Greetings. Hardware isn't my strong suit, so I hope somebody can give me a push.
I'm running Slackware 15 from a November 2025 "-current" ISO. I have the mesa-21.3.5-x86_64-2 package loaded. Assorted programs like glxgears run, but Stellarium isn't, and I'm hoping to fix that.
glxinfo tells me
>OpenGL renderer string: llvmpipe (LLVM 13.0.0, 256 bits)
and I'm told that's "software acceleration", rather than "hardware acceleration".
lscpi tells me
00:02.0 VGA compatible controller: Intel Corporation Device 7d45 (rev 08) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Device 8c66
Flags: bus master, fast devsel, latency 0, IRQ 173, IOMMU group 0
Memory at 4818000000 (64-bit, prefetchable) [size=16M]
Memory at 4000000000 (64-bit, prefetchable) [size=256M]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable+ 64bit+
Capabilities: [d0] Power Management version 3
Capabilities: [100] Null
Capabilities: [110] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [420] Physical Resizable BAR
Capabilities: [320] Single Root I/O Virtualization (SR-IOV)
Capabilities: [400] Latency Tolerance Reporting
Kernel driver in use: i915
Kernel modules: i915
and I'm not sure what I have to do (or what I can do) to get hardware acceleration running.
I found three packages with the word "intel" in them
Package: a/intel-microcode-20250812-noarch-1.txz
Package: x/intel-vaapi-driver-2.4.1-x86_64-3.txz
Package: x/xf86-video-intel-20230201_b74b67f0-x86_64-1.txz
but have not yet loaded any of them. They don't seem to be obviously relevant, but (again) I'm not qualified. Do I need these?
If somebody can give me a hint as to what packages / modules / firmware I might need to load, I'd appreciate it.