Radeon "Southern Islands" Support Continues Improving In AMDGPU Driver - GPU Reset

[illwieckz]

The switch to AMDGPU generally means slightly better performance, running on more maintained driver code in general, and perhaps most importantly is that using the AMDGPU kernel driver allows the RADV/AMDVLK Vulkan drivers to function on this hardware.

Michael turning on amdgpu instead of radeonsi also allows to run (Legacy Orca AMDGPU-PRO) OpenCL on GPUs based on GCN1 and GCN2.

While Mesa/LLVM's Clover is enough for things like LuxRender, a more feature-complete OpenCL driver is required by things like DarkTable or Blender.

Turning on amdgpu on all GCN GPUs by default would be really good to see because turning on amdgpu makes available many features, not only for gaming features.

[smitty3268]

You can use Nvidia with Wayland on Gnome and KDE. Nvidia even gave developer to make proper support in KDE for wayland.

You can use Wayland, yes, but you don't get any acceleration in XWayland. For the moment, at least, that's kind of a deal breaker because lots of 3d applications are only built for X.

Excuse me what? AMD doesnt' support their 2013 cards (support ended in 2018) while Nvidia still releases new driver updates (to their 2012 6xx serie cards) to them in 2020. What is more Nvidia cards from 2012 support Vulkan 1.2. Also Nvidia tries hardest to make windows and linux features the same, to a point where Nvidia gave driver with freesync support (on linux) before AMD did. Also Nvidia does give you full day 1 driver support on linux. Also no one ever confirmed a case where Nvidia updated driver screwed performance for old cards.

You can complain about Nvidia stance vs opensource and how they aproach standards. But seriously their drivers are good, and were good for years and they give you official support for years.

True, AMDs Linux support is pretty bad when compared to Intel's and NVIDIAs.

[boxie]

radeon supports even older cards

true - that should have read "drop the GCN cards from the radeon driver"

[leipero]

I have had issues freezing with gnome and poor performance then I remembered that Ubuntu 20 does not default to wayland. No lock ups with wayland and performance is good.

I had completely different experience, wayland was a no go to me (mouse lag etc.), but to be fair, I still prefer X11 .

[leipero]

No, the main reason why this has been requested is for pci-passthrough in virtualization.

Many of their cards need to be reset after a virtual machine is shut down, or it is not usable again until you reboot the host.

I'm not sure that's actually true, even tho. it logically makes sense (what you are saying), here is the thing:
I've used r7 250 (GCN 1.0) card with AMDGPU driver and radeon blacklisted, did passthrough it to the QEMU/KVM Windows 10 VM (using both OVMF and Seabios), long story short, in those conditions, GPU would restart VM without any issues every single time, when VM is down, script would re-bind it without any issues, every single time.

The only issue I had on that particular machine is that by using virsh method for binding/unbinding (or any other method to be honest), in Single GPU scenario, it wouldn't always work, it would work 90+% of the time, but in some cases it wouldn't, and I had to force-restart PC to try it again, and usually it would work. But i think that issue was related to something other than kernel driver, never really figured it out TBH, my suspicion was either something hardware related (on the motherboard) or, well, I don't know what else could be, since I've eliminated most of the suspicions I had.

[piotrj3]

how many wayland compositors left to complete novideo wayland support?
for nvidiots
wayland doesn't know anything about novideo eglstreams

1st. Wayland as wayland is supported for long time.

2nd Compositor is builded on top of wayland. Not other way around.

3rd. Neither Wayland does know anything about GBM that is competing standard.

4th. OpenCl 2.0 is as stupid for AMDidiots as for Nvidia. A lot of things there make only sense for GPUs that share system memory with GPU memory, and this is why Nvidia and AMD normal cards have such big issue (and has a lot of issues even in 2020). Nvidia added "evaluation" like support to OpenCl2.0 but certain things like SVM are 64 bit only. Imagine Nvidia would make RTX not optional extension of Vulkan but mandatory. That is what OpenCl2.0 is.

[pal666]

Nvidia even gave developer to make proper support in KDE for wayland.

how many wayland compositors left to complete novideo wayland support?

OpenCL2.0 is stupid

for nvidiots

Wayland is supported for long time just via their EGLstreams.

wayland doesn't know anything about novideo eglstreams

[pal666]

Excuse me what? AMD doesnt' support their 2013 cards (support ended in 2018)

moron, subj is 2012. and it supports vulkan

You can complain about Nvidia stance vs opensource and how they aproach standards. But seriously their drivers are

number one source of bsods

[pal666]

But if they don't make use of that chance, we all may end with <not_to_be_named_worst_company_to_be_dealt_with> cards - who would want that???

surely that company doesn't support mesa or rocm, so your reasoning is unclear