Announcement

Collapse
No announcement yet.

AMDGPU Linux Driver Preparing To Better Support Modern HDR/OLED Displays

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • AMDGPU Linux Driver Preparing To Better Support Modern HDR/OLED Displays

    Phoronix: AMDGPU Linux Driver Preparing To Better Support Modern HDR/OLED Displays

    It looks like with the Linux 5.7 kernel cycle this spring there should be proper backlight support when using this AMD Radeon kernel graphics driver with modern HDR/OLED displays...

    http://www.phoronix.com/scan.php?pag...play-Backlight

  • #2
    What about supporting more than 2 audio channels out the HDMI port? I’d love to get 6 for 5.1 surround sound.

    Comment


    • #3
      Controlling the "backlight' on an OLED display?

      (hint: OLED displays aren't backlit)

      Comment


      • #4
        Originally posted by Trevelyan View Post
        What about supporting more than 2 audio channels out the HDMI port? I’d love to get 6 for 5.1 surround sound.
        That has been supported for years.

        Comment


        • #5
          Is this jyst for displayport, or will it work on hdmi too?

          Comment


          • #6
            And still no control panel for human beings for fuck's sake.
            How do I turn this on or see its status?
            Still with som cryptic commands?

            Comment


            • #7
              Display brightness/gain control over DisplayPort is a welcome trend.

              Comment


              • #8
                Originally posted by Danny3 View Post
                And still no control panel for human beings for fuck's sake.
                How do I turn this on or see its status?
                Still with som cryptic commands?
                Well, if you talk to people like this, you can guess how helpful they'll want to be.

                Comment


                • #9
                  Originally posted by microcode View Post

                  Well, if you talk to people like this, you can guess how helpful they'll want to be.
                  maybe one of the CoC opponents ...let him be "grumpy torvalds" in his microcosmos

                  Comment


                  • #10
                    Originally posted by agd5f View Post

                    That has been supported for years.
                    I have:-
                    • Linux 5.4.8 (Debian Buster with backports enabled)
                    • AMD Ryzen 3 PRO 2200GE w/ Radeon Vega Graphics
                    • VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev d7)
                      • Device: AMD RAVEN (DRM 3.35.0, 5.4.0-0.bpo.2-amd64, LLVM 7.0.1) (0x15dd)
                      • Version: 18.3.6
                    • Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio Controller
                    The HDMI port goes into a 5.1 Audio extractor that connect to my surround-sound system via toslink (since toslink have become rare) and via hdmi to my TV.

                    I can only get front left and front right out of it. or DTS/AC3 pass-through (which encoded 6 channels on two), I have never got 6 channel (plain) going.

                    On a kernel before 5.4 its pretty much unbootable. Currently I have amdgpu.noretry=0 set, which gets past kernel graphics init (just after grub) about 1 in 5 boot attempts. But once booted amdgpu streams non-stop errors in dmesg (CPU: 1 PID: 820 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:1954 write_i2c_default_retimer_setting+0x220/0x350 [amdgpu]).
                    Even without that kernel boot parameter its even less stable/usable. Mostly graphics would constantly freeze, until some watchdog does a gfx soft restart, also logged to dmesg.

                    My hope is things (wrt gfx) will be better once 5.5 gets into buster-backports. However I have no idea how to get reliable surround-sound.

                    Comment

                    Working...
                    X