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justsquid

Member

Registered: 2022-07-07

Posts: 12

When attempting to set up PRIME, X spits out BadValue

This is a continuation of this thread where I had issues using both gpus, however the root problem of that issue was indeed solved. The issue I have now is setting up PRIME, as that seems more appealing to my use case. While I was following PRIME_GPU_offloading, I used the example

xrandr --setprovideroffloadsink 1 0

. When I did so, I got this:

X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  34 (RRSetProviderOffloadSink)
  Value in failed request:  0x62
  Serial number of failed request:  16
  Current serial number in output stream:  17

How can I get PRIME offloading working?

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,808

Re: When attempting to set up PRIME, X spits out BadValue

From your other thread you're using a static server config that selects only one of the devices?

xrandr --listproviders

and also post your xorg log.

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justsquid

Member

Registered: 2022-07-07

Posts: 12

Re: When attempting to set up PRIME, X spits out BadValue

Providers: number : 2
Provider 0: id: 0x62 cap: 0x7, Source Output, Sink Output, Source Offload crtcs: 2 outputs: 2 associated providers: 1 name:nouveau
Provider 1: id: 0x9c cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 5 outputs: 4 associated providers: 1 name:AMD Radeon RX 6600 XT @ pci:0000:0b:00.0

http://ix.io/41XN Xorg.0.log

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,808

Re: When attempting to set up PRIME, X spits out BadValue

You're running on the nvidia chip. If you want access to the outputs on the AMD chip, try

xrandr --setprovideroutputsource 0x9c 0x62

The other way round (using prime to run on the amd chip and posting that to the outputs on the nvidia chip) should™ already be established by default.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

justsquid

Member

Registered: 2022-07-07

Posts: 12

Re: When attempting to set up PRIME, X spits out BadValue

You're running on the nvidia chip...
The other way round (using prime to run on the amd chip and posting that to the outputs on the nvidia chip) should™ already be established by default.

Wait, so I should™ be getting AMD rendering posted to Nvidia outputs already? Then why is OpenGL rendering saying

 OpenGL renderer string: NV138 

when I use glxinfo | grep "OpenGL renderer"?

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,808

Re: When attempting to set up PRIME, X spits out BadValue

Because you're running on the nvidia chip.
Try

DRI_PRIME=1 glxinfo | grep "OpenGL renderer"

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc