Control: tag -1 upstream wontfix
On 11/02/2023 12.23, jim_p wrote:
Some manjaro user from github found a solution for kodi v20. Launching it like
so makes it work, so this probably means that kodi v20, unlike v19, does not
detect the library properly.
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/nvidia/libGL.so.1 kodi
That workaround is very helpful for understanding the problem.
Thanks for digging it out.
The 340 legacy driver predates libglvnd and ships a monolithic
libGL.so.1. With libglvnd libGL.so.1 has been split into libOpenGL.so.0
and libGLX.so.0, all three are being just dispatch libraries (instead of
actual implementations) that forward the OpenGL etc. calls to the
corresponding vendor implementations.
While it worked in the past to replace the system libGL.so.1 (from
libglvnd) with the nvidia provided one, new application versions may
have moved on to expect a libglvnd based environment ...
Just checked ... kodi 20 is linked against libGLX.so.0 and libGL.so.1,
while kodi 19 was only linked against libGL.so.1
Starting kodi 20 with the nvidia legacy 340xx driver installed gets you
two halves of two different OpenGL implementations: libGLX.so.0
(libglvnd) which uses the MESA implementation and libGL.so.1 from nvidia
- of course that mixture does not work. As libGLX.so.0 is a subset of
libGL.so.1 preloading the nvidia libGL.so.1 gets you lucky here because
it overrides the symbols from libGLX.so.0 and you are afterwards running
with only one consistent implementation.
For other applications this does not seem to work since not all
entrypoints can be redirected to the nvidia libGL.so.1 - perhaps because
there are some symbols being used that didn't even exist in the old
days. Could it be that Qt5 now makes use of Wayland, and that does not
work at all with a legacy libGL.so.1 ?
That seems to be another indicator that the breakage is unrelated to the
kernel module but that the OpenGL world has moved on, assuming a
libglvnd based setup.
In bookworm:
# apt-cache rdepends libopengl0 | wc -l
68
# apt-cache rdepends libglx0 | wc -l
43
# apt-cache rdepends libgl1 | wc -l
509
# apt-cache rdepends libwayland-server0 | wc -l
50
# apt-cache rdepends libwayland-client0 | wc -l
153
Btw, kitty uses wayland (but already in bullseye).
And libqt6opengl6 depends on libopengl0 ...
In bullseye:
# apt-cache rdepends libopengl0 | wc -l
39
# apt-cache rdepends libglx0 | wc -l
31
# apt-cache rdepends libgl1 | wc -l
540
# apt-cache rdepends libwayland-server0 | wc -l
39
# apt-cache rdepends libwayland-client0 | wc -l
91
Andreas
