radeon radeonsi vs amdgpu radeonsi for HD 7950

[alogim]

I am about to install the graphics driver for my Sapphire HD 7950 Dual-X with Boost.

It seems it is part of the Southern Islands series, so it both supports radeon radeonsi and amdgpu radeonsi. As explained here, the latter is «experimental, optional support added since kernel 4.9-rc1».

Is it safe to proceed with amdgpu radeonsi?
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[Ant P.]

For now it's probably a better idea to use radeon; amdgpu still has problems with things like tearing.

[McLink]

Depends what you mean by "safe". I have a 7790 and run AMDGPU, along with the 9999-versions of basically the entire graphics stack, and problems are relatively rare. The worst that has happened to me is that my display sometimes fails to wake up after the monitor has been turned off by XScreensaver, but this is very rare, and seems to mostly occur when I've rebuilt the graphics stack without restarting X. In general, AMDGPU won't eat your children or set your GPU on fire (probably). Of course, that doesn't mean it's necessarily as stable or glitch-free as radeon (e.g. the tearing problem mentioned by Ant P. -- though I haven't had this problem myself), but it should work, and may occasionally even offer a slight performance benefit.

You can also install both, if you want, and blacklist the module you don't use. Just set VIDEO_CARDS="amdgpu radeonsi radeon".
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