The merge commit for PR #79 (e7cc22e42) did not auto-fire the
Gitea Actions workflow despite touching paths matched by the
build.yml filter (arch/** + .gitea/workflows/**). No run row
exists between #160 (PR #78 merge) and now. This README touch
is a no-op content change to force a fresh workflow_dispatch
through the standard push trigger.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
panvk-bifrost-video campaign close. Phase 4 byte-exact validated
2026-05-21 on RK3566/PineTab2 (Mali-G52 r1 MC1 + hantro VPU): 48/48
unique BBB display frames decoded by this driver are byte-identical
to ffmpeg+libva-v4l2-request-fourier on the same hantro hardware
(frame 42 Y md5 = 54b9b396e6cd377256eb4bce0efc0bed both ways).
Phase 5 second-model review passed; load-bearing findings applied.
Co-installs at /usr/lib/panvk-bifrost-video/ parallel to the r4
sibling at /usr/lib/panvk-bifrost/; opt-in via VK_ICD_FILENAMES.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
First cycle of the libavcodec.so substitution arc (reauktion/daedalus-v4l2#11
step 2). H264DSPContext.idct_add — called per 4×4 block from the
intra-4×4 decode path in libavcodec/h264_mb.c — now dispatches through
daedalus_recipe_dispatch_h264_idct4 instead of ff_h264_idct_add_neon.
## What
- Add 0003-h264-idct4-daedalus-fourier.patch (in both arch/ and
debian/ ffmpeg-v4l2-request-fourier/). Creates
libavcodec/aarch64/h264_idct_daedalus.c (ff_h264_idct_add_daedalus
shim + lazy pthread_once context init via
daedalus_ctx_create_no_qpu), patches
libavcodec/aarch64/h264dsp_init_aarch64.c to wire c->idct_add to
the shim, adds the new .o to libavcodec/aarch64/Makefile.
- arch/PKGBUILD + debian/build-deb.sh: fetch + build
daedalus-fourier (pinned at d87239d — lockstep with the
daedalus-v4l2 daemon's inline build) with
-DCMAKE_POSITION_INDEPENDENT_CODE=ON into a per-build temp prefix,
then pass --extra-cflags=-I.../include --extra-ldflags=-L.../lib
--extra-libs="-ldaedalus_core -lvulkan -lpthread" to FFmpeg
configure. daedalus_core.a is static-linked into libavcodec.so.62.
- debian/control Depends gains libvulkan1 (daedalus_core PUBLIC-links
Vulkan::Vulkan for the queryable QPU substrate; the no-QPU
constructor still works at runtime but the loader needs
libvulkan.so.1 present to dlopen libavcodec.so.62).
- arch/PKGBUILD depends gains vulkan-icd-loader, makedepends gains
cmake / ninja / vulkan-headers.
## Why
The recipe layer picks the substrate; for cycle 6 (H.264 IDCT 4×4)
the recipe is CPU NEON, so this is effectively a NEON-to-NEON
substitution with one extra dispatch call and recipe-table lookup.
The point of this first cycle isn't perf wins — it's plumbing. Once
the path is wired and stable, follow-up patches batch through the
bulk paths (idct_add16 / idct_add16intra / idct_add8) and stack
cycles 7/8/9 (IDCT 8×8, luma-v deblock, qpel mc20).
Bit-exact against ff_h264_idct_add_neon (daedalus-fourier cycle 6
green; FFmpeg's 4×4 block storage matches daedalus's column-major
convention).
## Scope NOT covered
- Bulk paths (idct_add16 / idct_add16intra / idct_add8) — most IDCT
4×4 calls in real H.264 streams go through these, not the per-
block c->idct_add path; intra-4×4-only macroblocks are a minority.
Batched substitution lands in a follow-up.
- High-bit-depth (10-bit) path — not touched; 8-bit only.
- Cycles 7/8/9 — separate PRs.
## SONAME
Unchanged. libavcodec.so.62 / libavformat.so.62 / libavutil.so.60.
No daedalus-v4l2-dkms or daedalus-v4l2 bump required.
## Refs
- reauktion/daedalus-v4l2 issue #11 (substitution arc): reauktion/daedalus-v4l2#11
- marfrit/daedalus-fourier cycle 6 close (H.264 IDCT 4×4 NEON green)
Daemon-only bump (no daedalus-v4l2-dkms change needed; PROTO_VERSION
stays at 0).
#12 (LOW_DELAY half-measure): daemon sets AV_CODEC_FLAG_LOW_DELAY on
the H.264 AVCodecContext so libavcodec emits frames in decode order
~99% of the time (a few stragglers at GOP boundaries when the
stream's SPS num_reorder_frames overrides the flag). Visible
improvement vs the 2-1-4-3 pair-swap on Firefox + mpv playback;
not the permanent fix — see daedalus-v4l2#11 for the architectural
plan to substitute daedalus-fourier kernels for libavcodec's
pixel math one cycle at a time.
