[Bug 212279] New: AMDGPU doesn’t expose any way of setting the full RGB range [ryzen+ mobile]

[Bug 212279] New: AMDGPU doesn’t expose any way of setting the full RGB range [ryzen+ mobile]

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=212279

            Bug ID: 212279
           Summary: AMDGPU doesn’t expose any way of setting the full RGB
                    range [ryzen+ mobile]
           Product: Drivers
           Version: 2.5
    Kernel Version: all
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: ledufff@hotmail.com
        Regression: No

Hello,  I'd like to address that there's no way to set full RGB range to HDMI
for my Thinkpad E495 (AMD Ryzen 5 3500U). 
I tried editing the edid.bin with wxedid but had no luck.

Is there a plan to enable this in the near future?. 

Thanks.

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 212279] AMDGPU doesn’t expose any way of setting the full RGB range [ryzen+ mobile]

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=212279

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #1 from Alex Deucher (alexdeucher@gmail.com) ---
IIRC, the driver sets full or limited range automatically based on the EDID.

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 212279] AMDGPU doesn’t expose any way of setting the full RGB range [ryzen+ mobile]

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=212279

--- Comment #2 from Neil (ledufff@hotmail.com) ---
Created attachment 295873
  --> https://bugzilla.kernel.org/attachment.cgi?id=295873&action=edit
edid-decode

Here is the edid file for my TV (works full rgb range with windows 10)
I will try to edit the file with wxEDID now, but, it would be less tedious if
it were automatic as you say.

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 212279] AMDGPU doesn’t expose any way of setting the full RGB range [ryzen+ mobile]

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=212279

--- Comment #3 from Neil (ledufff@hotmail.com) ---
Created attachment 295875
  --> https://bugzilla.kernel.org/attachment.cgi?id=295875&action=edit
edited edid with wxedid

Got it!
I failed at editing the file first because it was a 0 byte file (didn't had my
TV connected lol!)
So.  I followed this video https://www.youtube.com/watch?v=tYYMiX7dlak
And basically did the following in my debian sid partition (I will describe it
for anyone interested): 

To find my TV edid
$ find /sys/devices/pci*/ -name edid 
Grab/copy the desired edid file to my home folder
$ cp
/sys/devices/pci0000:00/0000:00:08.1/0000:05:00.0/drm/card0/card0-HDMI-A-1/edid
~/edid.bin

Then edited that file with wxedid to change the following:
SPF: Supported features = vsig_format to 0b00
CHD: CEA-861 header = YCbCr 4:2:2 to 0
CHD: CEA-861 header = YCbCr 4:4:4 to 0
VSD: Vendor Specific Data Block = DC_Y444 to 0

Then before saving the file I clicked Options > Recalc checksum (otherwise the
system will not use your edited edid!), after that I did saved the file, and
copied that new modified edid file to /lib/firmware/edid/edid.bin 
To use the new edid, I added
'drm_kms_helper.edid_firmware=HDMI-A-1:edid/edid.bin' to /etc/default/grub (to
the line GRUB_CMDLINE_LINUX="foo")
updated initramfs with 'sudo update-initramfs -u' and then updated grub as well
with 'sudo update-grub'.

Note:  I compiled the latest wxedid from sourceforge, and, 'options > recalc
checksum' option is MISSING at least for me.  That's why the process was
failing for me.  Luckily for me debian has a wxedid in their repo that has the
recalc checksum option.  


Now...  bit of work ain't it?  I don't know if this happens because of my TV, 
I haven't tried with other monitors/televisions.  But a bit of improvement in
the matter would be GREAT.

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel