[Librem 5] Vivante GC7000 Not showing usage

[CaptainMorgan12]

Is there an existing issue for this?

• [X] I searched the existing issues and did not find anything similar.

Current Behavior

GPU usage, memory etc shows only 0 and does not update in Process.

Expected Behavior

I would expect at least some GPU usage to be shown.

Steps To Reproduce

1. use ui, play videos in browser, freetube

Environment

postmarket os edge, wayland, resources 1.5.1, kernel 6.6.32-librem5.2, mesa 24.1.2-r1

Anything else?

No response

[nokyan]

Hi, can you please run flatpak run net.nokyan.Resources in a terminal and copy+paste the output here?

[CaptainMorgan12]

There is no specific warning that GPU wasnt detected. No debug on resources::utils::gpu . Some items of interest below.

DEBUG resources::utils::pci > Successfully parsed pci.ids Gsk-Message: 09:47:17.411: Failed to realize renderer of type 'GskNglRenderer' for surface 'GdkWaylandToplevel': OpenGL ES 3.0 is not supported by this WARN resources::utils::cpu > No sensor for CPU temperature found!

CPU and memory updates correctly.

[nokyan]

Do the Processes and Apps pages work correctly? As in are there processes being listed or do you only see "System Processes" in Apps and nothing in Processes?

[CaptainMorgan12]

System and App processes show correctly with Memory, and Processor %, but no GPU % value.

[nokyan]

Could you send me the output of tree /sys/class/drm/card?/device as well as cat /sys/class/drm/card?/device/uevent?

[CaptainMorgan12]

devices.txt

drm.txt

[nokyan]

It looks like the driver for your GPU does not provide usage statistics unfortunately. Not much I can do about it. :/ Do you know about GPU monitoring tools that work for your GPU?

[CaptainMorgan12]

According to guido.gunther GC7000 and GC7000Lite are using the etnaviv mesa driver and Gallium HUD should provide the performance bits. However as you can see below the GPU-load does not appear. There is also glmark2 which provides performance metrics of the graphics using glmark2-es2-wayland --fullscreen, but metrics are only in FPS, and FrameTime ms, no GPU load.

[nokyan]

Hm, okay. You could also try the CLI utility nvtop.

[CaptainMorgan12]

It reports No GPU to monitor, the tool I think is only for NVIDIA GPUs. Thanks for the suggestion. The tools above seems to be the only ones I have come up with that work somewhat.

[nokyan]

It reports No GPU to monitor, the tool I think is only for NVIDIA GPUs. Thanks for the suggestion. The tools above seems to be the only ones I have come up with that work somewhat.

Despite its name, nvtop also supports non-NVIDIA GPUs. :)

I'll continue to look around but I think the etnaviv driver just doesn't expose that information unfortunately. :/

[CaptainMorgan12]

Ok I might have found the only tool called Vivante Analyzer (windows tool). This puts out a .vpd file that has GPU cycles.

Vivante GPU Profiler iMX6. There is nothing on their website about iMX8 as far as I can tell, but maybe it works with iMX8.

Vivante.Tool.Kit.User.Guide-v1.2.pdf

It looks like it requires the kernel to be re-compiled to enable profiler settings.