#13 (daedalus-fourier linkage): daemon now pkg-config-links against
the daedalus-fourier kernel library (marfrit/daedalus-fourier) and
logs substrate availability at startup. No kernels dispatched yet
— this is the build-time foundation for the substitution work.
build-deb.sh updated to fetch + build + install daedalus-fourier
(pinned at d87239d, marfrit/daedalus-fourier PR #1) into a per-
build temp prefix before invoking the daemon's cmake, exposing it
via PKG_CONFIG_PATH. Static-linked, so the resulting .deb has no
new runtime deps. Requires libvulkan-dev + glslang-tools on the
CI runner.
Arch PKGBUILD bumped to the same upstream commit but Arch packaging
for daedalus-fourier itself is a follow-up; until that lands the
Arch build expects daedalus-fourier installed by the user (AUR-style).
Debian-side is end-to-end self-contained via build-deb.sh.
Refs:
* reauktion/daedalus-v4l2#12
* reauktion/daedalus-v4l2#13
* reauktion/daedalus-v4l2#11
* marfrit/daedalus-fourier#1
Lock-step downgrade of both packages to the revert tip of
daedalus-v4l2 (PR #10 closed PRs #7 + #8). After
0.1.0+r28+g79256dc-1 / 0.1.0+r30+g6ffe92b-1 landed in production,
mpv (--hwdec=vaapi-copy) failed pre-playing with "Unable to dequeue
buffer: Resource temporarily unavailable" because the daemon
parked CAPTURE buffers waiting for libavcodec's display-order
reorder, violating libva's V4L2 stateless 1:1 contract. See
daedalus-v4l2#9 for the diagnostic, #10 for the revert PR.
DAEDALUS_PROTO_VERSION drops 1 → 0; install both .debs in the same
apt transaction. Userspace ABI returns to the f0d4186-equivalent
behaviour, plus PR #4 (cosmetic H.264 menu controls). The
daedalus-v4l2-dkms #64 multi-kernel postinst behaviour stays in
build-deb.sh.
Visible regression: H.264 B-frame streams in Firefox return to the
"2 1 4 3 6 5" pair-swap visual. Proper fix (concurrent in-flight
requests in daemon + display-order reorder moved into libva-v4l2-
request-fourier) tracked at daedalus-v4l2#11.
Refs:
* reauktion/daedalus-v4l2#9
* reauktion/daedalus-v4l2#10 (merged)
* reauktion/daedalus-v4l2#11
iter17 closes the 162 winding_* CTS failures from iter15's baseline by
replacing the upstream pan_nir_lower_xfb call with a panvk-specific NIR
pass (panvk_per_arch(nir_lower_xfb)) that handles per-primitive
decomposition for non-LIST topologies (LINE_STRIP, TRIANGLE_STRIP,
TRIANGLE_FAN, and the four _WITH_ADJACENCY variants).
Topology + per-instance output vertex count are threaded as new sysvals
(vs.xfb_topology + vs.xfb_output_count) so the NIR pass can dispatch
per-topology at runtime without compiling 7+ shader variants.
dEQP-VK.transform_feedback.simple.* result (133596 cases total):
iter15 baseline -> iter17
Pass: 796 958 (+162)
Fail: 243 81 (-162; resume_* by-design only)
NotSupported: 132551 132551
Fatal-skip: 6 6
Pass rate of runnable: 76.2% -> 91.7% (+15.5pp)
100% of the iter15 winding-fail cluster closed. The remaining 81 fails
are all resume_* (pause/resume XFB, by design — we advertise
transformFeedbackDraw=false).
Second-model review (janet) produced 3 findings; Findings 1+2 were
already fixed in the in-tree applied state (stale applied_state/ snapshot
read by reviewer), Finding 3 (degenerate N underflow on N<2) addressed
by gating non-LIST emission on `output_count > 0` predicate.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Kernel-only bump. Fixes the hard-reboot regression introduced by
the daedalus-v4l2#7 split-completion design and observed on higgs
(Pi CM5) during the first mpv vaapi-copy playback of 720p H.264:
device_run now removes src + dst from m2m_ctx's rdy_queue at the
moment it picks them up, not at buf_done time. Without this, a
parked dst_buf (waiting for libavcodec's display-order release)
stayed in the rdy_queue and got re-picked by the next device_run
after SRC_CONSUMED's job_finish released the scheduler — two
inflight entries on the same vb2_buffer, later HAS_PIXELS calls
list_del on an already-detached list_head, panic.
DAEDALUS_PROTO_VERSION stays at 1 — daemon (userspace
daedalus-v4l2) need NOT bump in lockstep with this DKMS update.
The existing daedalus-v4l2 0.1.0+r28+g79256dc is wire-compatible
with daedalus-v4l2-dkms 0.1.0+r30+g6ffe92b.
Refs:
* reauktion/daedalus-v4l2#8
Bumps both Arch PKGBUILD and Debian build-deb.sh pins to PR #16 —
codec_store_buffer + request_pool_resize transparent OUTPUT-pool grow
on a mid-session resolution upshift overrun. Picks up the frame-
survival path that supersedes #13's drop-and-recreate fallback.
Dual-pin per feedback_marfrit_packages_dual_pin so both Arch and
Debian repos see check-already-published.sh report a new version.
