[Bug 203731] New: amdgpu wrong refresh rate for hdmi output with deepcolor turned on

[Bug 203731] New: amdgpu wrong refresh rate for hdmi output with deepcolor turned on

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203731

            Bug ID: 203731
           Summary: amdgpu wrong refresh rate for hdmi output with
                    deepcolor turned on
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.19.45
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: sss123next@list.ru
        Regression: No

Created attachment 282971
  --> https://bugzilla.kernel.org/attachment.cgi?id=282971&action=edit
xorg server log

i have 3 display setup (dvi, dp, hdmi), displays on dp and hdmi are 10bit
displays, if i turn on deepcolor option on amdgpu driver, hdmi display got
wrong refresh rate (looks too low), display supported 1920x1200@60 mode, in
xorg.log we can see what it detected properly, but instead of this display got
like 40hz, and turn black with out of range error, i have played a bit with
modes, and found what  mode "xrandr --newmode "1920x1200_73.48"  240.00  1920
2064 2264 2608  1200 1203 1209 1254 -hsync +vsync" works, display also warns
about out of range mode (58.7hz), but actually works, NOTE: this all happens
only if deepcolor driver option is turned on.

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[Bug 203731] amdgpu wrong refresh rate for hdmi output with deepcolor turned on

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=203731

--- Comment #1 from Gluzskiy Alexandr (sss123next@list.ru) ---
Created attachment 282973
  --> https://bugzilla.kernel.org/attachment.cgi?id=282973&action=edit
photo

monitor photo

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