En parcourant le wiki sur les pilotes graphiques, j’ai lu qu’il fallait installer firmware-amd-graphics (j’ai aussi installé firmware-intel-sound car je n’avais pas de son).
Sur un autre forum, on m’a conseillé de faire un glxinfo -B et voici le retour :
glxinfo -B
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
Vendor: AMD (0x1002)
Device: AMD Radeon 610M (radeonsi, raphael_mendocino, LLVM 19.1.7, DRM 3.61, 6.12.96+deb13-amd64) (0x1506)
Version: 25.0.7
Accelerated: yes
Video memory: 512MB
Unified memory: no
Preferred profile: core (0x1)
Max core profile version: 4.6
Max compat profile version: 4.6
Max GLES1 profile version: 1.1
Max GLES[23] profile version: 3.2
Memory info (GL_ATI_meminfo):
VBO free memory - total: 203 MB, largest block: 203 MB
VBO free aux. memory - total: 3538 MB, largest block: 3538 MB
Texture free memory - total: 203 MB, largest block: 203 MB
Texture free aux. memory - total: 3538 MB, largest block: 3538 MB
Renderbuffer free memory - total: 203 MB, largest block: 203 MB
Renderbuffer free aux. memory - total: 3538 MB, largest block: 3538 MB
Memory info (GL_NVX_gpu_memory_info):
Dedicated video memory: 512 MB
Total available memory: 4099 MB
Currently available dedicated video memory: 203 MB
OpenGL vendor string: AMD
OpenGL renderer string: AMD Radeon 610M (radeonsi, raphael_mendocino, LLVM 19.1.7, DRM 3.61, 6.12.96+deb13-amd64)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 25.0.7-2+deb13u1
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL version string: 4.6 (Compatibility Profile) Mesa 25.0.7-2+deb13u1
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 25.0.7-2+deb13u1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
Apparemment, tout serait bon du côté de la carte mais le souci persiste (sous Debian, pas sous Windows).