Lock-step bump of both packages to daedalus-v4l2#7 + #4. PROTO_VERSION
bumps 0 → 1 at the daemon ↔ kernel chardev wire: REQ_DECODE adds
__u64 src_pts (the OUTPUT vb2 timestamp); RESP_FRAME adds __u32 flags
(HAS_PIXELS / SRC_CONSUMED) + __u64 output_src_pts (= frame->pts on
drain). Both .debs must be installed atomically or the chardev
handshake rejects the version mismatch.
* daedalus-v4l2: daemon's send_packet → receive_frame loop now
stamps pkt->pts = req->src_pts and looks up the cookie for each
drained frame via frame->pts. chardev_client emits multiple
RESP_FRAME messages per REQ_DECODE when libavcodec's display-
order DPB releases an earlier frame on receipt of a later
bitstream — fixes the "2 1 4 3 6 5" pair-swap on H.264 streams
with B-frames.
* daedalus-v4l2-dkms: kernel device_run mirrors src_buf timestamp
into REQ_DECODE.src_pts. Completion path splits HAS_PIXELS /
SRC_CONSUMED: src is released as soon as send_packet succeeds
(so the m2m scheduler moves on), dst stays parked until the
matching frame is drained later. TIMESTAMP_COPY's auto src→dst
pairing no longer applies once lifecycles decouple — dst is
stamped explicitly from inflight->src_pts at HAS_PIXELS time.
* daedalus-v4l2-dkms also carries forward the -2 multi-kernel
postinst fix (#64) from the prior PKGREL. PKGREL resets to 1 on
the new upstream pin.
The daedalus-v4l2#4 H.264 DECODE_MODE + START_CODE menu controls (a
cosmetic warning fix that PR landed alongside #7) is also subsumed —
"Unable to set control(s) error_idx=2/2" no longer fires.
Refs:
* reauktion/daedalus-v4l2#7
* reauktion/daedalus-v4l2#4
* reauktion/daedalus-v4l2#6
Bumps both the Arch PKGBUILD and the Debian build-deb.sh pins to PR
#14 merge — codec_store_buffer bounds-checks for VASliceDataBufferType.
Picks up the SIGSEGV fix for mpv --hwdec=vaapi-copy on resolution
upshift mid-stream (issue #13).
Dual-pin so check-already-published.sh detects both pool ABIs as
needing a fresh build.
Closes#60.
Resolves the malformed-patch issue from #61 (since reverted in #62)
by regenerating the 0003 patch via actual application against firefox
150.0.3 Pi-OS source.
Functional change vs prior 0003: walking hw_configs accepts
AV_HWDEVICE_TYPE_DRM (legacy) OR integer device_type values 13/14
(AV_HWDEVICE_TYPE_V4L2REQUEST in Kwibos no-AMF / upstream-AMF trees).
CreateV4L2RequestDeviceContext passes integer 13 (Kwibos value) cast
to enum AVHWDeviceType for the av_hwdevice_ctx_create call.
Tested: applied cleanly via patch -p1 against firefox-150.0.3 source
post-Pi-OS-quilt-patches. Test build follow-up in firefox-rpios EC2
script (drops the in-source sed hack from v7-v8).
Closes part of #60 (firefox-side patch update for fourier2 ffmpeg).
Background: libavcodec61-fourier2 (Kwiboo v4l2-request-n7.1.3 backed)
registers its hwaccels with AV_HWDEVICE_TYPE_V4L2REQUEST (the dedicated
enum added in FFmpeg 7.1+), not AV_HWDEVICE_TYPE_DRM as fourier1 did.
The firefox-fourier patch #3 walked hw_configs looking only for DRM
and fell through to software for every codec.
Patch updates:
- CreateV4L2RequestDeviceContext now takes an int aDeviceType (Mozillas
bundled libavutil headers may lack the V4L2REQUEST enumerator), passed
through to av_hwdevice_ctx_create.
- hw_configs walk accepts DRM (legacy) OR V4L2REQUEST integer value
(13 on Kwibooss no-AMF tree, 14 on upstream-AMF tree).
- Renamed mDRMDeviceContext to mV4L2RequestDeviceContext for accuracy.
Build pkgrel will be bumped at debian-package level to +fourier2.
Upstream PR #3 — kernel per-context vb2_queue lock so concurrent
clients of /dev/video0 don't serialise on a device-wide mutex.
Pi 5 Firefox VAAPI playback (RDD + content + GPU processes each
opening the device) now works without S_FMT EBUSY collisions.
Verified on higgs: YouTube playback engages daedalus at sustained
~230 fps decode through the libavcodec dlopen path, ~7× headroom
over the 30fps@1080p Pi 5 Fourier target.
Both packages: pkgver 0.1.0.r24.f0d4186, pkgrel reset to 1.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Bumps both Arch (PKGBUILD) and Debian (build-deb.sh) sides in one commit
this time — following the dual-pin lesson from PR #53.
77f9236 = libva PR #12 merge: src/av1.{c,h} implements av1_set_controls
mapping VAPictureParameterBufferAV1 onto struct v4l2_ctrl_av1_sequence,
queued via S_EXT_CTRLS as V4L2_CID_STATELESS_AV1_SEQUENCE. The
daedalus_v4l2 daemon track will consume the ctrl to synthesise an
OBU_SEQUENCE_HEADER and prepend it to the slice bitstream, so libdav1d
can parse the OUTPUT buffer that ffmpeg-vaapi delivers without the
sequence header.
