Sunspark

  1. My HTC One M8:
    [2244112] m8_sharp_novatek_panel_on display_id =0xBC
    [2246803] PANEL_ID_M8_SHARP_NT35595 Cmd
    This display is non problematic.

  2. My HTC One M7, which is also non problematic has this display:
    [1588744] m7_init_display_panelid_940067
    [1591236] SHARP_RENESAS FULL HD panel
    [1708297] M7 sharp renesas cmd panel ID=0x940069
    [2230407] m7_init_backlight: panel_id=0x940069
    [2233042] PWM ic version A2

Cannot check with my girlfriend's M8, which is problematic, as it's still under warranty and she prefers not to unlock it (yet).

      Kray

      I have similar symptoms to you and Gurm - that should help us pinpoint all of the causes sooner 😉

      Anyway, like I've promised, I have an update.

      I was able to borrow a Blackberry PRIV over the weekend and while the first impressions were positive (it has very nice AMOLED display and there was no eye strain for almost 30 minutes), I sadly started to feel "that discomfort" after about 30 mins of use. Like usually, changing picture settings (warmer/colder, intensity) and brightness didn't help. So unfortunately one more off the "does no harm" list for me...

        Wow lot of information here so just going to quickly ask if anybody discovered any smartphones that don't use LED backlight at all in the screen?

          APC75 All phone's with a backlight had some form of LED I believe. Even my mother's Samsung flip-phone that's almost as old as me and had a monochrome backlit screen 😛

          *but the LED's might be different type from the one's in monitors, etc.

            optix Thanks for checking! What version of the OS are you on for the m8? Mine is M because L had a critical WiFi bug and I never tried K on it. Still haven't yet tried the Qualcomm drivers either.

                Sunspark

                My One M8 came with K, but now I'm still running L without problems.

                A friend of mine that also has M8 recently upgraded to M and I can confirm that M as an OS doesn't cause me any problems.

                  APC75

                  All OLED/AMOLED phones don't use LED backlight. In fact, they don't have backlight at all, as each pixel lights up independently.

                    a month later

                    jasonpicard Thanks for the info about the Meizu M2 Note. I looked at the laptopmedia review for the phone. Would you know at what percentage the PWM kicks in? Would you know of other reviews showing the M2 Note's PWM dimming? Thanking you.

                      JTL

                      JTL Has anyone actually done a test on the Redmi Note 3 Pro to confirm it is PWM free?

                          Has anyone used the LG G2? I have read it is PWM free, but how is it in terms of temporal dithering and overall effect on the eyes?

                            I've been messing with the HTC M8 a bit. I can't use it. I get too tired on it and I don't recommend anyone use it. I'm honestly puzzled by the statement that it can be used with no problem. I saw Gurm doesn't like it either.

                            It is possible it is related to the firmware version currently installed in the device. Messing about with developer adreno graphics drivers didn't change a thing, nor did a test with dropping down to HTC's version of KitKat for this. So since it wasn't the Android version, that leaves firmware and/or the panel/driver combination.

                            I haven't messed around with the firmware as of yet and obviously can't change the panel/driver.

                            Too bad, it's not a bad device, but I wouldn't recommend this to anyone on this forum.

                              Sunspark which phones/tablets are easy on the eyes for you? I am looking for one which does not have PWM and temporal dithering.

                                Sunspark if the e ink panel refreshes without blinking/reverse imaging too much then it will be very easy on the eyes, an ideal solution.

                                  Sunspark have you tried using it with grey/amber text on a solid black background? Slcd3 displays are very bright, so the less pixels turned on, the less strain on the eyes, maybe? Or is it a purely driver and panel problem?

                                    optix hi, any other phones you have recently come across which are ready on the eyes? Have you tried any of the Sony xperia phones?

                                        Gurm I have a very similar eye sensitivity problem. On the M8 what display settings are most comfortable for you? I would like to get an M7 or M8 but some readers do find discomfort using them.... any info on the Sony xperia phones? Could the Bravia engines help or make it worse? If there are any other phone displays you are comfortable with do let me know, thanks.

                                            Would anyone know if any of these phones are PWM free?
                                            • Moto x1, x2
                                            • Moto X Play
                                            • Xperia C3
                                            The reviews I have found haven't tested for PWM.
                                            Thank you.

                                            dev