0 Replies Latest reply on Jul 14, 2018 3:41 AM by limitingfactor

    amdgpu 18.20-606296, ubuntu 18.04 blank screen on 4k

    limitingfactor

      HW setup:   RX580, i7 4770, intel board h87rl.

      SW setup:   Ubuntu 18.04, amdgpu pro 18.20-606296 driver.

       

      Setup works perfectly fine with a NEC EA244WMi  (1980x1200 via HDMI).

       

      On my AOC 3277  (4k via HDMI 2.0) I get a blank screen, allways.

      The setup kind of works if I set 'nomodeset' and start X11 by hand. But when doing this, DRI won't function properly.

      Looking at Xorg.0.log, the proper modes seem to be identified.

      But dmesg.log shows this line:

           [drm] dce_get_required_clocks_state: clocks unsupported disp_clk 709776 pix_clk 533250

       

      Modesetting / EDID problem?

       

      Setup works on windows 10 with latest AMD driver. (and with a 950GTX with proprietary NV driver)

      Tried a different HDMI cable, to no avail.