Until the daemon-side OBU synth lands (issue #11 operator track), the
SEQUENCE ctrl is just sitting in the request unused. Harmless on the
RK3588 vpu981 hardware path (vpu981 parses OBU bytes directly, ignores
the ctrl payload).
pkgver: r382.c1bb444 -> r386.77f9236 (commit count 382 -> 386, two new
upstream commits: 9fa18f2 av1 + 77f9236 merge).
pkgrel: 1 (fresh pkgver, no rebuild-only iteration).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Upstream PR #2 landed the one-line kernel fix that was the missing
half of issue libva-v4l2-request-fourier#8: device_run now calls
v4l2_ctrl_request_setup() before reading ctrl->p_cur, so the
daedalus_h264_meta the daemon receives reflects the in-flight
media_request's bound H.264 stateless control values instead of
stale/default ones.
Pairs with libva-v4l2-request-fourier 1.0.0+r382+gc1bb444 (max_num_
ref_frames fallback + Fix 4 instrumentation that exposed the
control-binding gap in the first place).
Effect on Pi 5 / CM5 hosts (higgs): ffmpeg -hwaccel vaapi against
H.264 sources now produces actual decoded content (per-frame
fnv1a hashes differ, zero MB-decode errors) instead of the
constant 0x6a6a05c5 "best-effort give-up" hash and cascading
decode warnings.
Both packages: pkgver 0.1.0.r22.462aa4b, pkgrel reset to 1.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Bumps the libva backend pin to include marfrit/libva-v4l2-request-fourier
PR #9 — h264_set_controls fix for the bitstream-vs-session value drift
that breaks the daedalus_v4l2 strict-consumer path (issue #8):
* max_num_ref_frames fallback when VAAPI client left it 0 (count
valid DPB entries, then per-profile spec minimum)
* one-line request_log at h264_set_controls entry dumping raw
VAAPI bitfields for disambiguating remaining PPS-flag-zero
portion of #8
The PR explicitly defers the deeper "profile_idc / level_idc from
bitstream" portion of #8 — VAAPI's VAPictureParameterBufferH264 omits
both fields, so a real fix needs SPS-NAL parsing or daedalus
wire-protocol pass-through. Not in this bump.
pkgver: 1.0.0.r380.9898331 -> 1.0.0.r382.c1bb444 (commit count 380->382)
pkgrel: 1 (fresh pkgver, no rebuild-only iteration)
Verified on higgs (Debian 13 trixie, gcc 14.2.0, libva 2.22.0):
clean meson build, vainfo enumerates all 8 codec profiles, multi-device
probe still wires rkvdec / rpi-hevc-dec / daedalus_v4l2.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
iter12 hit a wall: Brave's ANGLE-Vulkan path requires GLES3, which
requires VK_EXT_transform_feedback, which PanVk-Bifrost did not
implement. This iter implements that extension, unlocking the full
ANGLE-Vulkan-on-Bifrost stack.
The implementation follows Panfrost-Gallium's well-validated XFB lowering
(nir_io_add_intrinsic_xfb_info + pan_nir_lower_xfb) wired into the PanVk
shader pipeline after nir_lower_io. Adds 4 XFB buffer address sysvals
plus per-draw num_vertices to the graphics sysval struct. Buffer state
is tracked on the cmd buffer; per-draw sysval upload populates either
the bound buffer's GPU address or PAN_SHADER_OOB_ADDRESS (memory-sink)
so XFB-capable pipelines used outside Begin/End survive without GPU
fault — the Panfrost-Gallium idiom from gallium/drivers/panfrost/
pan_cmdstream.c:1350.
Verified on PineTab2 (Mali-G52 r1 MC1, RK3566):
- /tmp/panvk-iter13/probe_xfb: 3 vertices captured byte-exact
- /tmp/panvk-iter13/probe_xfb_nodraw: XFB pipeline used without Bind/
Begin/End survives — DEVICE_LOST regression closed
- Brave 148 with --use-angle=vulkan: WebGL 2.0 (OpenGL ES 3.0) creates
cleanly, renderer reports
"ANGLE (ARM, Vulkan 1.2.335 (Mali-G52 r1 MC1), panvk)"
- chrome://gpu graphics feature status: Canvas/Compositing/OpenGL/
Rasterization/WebGL/WebGL2/WebGPU/Video Decode all hardware accelerated
Phase docs:
- ~/src/panvk-bifrost/phase4_iter13_close.md (build green)
- ~/src/panvk-bifrost/phase5_iter13_close.md (review fixes applied)
- ~/src/panvk-bifrost/phase6_iter13_close.md (Brave integration green)
pkgver bumped 26.0.6.r2 -> 26.0.6.r3; iter13 patch applied via
unified-diff (the 328-line change scope is past sed-of-individual-
lines territory). Sanity checks in prepare() verify the patch landed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Upstream PR #1 landed daemon-side synthesis of H.264 SPS/PPS NAL
units from the V4L2 stateless control structs. This bumps the
package pin so both the userspace daemon and the kernel module
pick up the change in lockstep (wire protocol grew a new
DAEDALUS_REQ_FLAG_H264_META bit + struct daedalus_h264_meta —
kernel and daemon MUST match).
