrain. Brightness cannot be set, meaning there is probably no PWM.

For Linux drivers I use amdgpu for AMD and mesa for Intel. Might be worth buying a low-end A380 and comparing results. This should be a cheaper solution than pricey AMD W5500 PRO.

    zimci

    Okay guys,

    did some testing on the monitor Samsung SJ55W (Monitor 2) that has been giving me problems for 3 years until I switched to Intel ARC (Setup2) in December. I must say there was a noticeable difference when I just switched back to AMD Setup1 minutes ago.

    The monitor settings and cabling are the same, but when I use this LCD inversion test there is a noticable flicker in AMD Setup1 on 4a and 5 pattern, especially at 60Hz and less pronounced at 75Hz, whereas Intel ARC Setup2 produces a clear picture both on 60Hz and 75Hz.

    Maybe AMD driver was truly the problem all along and the VA panel is actually not faulty as I always thought. All in all I am coming on to something and might try buying an Intel card for testing other setups, too!

    I tried some other tests as well, Samsung panel seems to fare the best in these, especially paired with Intel ARC. To repeat, I am using Linux on both mentioned setups (PopOS for Setup1 and Nobara for Setup2), no Windows test.

      11 days later
      Monitor:       HKC VG275QM (27 inch)
Panel:         HVA (8 bit)
Resolution:    2560 * 1440
Brightness:    100%
Refresh rate:  170hz
Graphics Card: Intel Arc A380 (also tried AMD RX6400, eyestrain free too)
Cable:         DisplayPort
OS:            Ubuntu 24.04
Eyestrain:     Eyestrain free

      I bought a new display: HKC VG275QM, the HVA panel is similar to VA panel but with high refresh rate. This display is very soft and great for eyes. This is my fifth monitor, and now I feel that the VA screen is the most comfortable and eye friendly.

        eDenon-2 what driver/driver version are you running with the arc? Display port or HDMI? Any specific settings you had to change ?

            eDenon-2 Monitor: HKC VG275QM (27 inch)
            Panel: HVA (8 bit)
            Resolution: 2560 * 1440
            Brightness: 100%
            Refresh rate: 170hz
            Graphics Card: intel Arc A380
            OS: Ubuntu 23.10
            Eyestrain: Eyestrain free

            I see Arc A380 video cards can be had for cheap, when I look for HKC VG275QM on Amazon I see an Asus monitor with that product ID, is that the same monitor?

            Interesting to see a Refresh rate that high

                8 days later

                eDenon-2

                That is great to hear! Are you sure HKC's monitor is a true 8bit panel? Did you try to pair it with any other graphics card as well?

                    9 days later

                    zimci I only know its a HVA panel, but not sure if it's true 8bit. I also tried AMD RX6400 card, and I feel it's the same as Arc A380.

                        7 days later

                        eDenon-2 Good to hear. I also bought an 24.5'' HKC VG255 SE with IPS panel, actually two. Their QC is a bit unreliable, had to return their 27'' 2k monitor T2752Q (new IPS model, not VA), because it was pretty bad. I use the monitors on an AMD R9 380, they are really soft on the eyes, although I use them on 0 brightness and 0 contrast…

                            eDenon-2 any chance you'll try windows on the arc eventually? Even without buying it you can run it without activation

                              6 days later

                              jordan No, I feel the AMD card is the same as Intel Arc, just the colors are the same. And I wont use Microsoft things, even try without activation.

                                7 days later

                                eDenon-2 hey - what brand is your Intel A380 card? I can't seem to find a genuine Intel variant, only Sparkle and ASRock…

                                    Gurm If it works the way I think it does (i.e with AMD/NVIDIA) the various brands should theoretically be identical, but in reality they can sometimes have VBIOS variance. Some of which can be forced temporal dithering or other problems.

                                    • Gurm replied to this.

                                        JTL yeah, sourcing the actual Intel card variants is hard in this case - they only made them for the initial series (770/750) and while a 750 can still be had (for ~$200) the 770 is all back stock or used and will run double that amount easily. The 580 never had a reference board, and it's not clear the 380 did either, so I was curious what brand 380 eDenon-2 had since that VBIOS would most likely be "safe".

                                        He says it's Gunnir, which is unfortunately an APAC-exclusive brand. My options to get it in the USA are limited. So I'm going to grab an Intel reference board 750 and keep my fingers crossed. It'll run me $239 from Amazon, which is a bit of a premium, but worth it if I can use it for a few years without pain. I could grab one locally for $200 (for an unopened box model) or even less on the secondhand market. But at Amazon I can return it...

                                            Gurm Actually from the several graphics cards I have tested, besides NVIDIA, they dont support Linux, the Intel A380 and AMD RX6400 have the same color, and both eyestrain free. So AMD is also safe. From the several monitors I have tested, I find HVA panel is more eye protected than FAST-IPS, this is very important. And I tested them all via DP cable.

                                                dev