`radeonsi_dri.so` driver missing on riscv64

[Michał Sawicz]

The package is missing the `radeonsi` driver, with the reasoning that LLVM is not implemented on the architecture:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=995618

That said, it works just fine on focal, where it is still enabled. Without this driver there's no way to use AMD graphics cards on RISC-V.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: libgl1-mesa-dri 22.0.1-1ubuntu2
ProcVersionSignature: User Name 5.15.0-1007.7-generic 5.15.30
Uname: Linux 5.15.0-1007-generic riscv64
ApportVersion: 2.20.11-0ubuntu82
Architecture: riscv64
CasperMD5CheckResult: unknown
Date: Thu Jun 30 15:48:11 2022
ProcCpuinfoMinimal:
 processor : 3
 hart : 4
 isa : rv64imafdc
 mmu : sv39
 uarch : sifive,u74-mc
ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: mesa
UpgradeStatus: No upgrade log present (probably fresh install)

[Heinrich Schuchardt (xypron)]

libgl1-mesa-dri_22.0.5-0ubuntu0.1_ppc64el.deb is available in Jammy.
libgl1-mesa-dri_22.1.3-1ubuntu1_riscv64.deb us available in Kinetic.

Therefore marking as fix released.

[Michał Sawicz (saviq)]

@xypron the packages you mentioned still don't include the `radeon` or `radeonsi` driver:

https://launchpad.net/ubuntu/jammy/riscv64/libgl1-mesa-dri/22.0.5-0ubuntu0.1
https://launchpad.net/ubuntu/kinetic/riscv64/libgl1-mesa-dri/22.1.3-1ubuntu1

Compared to:

https://launchpad.net/~ubuntu-security-proposed/+archive/ubuntu/ppa/+build/23235579

[Timo Aaltonen (tjaalton)]

not going to get fixed before llvm supports JIT on riscv64

[Michał Sawicz (saviq)]

@tjaalton, but it works just fine on focal in our tests… can we not enable radeon/-si without enabling gallium at the same time? Maybe I'm simplifying things, but we're running Mir GL tests on focal with riscv64/AMD GPU just fine.

[Timo Aaltonen (tjaalton)]

Which version of mesa on focal is that? The current backport version is from jammy and doesn't enable gallium for riscv64.

Radeonsi requires llvm.

[Michał Sawicz (saviq)]

@tjaalton it's 21.2.6-0ubuntu0.1~20.04.2 in focal:

https://launchpad.net/~ubuntu-security-proposed/+archive/ubuntu/ppa/+build/23235579
https://launchpad.net/ubuntu/+source/mesa

[Timo Aaltonen (tjaalton)]

oh right, 22.0.5 hasn't been backported yet

anyway, if llvm is enabled, it'll essentially break swrast for riscv64.. if that's a tradeoff you can live with, then okay

[Michał Sawicz (saviq)]

I suppose we may need to work with a PPA then.

@xypron what do you think?

[Timo Aaltonen (tjaalton)]

llvm-toolchain-15 has JIT

[Timo Aaltonen (tjaalton)]

not so fast, llvm-15 will get backported to jammy for mesa hwe backport ;)

[Launchpad Janitor (janitor)]

This bug was fixed in the package mesa - 22.2.1-1ubuntu1

---------------
mesa (22.2.1-1ubuntu1) kinetic; urgency=medium

  * Merge from Debian. (LP: #1992656)

 -- Timo Aaltonen <email address hidden> Wed, 12 Oct 2022 17:10:22 +0300

[Michał Sawicz (saviq)]

Can confirm this works fine on kinetic:

> <information> GLRenderer: GL vendor: AMD
> <information> GLRenderer: GL renderer: AMD Radeon RX 480 Graphics (polaris10, LLVM 15.0.2, DRM 3.47, 5.19.0-1002-generic)
> <information> GLRenderer: GL version: OpenGL ES 3.2 Mesa 22.2.1
> <information> GLRenderer: GLSL version: OpenGL ES GLSL ES 3.20

Vs. jammy:

> MESA-LOADER: failed to open radeonsi: /usr/lib/dri/radeonsi_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/riscv64-linux-gnu/dri:\$${ORIGIN}/dri:/usr/lib/dri, suffix _dri)
> failed to load driver: radeonsi
> <information> GLRenderer: GL vendor: Mesa/X.org
> <information> GLRenderer: GL renderer: softpipe
> <information> GLRenderer: GL version: OpenGL ES 3.1 Mesa 22.0.5
> <information> GLRenderer: GLSL version: OpenGL ES GLSL ES 3.10

[Launchpad Janitor (janitor)]

This bug was fixed in the package mesa - 22.2.5-0ubuntu0.1~22.04.1

---------------
mesa (22.2.5-0ubuntu0.1~22.04.1) jammy; urgency=medium

  * Backport to jammy. (LP: #1991761)

 -- Timo Aaltonen <email address hidden> Thu, 15 Dec 2022 16:35:13 +0200

[Michał Sawicz (saviq)]

And can confirm this works on jammy now, too \o/.