Effect on Pi 5 / CM5 hosts (higgs): ffmpeg -hwaccel vaapi against
H.264 sources will actually decode through the daedalus daemon
instead of failing with "non-existing PPS 0 referenced".
Both arch + debian packages: pkgver 0.1.0.r20.3dd0eb0 (count from
git rev-list), pkgrel reset to 1 (new upstream pin).
VP9 / AV1 paths unchanged.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Follow-up to libva PR #7 (merged as 9898331). Without that commit,
H.264/VP9/AV1 profiles never got advertised on Pi 5 mixed deploys
(rpi-hevc-dec primary + daedalus_v4l2 alt) because the profile-
enumeration probe in any_fd_supports_output_format only walked
rkvdec / hantro / rpi-hevc-dec / vpu981 fds. ffmpeg vaapi -i
h264_test.mp4 on higgs bailed with "No support for codec h264
profile 578" before the LIBVA-1 per-codec dispatch could even fire.
9898331 extends the fds[] from 5 to 6 with video_fd_daedalus as
the 6th slot (HAVE_DAEDALUS_V4L2-gated, -1 fallback otherwise).
Effect on higgs once this lands: vainfo lists VP9Profile0 +
AV1Profile0 + H264* alongside HEVCMain, and ffmpeg -hwaccel vaapi
-i h264_test.mp4 routes through the daedalus daemon (via 'd' kind
in request_switch_device_for_profile).
Both packages: pkgver 1.0.0.r380.9898331 (count from rev-list),
pkgrel reset to 1 (new upstream pin). Backward-compatible on
RK3399/3588 — the new fd slot is gated by HAVE_DAEDALUS_V4L2 *and*
video_fd_daedalus >= 0, both false in those deployments.
Companion to the prior LIBVA-{1,ABI} bumps that landed in marfrit-
packages PRs #43, #44. Together they close the Pi 5 stack: boot ->
modules-load.d loads daedalus_v4l2 -> daedalus-v4l2.service starts
daemon -> libva opens both decoders -> ffmpeg -hwaccel vaapi
enumerates all codecs from both -> routes per-codec.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Bumps both Arch (PKGBUILD) and Debian (build-deb.sh + changelog)
pins to upstream c332d34 — the merged LIBVA-1 PR.
Effect: Pi 5 / CM5 mixed deployment (higgs) now opens BOTH
rpi-hevc-dec and daedalus_v4l2 from one libva session and routes
per-codec — HEVC to rpi-hevc-dec ('p'), VP9 / AV1 / H.264 to the
daedalus daemon (new 'd' kind). Before c332d34, find_codec_device
picked rpi-hevc-dec by known_decoder_drivers[] order and the
daedalus slot stayed -1, so VP9/AV1/H.264 frames failed S_FMT.
Also closes a small fd leak in RequestTerminate (daedalus pair —
caught while reviewing the alt-driver expansion).
Both packages: pkgver bumped 1.0.0.r378.c332d34, pkgrel reset to 1
(new upstream pin). Backward-compatible on RK3399/3588 — new
branches gated by HAVE_DAEDALUS_V4L2 *and* video_fd_daedalus >= 0,
both false in those deployments.
Companion: daedalus-v4l2{,-dkms} bump 481279c landed in PR #39
(systemd unit + auto-enable). Together they close the Pi 5 stack:
boot → modules-load.d loads daedalus_v4l2 → daedalus-v4l2.service
starts daemon → libva opens both decoders → ffmpeg -hwaccel vaapi
routes by codec.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Installed systems carry 1:1.0.0.r361.cf8cd9d-1 from an earlier build
that had epoch=1. Current PKGBUILD ships 1.0.0.r376.de27e95-1 without
epoch, which pacman vercmp ranks BELOW the installed version, so
ohm refuses to upgrade with:
warning: libva-v4l2-request-fourier: local (1:1.0.0.r361.cf8cd9d-1) is
newer than marfrit (1.0.0.r376.de27e95-1)
Restoring epoch=1 fixes the monotonic version chain.
iter9 of the panvk-bifrost campaign — operator-confirmed Vulkan output
on PineTab2 (Mali-G52 r1 MC1) 2026-05-20.
Patches Mesa 26.0.6's PanVk Vulkan driver:
- VK_KHR/EXT_robustness2 + nullDescriptor exposed for PAN_ARCH 6/7
- has_vk1_1 / has_vk1_2 = true on Bifrost
Patches applied via sed in PKGBUILD prepare() (cleaner than maintaining
a Mesa fork for two two-line tweaks; upstream context drifts between
Mesa releases would make a literal .patch brittle).
Co-installs at /usr/lib/panvk-bifrost/ — stock mesa untouched. Stock
libvulkan_panfrost.so and its ICD JSON keep working for everyone not
opting into the patched driver.
