Comment 12 for bug 1966108

I've attached a strace dump from Zyga. Looking at the dump there's a bunch of loads of nvidia related files, all of which are successful:

[pid 3977] openat(AT_FDCWD, "/var/lib/snapd/lib/gl/libnvidia-glsi.so.510.60.02", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid 3977] <... openat resumed>) = 20

[pid 3977] openat(AT_FDCWD, "/var/lib/snapd/lib/gl/libnvidia-tls.so.510.60.02", O_RDONLY|O_CLOEXEC) = 20

[pid 3977] openat(AT_FDCWD, "/var/lib/snapd/lib/gl/libnvidia-glcore.so.510.60.02", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid 3977] <... openat resumed>) = 20

[pid 3977] openat(AT_FDCWD, "/var/lib/snapd/hostfs/usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.510.60.02", O_RDONLY) = 20
[pid 3977] openat(AT_FDCWD, "/var/lib/snapd/hostfs/usr/lib/x86_64-linux-gnu/libnvidia-glsi.so.510.60.02", O_RDONLY) = 20
[pid 3977] openat(AT_FDCWD, "/var/lib/snapd/hostfs/usr/lib/x86_64-linux-gnu/libnvidia-tls.so.510.60.02", O_RDONLY) = 20
[pid 3977] openat(AT_FDCWD, "/var/lib/snapd/hostfs/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.510.60.02", O_RDONLY) = 20

[pid 3977] openat(AT_FDCWD, "/proc/driver/nvidia/params", O_RDONLY) = 21
[pid 3977] openat(AT_FDCWD, "/dev/nvidia0", O_RDWR|O_CLOEXEC) = 21

[pid 3977] openat(AT_FDCWD, "/dev/nvidiactl", O_RDWR <unfinished ...>
[pid 3977] <... openat resumed>) = 25

[pid 3977] openat(AT_FDCWD, "/dev/nvidia-modeset", O_RDWR|O_CLOEXEC) = 26

But lastly, there's this odd piece, where it clearly tries to load Mesa's driver for nvidia and obviously fails (strace seems to be confused about what happens here):

[pid 3977] openat(AT_FDCWD, "/snap/chromium/1961/gnome-platform/usr/lib/x86_64-linux-gnu/dri/tls/nvidia-drm_dri.so", O_RDONLY|O_CLOEXEC) = 257
[pid 3977] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_SECCOMP, si_errno=ENOENT, si_call_addr=0x7fa3f1042f58, si_syscall=__NR_openat, si_arch=AUDIT_ARCH_X86_64} ---
[pid 3890] openat(AT_FDCWD, "/snap/chromium/1961/gnome-platform/usr/share/icons/hicolor/symbolic/apps", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 44
[pid 3977] openat(AT_FDCWD, "/snap/chromium/1961/gnome-platform/usr/lib/x86_64-linux-gnu/dri/nvidia-drm_dri.so", O_RDONLY|O_CLOEXEC) = 257
[pid 3977] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_SECCOMP, si_errno=ENOENT, si_call_addr=0x7fa3f1042f58, si_syscall=__NR_openat, si_arch=AUDIT_ARCH_X86_64} ---
MESA-LOADER: failed to open nvidia-drm: /snap/chromium/1961/gnome-platform/usr/lib/x86_64-linux-gnu/dri/nvidia-drm_dri.so: cannot open shared object file: Permission denied (search paths /snap/chromium/1961/gnome-platform/usr/lib/x86_64-linux-gnu/dri)
[pid 3890] openat(AT_FDCWD, "/snap/chromium/1961/data-dir/icons/hicolor/icon-theme.cache", O_RDONLYfailed to load driver: nvidia-drm
) = -1 ENOENT (Nie ma takiego pliku ani katalogu)

So the questions are:
1. why nvidia doesn't work despite all libs being loaded, /dev/nvidia0 and /dev/nvidiactl being opened
2. why it even tries to load mesa drivers