failed to start gnome/gdm3 wayland session after apply NPU patches

[Zhang Ning]

On Tue, Jan 03, 2023 at 03:46:00PM +0100, Tomeu Vizoso wrote:
> Hi Ning,
> 
> On 12/27/22 05:21, Zhang Ning wrote:
> > Hi, Tomeu
> > 
> > after apply your NPU patches:
> > http://lists.infradead.org/pipermail/linux-amlogic/2022-December/014428.html
> > 
> > VIM3 failed to start gnome/gdm3 wayland session.
> > 
> > before:
> > 
> > VIM3:~$ ls /dev/dri/by-path/ -l
> > total 0
> > lrwxrwxrwx 1 root root  8 Dec 27 04:06 platform-ff900000.vpu-card -> ../card0
> > lrwxrwxrwx 1 root root  8 Dec 27 04:06 platform-ffe40000.gpu-card -> ../card1
> > lrwxrwxrwx 1 root root 13 Dec 27 04:06 platform-ffe40000.gpu-render -> ../renderD128
> > 
> > after:
> > 
> > VIM3:~$ ls /dev/dri/by-path/ -l
> > total 0
> > lrwxrwxrwx 1 root root  8 Dec 27 04:10 platform-etnaviv-card -> ../card0
> > lrwxrwxrwx 1 root root 13 Dec 27 04:10 platform-etnaviv-render -> ../renderD128
> > lrwxrwxrwx 1 root root  8 Dec 27 04:10 platform-ff900000.vpu-card -> ../card1
> > lrwxrwxrwx 1 root root  8 Dec 27 04:10 platform-ffe40000.gpu-card -> ../card2
> > lrwxrwxrwx 1 root root 13 Dec 27 04:10 platform-ffe40000.gpu-render -> ../renderD129
> > 
> > the fail log:
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: g_hash_table_destroy: assertion 'hash_table != NULL' failed
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: Failed to open gpu '/dev/dri/card0': No suitable mode setting backend found
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: Added device '/dev/dri/card1' (meson) using atomic mode setting.
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: g_hash_table_destroy: assertion 'hash_table != NULL' failed
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: Failed to open gpu '/dev/dri/card2': No suitable mode setting backend found
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: Failed to initialize accelerated iGPU/dGPU framebuffer sharing: No matching EGL configs
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: Created gbm renderer for '/dev/dri/card1'
> > Dec 27 04:10:42 VIM3 gnome-shell[673]: Integrated GPU /dev/dri/card1 selected as primary
> > 
> > how to configure system to boot to gui with npu enabled?
> 
> Maybe you can do that by setting the "mutter-device-preferred-primary" 
> udev tag for card2?
> 
> https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1562

Hi, Tomeu

I have tried this method.
cat /usr/lib/udev/rules.d/61-mutter-primary-gpu.rules
ENV{DEVNAME}=="/dev/dri/card0", TAG+="mutter-device-ignore"
ENV{DEVNAME}=="/dev/dri/renderD128", TAG+="mutter-device-ignore"

and it does ignore card0
Jan 08 02:19:06 VIM3 gnome-shell[681]: Ignoring DRM device '/dev/dri/card0'

but the screen still show nothing.
and when I move mouse,

ning at VIM3:~$ cat /proc/interrupts |grep -e npu -e panfrost
 16:       1088          0          0          0          0          0     GICv2 179 Level     ff100000.npu
 39:         24          0          0          0          0          0     GICv2 192 Level     panfrost-gpu
 40:          0          0          0          0          0          0     GICv2 193 Level     panfrost-mmu
 41:          0          0          0          0          0          0     GICv2 194 Level     panfrost-job
ning at VIM3:~$ cat /proc/interrupts |grep -e npu -e panfrost
 16:       1100          0          0          0          0          0     GICv2 179 Level     ff100000.npu
 39:         24          0          0          0          0          0     GICv2 192 Level     panfrost-gpu
 40:          0          0          0          0          0          0     GICv2 193 Level     panfrost-mmu
 41:          0          0          0          0          0          0     GICv2 194 Level     panfrost-job


it looks like gnome-shell still using npu as render.

mutter-device-preferred-primary has same result.

BR.
Ning.

> 
> Regards,
> 
> Tomeu