Ships /usr/bin/brave-vulkan that wires up:
VK_ICD_FILENAMES=/usr/lib/panvk-bifrost/icd.json
PAN_I_WANT_A_BROKEN_VULKAN_DRIVER=1
MESA_VK_VERSION_OVERRIDE=1.2 # ANGLE needs apiVersion>=1.1; the
# has_vk1_x flags don't move it, so
# the env-var override carries that
brave --use-gl=disabled --enable-features=Vulkan --use-vulkan=native
--ozone-platform=x11 --no-sandbox --disable-gpu-sandbox
--ignore-gpu-blocklist "$@"
Side-steps the stock "GLES3 is unsupported / GPU process exits" failure
documented in panvk-bifrost/README's "Consumer-side benefit" section.
Known limitation: WebGL/WebGL2 in-page won't work — ANGLE needs GLES3
which needs VK_EXT_transform_feedback, which PanVk-Bifrost doesn't
currently support. Browser chrome + standard page rendering work fine.
Gitea Actions job mesa-panvk-bifrost-aarch64 added to build.yml,
patterned on libva-v4l2-request-fourier-aarch64. Mesa build is slow
(~30-60min on actrunner-aarch64). Standalone (no needs:),
continue-on-error so it doesn't block other jobs.
Campaign artifacts: ~/src/panvk-bifrost/{README.md, phase8_iteration9_close.md,
phase0_evidence/iter9_brave_vulkan_breakthrough.txt}.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
481279c adds packaging/systemd/{daedalus-v4l2.service,modules-load} to
the upstream tree. This commit wires those into both the Arch
(PKGBUILD + .install) and Debian (build-deb.sh + postinst/prerm/postrm)
package layouts so that a fresh install of daedalus-v4l2 + daedalus-
v4l2-dkms on a Pi 5 leaves the kernel module loaded at next boot AND
the userspace broker daemon enabled — no manual modprobe / systemctl
enable dance needed.
arch/daedalus-v4l2:
* pkgver 0.1.0.r18.481279c, pkgrel reset to 1 (new upstream pin).
* Dropped 'systemd-libs' from depends — daemon doesn't link
libsystemd (no sd_notify); the .service unit is consumed by
systemd-the-init, no link-time dep required.
* package() now installs the .service to
/usr/lib/systemd/system/daedalus-v4l2.service and the modules-
load drop-in to /usr/lib/modules-load.d/daedalus-v4l2.conf.
* New .install file: post_install/post_upgrade run daemon-reload +
enable + systemd-modules-load + try-restart on upgrade; pre/post
remove tear down cleanly. No auto-start — operator decides.
arch/daedalus-v4l2-dkms:
* pkgver bump to 481279c, pkgrel reset to 1. Kernel module itself
is bit-identical to f0cd29a (commit only touches packaging/) but
bumping in lockstep keeps DKMS source-tree pkgver matched to the
userspace pkgver so /etc/modules-load.d points at a module that
actually exists.
debian/daedalus-v4l2:
* Same bump 481279c, PKGREL=1.
* build-deb.sh stages /lib/systemd/system/ + /usr/lib/modules-load.d/
and installs both files.
* Generates DEBIAN/postinst that runs daemon-reload, enables the
service, triggers systemd-modules-load, and conditionally starts
the service iff /dev/daedalus-v4l2 is already present (uses the
same ConditionPathExists= guard as the unit file so apt install
doesn't fail loudly on a host where dkms hasn't built yet).
* Generates DEBIAN/prerm (stop + disable on remove) and
DEBIAN/postrm (daemon-reload).
debian/daedalus-v4l2-dkms:
* Lockstep version bump, PKGREL=1. Postinst (loud-warn-on-missing-
headers) unchanged.
Verified the SHA via local rev-parse against ~/src/daedalus-v4l2 —
481279c is the "packaging/systemd: ship daedalus-v4l2.service +
modules-load drop-in" commit on main.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
DKMS build for daedalus_v4l2 fails against kernel 6.18+ with:
daedalus_v4l2_main.c:1049: error: too few arguments to function
'v4l2_fh_add'
v4l2-fh.h:97: void v4l2_fh_add(struct v4l2_fh *fh, struct file *filp);
(same for v4l2_fh_del). Signature changed exactly at v6.18 — verified
v6.13–v6.17 still use the one-arg form via raw.githubusercontent.com
tag walk.
Upstream commit f0cd29a wraps the calls with LINUX_VERSION_CODE so the
module keeps building against:
* 6.12 LTS / RPi 6.12.75 (one-arg) — hertz
* 6.12.88+deb13-arm64 (one-arg)
* 6.18.29+rpt-rpi-2712 (file* arg) — higgs running kernel
Higgs (Pi CM5) was hitting this: daedalus-v4l2-dkms 0.1.0+r16+gf55b2cd
showed 'installed' in dpkg but DKMS autoinstall failed for the running
6.18.29 kernel. Re-running 'dkms autoinstall' after this bump succeeds
+ /dev/daedalus-v4l2 appears.
Also widens debian/daedalus-v4l2-dkms Recommends from
linux-headers-generic | linux-headers
to
linux-headers-rpi-2712 | linux-headers-rpi | linux-headers-generic | linux-headers
so apt pulls the right metapackage on Raspberry Pi OS / RPi-2712
kernels by default.
