Félicien Pillot <felicien@gnu.org> writes:

> Le Sat, 20 Apr 2019 12:39:57 +0200,
> "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> a écrit :
>
>> lspci reports my card as Radeon R7 240/340.  According to Wikipedia
>> this GPU was released in 2013.  Xorg attempted to load the radeon
>> driver and not amdgpu.
>> 
>> Regards,
>> Florian
>
> I also have a Radeon R7 240/340. lspci -k outputs these lines:
>
>> 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Oland PRO [Radeon R7 240/340] (rev 87)
>>         Subsystem: ASUSTeK Computer Inc. Oland PRO [Radeon R7 240/340]
>>         Kernel driver in use: radeon
>>         Kernel modules: radeon, amdgpu
>
> I tried a lot, but couldn't manage to start Xorg with amdgpu. Actually I can't either use linux-libre if I want a good resolution (1920x1080), I have to inject binary firmwares, as explained at https://wiki.gentoo.org/wiki/Amdgpu#Incorporating_firmware

Both Florian and Félicien's reports are to be expected according to
https://en.wikipedia.org/wiki/AMD_Radeon_Rx_300_series#Radeon_Feature_Matrix.

"amdgpu" mostly supports Volcanic Islands and later.
The 240/340 Southern Island / Sea Island, so it can only use radeon if I
understand correctly.

-- 
Pierre Neidhardt
https://ambrevar.xyz/