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Subject: Re: Radeon HD 7450 brightness oversaturated
To:     Alex Deucher <alexdeucher@gmail.com>, Meelis Roos <mroos@linux.ee>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Maling list - DRI developers 
        <dri-devel@lists.freedesktop.org>,
        amd-gfx list <amd-gfx@lists.freedesktop.org>
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 <CADnq5_O-sFxVsbxouJBRYi=H+RCmc0==jB7XVTifvWm-+EQLnQ@mail.gmail.com>
From:   Meelis Roos <mroos@linux.ee>
Message-ID: <e61ee046-92fc-4e3d-02fb-c53d5699e41d@linux.ee>
Date:   Fri, 22 Mar 2019 09:02:08 +0200
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>> I decided to put a discrete graphics card into a PC and found a fitting Radeon HD 7450.
>> It works, but there is strange whiteness like the brightness is oversaturated and
>> light places turn into other colors:
>> * on fbcon, right after radeondrmfb initializes
>> * in X after powersave
>>
>> The colors return to normal after a VT switch or two.
>>
>> Screenshot of one such washed view is at http://kodu.ut.ee/~mroos/radeon_washed.jpg
>>
>> Kernels are 5.0 and 5.1-rc1.
> 
> Is it just kernels 5.0 and 5.1?  There haven't really been any display
> related changes to radeon in ages.  Possibly a duplicate of:
> https://bugzilla.kernel.org/show_bug.cgi?id=198123

No, I just put the card in and tested with only the current kernels I had.
I can get some older kernel and test with that if that is of any help.

-- 
Meelis Roos <mroos@linux.ee>