Userspace pkgver bumps in lockstep (no userspace change in f0cd29a, but
keeps daedalus-v4l2 + daedalus-v4l2-dkms versions matching for
LIBVA_DRIVER_NAME selection sanity).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Stock firefox.desktop disappears when our 'provides=firefox' replaces stock
firefox-arch, so installing firefox-fourier left the user without a Plasma/GNOME
start-menu entry. Add firefox-fourier.desktop with Categories=Network;WebBrowser;
(routes under Internet on KDE Plasma 6), MIME types for the usual web schemes,
new-window / private-window actions, and the 128px icon from the package's
internal browser/chrome/icons tree.
Reported on ohm (PineTab2 / Plasma 6) — manual /usr/share/applications shim
proved the file works; this commits it to the recipe so future installs Just Work.
Bumps pkgrel from 5 to 6. Cumulative regenerated from the redone
per-series reconstruction in kernel-agent (replacing the broken
PR #33 attempt with a proper rebase onto v7.0-danctnix1 baseline).
cumulative.patch: 162 716 -> 279 554 bytes
b2sum: 50397711a6a3... -> eb179c03f35a...
manifest.lock: 32 resolved patches (was 4 — c5x interim collapsed
the bes2600 driver scope into one cumulative blob;
per-series properly tracks each fix)
bes2600 series-dirs in kernel-agent: now 25 individual series-dirs
(one per cleanups commit + Patch H), each with the
proper in-tree drivers/staging/bes2600/* paths
Built + installed on ohm 2026-05-19 23:39. Functional verification:
uname: 7.0.0-danctnix1-6-pinetab2-danctnix-besser
srcversion: 1A919EED0E6DC2478559B17 (differs from pkgrel=5's
BEB625FA7443171EA8D55F7 — not byte-equivalent;
functional equivalence verified: wlan0 associates,
bes2600_btuart loads, Pattern A 0, no WARN/BUG)
Per-fix revertability now real: removing an include from
fleet/ohm.yaml drops that fix from the cumulative. Bisecting on
kernel-agent side becomes practical.
The recipes pinned `f55b2cdab8a8c0bc04e8c1bb1d0b6ca85e7d96d2` as the
"Phase 8.13: byte-exact end-to-end via libva" commit, but that SHA
does not exist in git.reauktion.de/reauktion/daedalus-v4l2.
The actual `main` tip (per gitea's for-each-ref) is
`f55b2cd002afdfd08f3c093627317f92e4929074` — same 7-char prefix
(`f55b2cd`), different full hash. Likely a manually-constructed SHA
based on a short prefix from a working copy that was never pushed.
git archive --format=tar.gz on the bad SHA fails with
fatal: not a tree object: f55b2cdab8a8...
which surfaces as 500 from Gitea's archive endpoint, which curl in
the CI build-deb.sh sees as `curl: (22) ... error: 500`.
Diagnosed by tailing gitea.log during a fresh archive request from
the CI runner; the underlying `git archive` command in the gitea
container is logged with the full failing SHA + error.
Fixed in all four recipes (arch + debian, daedalus-v4l2 + dkms).
pkgrel bumped to signal new build (PKGVER short-prefix `gf55b2cd`
stays the same — both bad and good SHA share that prefix).
fermi's makepkg.conf already has BUILDENV=(distcc ...) which prepends
/usr/lib/distcc/bin to PATH at build time. But Mozilla's mach
configure picks CC/CXX from the environment directly — it doesn't
treat the distcc shim in PATH as the default C compiler unless the
env vars are set explicitly. Without this guard the distcc workers
sat idle while mach drove a local-only build.
Mirrors the explicit-distcc pattern already used in
ffmpeg-v4l2-request-fourier/PKGBUILD.
Caveat documented in the comment: only the C/C++ portion
distributes. rustc and host-only build steps stay local. Empirical
~30-40% wall-clock improvement on a 4-worker pool (tesla, dcc1, dcc2,
ampere via Avahi zeroconf).
pkgrel bumped so a rebuild publishes a new package even though the
binary output for users is unchanged (build process speedup only).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
`package_qt6-xcb-private-headers-fourier()` depended on
`qt6-base-fourier=$pkgver` (= literal "6.11.1"), but the package itself
ships with `epoch=1` so the installed version is `1:6.11.1-1`.
Pacman's strict-equality version compare treats "6.11.1" as epoch=0 and
"1:6.11.1" as epoch=1 — mismatch — and refuses every upgrade involving
qt6-xcb-private-headers-fourier with "unable to satisfy dependency".
Fix: include the epoch prefix in the dep string —
`qt6-base-fourier=$epoch:$pkgver`. pkgrel bumped to 2 so the rebuild
publishes a new package even though only the dep string changed.
Observed on ohm 2026-05-18 after the broader fleet pacman -Syu —
worked around there with --assume-installed; this fixes it properly.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The PR branch contained the unpacked Linux 7.0 source tree
(~81k files, ~38M additions) under src/. These are makepkg build-dir
artifacts that should never be committed; PKGBUILD downloads + extracts
them at build time.
