Bug 1657434 - mutter does not support 10-bit color depth
Summary: mutter does not support 10-bit color depth
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: mutter
Version: 31
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
Assignee: Florian Müllner
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2018-12-08 04:54 UTC by udo
Modified: 2019-12-20 14:00 UTC (History)
4 users (show)

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Description udo 2018-12-08 04:54:36 UTC
Description of problem:
When setting xorg for 10-bit Depth / DefaultDepth in /etc/X11/xorg.conf we get, after restart of xorg, a desktop that is unresponsive to mouse clicks.

Version-Release number of selected component (if applicable):

How reproducible:
See above.

Steps to Reproduce:
See above.

Actual results:
See above.

Expected results:
Working desktop, responsive to mouseclicks, at 10-bit Depth.

Additional info:
There supposedly is an 'upstream' fix but this ha not reached us in many many months.

Comment 2 udo 2018-12-08 04:57:45 UTC
10-bit is per channel of RGB.
So the xorg.conf will look something like:

Section "Screen"
        Identifier "MyScreen"
        Device     "Radeon"
        DefaultDepth     30
        SubSection "Display"
                Depth     30

Comment 3 udo 2018-12-13 14:14:58 UTC
- xorg does 30 bit OK
- my monitor's specs say 3*10 bit is no problem
- the fix is 'upstream'
- so what are we waiting for?

Comment 4 udo 2019-05-05 11:09:14 UTC
Tested with fedora 30, git amdgpu and git mesa and again same behaviour.

So we have incomplete hardware support in gnome:
Not the full Depth/Defaultdepth in /etc/X11/xorg.conf *and* no fractional scaling for hiDPi screens out of the box...

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