Their presence inflated the PR file-count display to 81030 changed
files. Removed src/ from tracking and added a stronger .gitignore
in the package dir to prevent regressions.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Bumps all 4 daedalus packages (arch + debian × userspace + dkms)
to pick up daedalus-v4l2 f55b2cd: "kernel: media_request_get/put
around inf->req (UAF safety)".
Closes the SHIP-WITH-EYES-OPEN concern Sonnet flagged in the
pre-deployment review — without explicit media_request_get on
capture + media_request_put on completion, a concurrent
MEDIA_IOC_REQUEST_REINIT or process-kill triggering
buf_request_complete from the cancel path could drop vb2's
reference before our completion handler ran, leaving inf->req
dangling through v4l2_ctrl_request_complete + buf_done.
Matches the cedrus / rkvdec refcount pattern. No protocol
change, no API change, no consumer-side adjustment required.
Same byte-exact output verified on hertz post-fix (libva path:
match; standalone test_m2m_stream: 30/30 frames).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Sonnet pre-deployment review caught a BLOCKER: on a fresh higgs
(Debian 13 / Pi CM5) install without the RPi kernel headers
pre-installed, the postinst's `dkms autoinstall || true` silently
swallowed the build failure. Package appeared installed but the
.ko was absent; `modprobe daedalus_v4l2` then failed and the
entire stack was dead with no clear pointer to the cause.
Fix in both ecosystems:
debian/daedalus-v4l2-dkms/build-deb.sh:
- After `dkms autoinstall`, verify the post-condition with
`dkms status -m daedalus_v4l2 -v VER -k $(uname -r)`.
- If the module isn't 'installed' / 'loaded' for the running
kernel, emit a yellow-bolded ANSI warning naming the most
likely cause (kernel headers package missing) and the exact
recovery steps (linux-headers-rpi-2712 for RPi or
linux-headers-$KERNELVER for Debian generic, then
`dkms autoinstall` + `modprobe`).
- Colour only on TTY; the warning is unconditional regardless.
arch/daedalus-v4l2-dkms/:
- New daedalus-v4l2-dkms.install with post_install +
post_upgrade hooks that run the same `dkms status` check.
- post_upgrade catches the case where a kernel-headers package
was uninstalled / pruned between upgrades, silently
regressing the build.
- Wired into the PKGBUILD via install="${pkgname}.install".
Both versions point at the actual repair commands rather than
just saying "build failed", so the user is one apt/pacman away
from a working stack instead of debugging dkms internals.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
PKGBUILD pinning the same daedalus-v4l2 @ f04d700 as the
userspace sibling. Installs kernel/ source to
/usr/src/daedalus_v4l2-<ver>/ with a generated dkms.conf;
AUTOINSTALL=yes builds the module against the running kernel.
The kernel/ Makefile uses -I$(src)/../include for the shared
protocol header. In the userspace tree that's daedalus-v4l2/include/;
for DKMS we flatten by copying the header into kernel/include/
and patching the Makefile in package() to point there.
Sibling Debian package: debian/daedalus-v4l2-dkms/
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
kernel-agent corrected the @@ hunk counts in the SCS xor-neon patch
(the previous -9,7 +9,12 'fix' was an overcorrection; actual is
-9,6 +9,11). pkgrel=4 build #4 silently tolerated the wrong counts
because the trailer was stripped, but pkgrel=5 with besser#18
behind SCS exposed the inconsistency.
b2sum: ceec602afa8574c74354... -> 50397711a6a3ba522283...
Size unchanged 162 716.
Kernel-agent restored the trailer on the SCS patch (SCS is no longer
last in the includes ordering — besser#18 is). Cumulative grows
+12 bytes for the restored '-- \n2.54.0\n' sentinel.
b2sum: 0eb091ddaba4... -> ceec602afa85...
Size: 162 704 -> 162 716.
pkgrel=5 = pkgrel=4 + the besser#18 lockdep fix added to the
manifest's includes (in-tree mirror of bes2600-dkms d95453c).
Cumulative b2sum: 334c37b5d37067982bd9... -> 0eb091ddaba4a8f1c3c2a78...
Size: 157 446 -> 162 704 (+5 258 = besser#18 patch with trailer
stripped per the convention now established for the LAST patch in
ka-promote concatenation).
This single pkgrel satisfies all three deliverables of the ohm
migration goal: kernel-agent flow + new marfrit-packages pkg + the
besser#18 fix it contains.
After kernel-agent dropped the wrong git-format-patch trailer from
the SCS xor-neon patch (the trailer was a misdiagnosed fix; the
real problem was the @@ hunk counts).
Cumulative b2sum: ad9e2cb533957f218058... -> 334c37b5d37067982bd9...
Size: 157 458 -> 157 446 (12 byte trailer gone).
Re-promoted after kernel-agent fixed malformed @@ hunk counts in the
SCS xor-neon patch (kernel-agent commit ahead of this on
noether/migrate-pinetab2-pkg-and-patches).
b2sum: bd42cd39106298879eeb... -> ad9e2cb533957f218058...
size unchanged at 157 458.
marfrit
claude-noether
claude-noether
test0r