v1.7.4

v1.7.4 — 2026-08-27

• Added: VRR (Variable Refresh Rate) and ALLM (Auto Low Latency Mode)
  support for DP-to-HDMI PCON adapters — enables 4K120 VRR over HDMI
  on displays like Samsung QN80A and LG C3 OLED when using a DP-to-HDMI
  cable with a PCON chip (e.g. CH7218). The patched amdgpu.ko now
  includes:
  • Software AMD VSDB parsing fallback (parse_amd_vsdb_cea_direct):
    parses the AMD Vendor Specific Data Block directly from the CEA
    extension block without relying on DMUB firmware, so FreeSync
    capabilities are detected even when the DMUB parser fails (common
    with PCON HDMI connections).
  • LFC-aware VRR range extending (extend_range_from_vsdb):
    replaces the old compare_ranges logic. Always extends the upper
    refresh rate limit, but only extends the lower limit when the
    current minimum disables LFC (Low Framerate Compensation), avoiding
    blanking on displays where the manufacturer adjusted VRR min after
    release.
  • ALLM via DP (bc250-allm-via-dp.patch): forces
    content_type=GAME on the display stream when the sink reports
    ALLM support in its EDID, letting the PCON generate HF-VSIF
    autonomously to trigger the TV's Game Mode.
• Added: Toolkit now prompts to add amdgpu.freesync_pcon_allow_all=1
  to the GRUB command line after installing the audio fix (or combined
  fix), and offers to remove it on revert. This kernel parameter is
  required for VRR to work over PCON adapters.
• Removed: Legacy EDID patching system (patch_edid_vrr.py) and all
  related manual EDID firmware injection. The toolkit now cleans up any
  existing EDID firmware binaries (/lib/firmware/edid/*.bin) and
  drm.edid_firmware= GRUB entries at the start of the audio fix
  install, ensuring the display's native EDID is used. This works
  for any TV brand (Samsung, LG, Sony, etc.).
• Note: Users who previously had VRR issues with DP-to-HDMI PCON
  cables (see bazzite#4532)
  should update their PCON adapter firmware and reinstall the audio fix.
  The VRR range is now read correctly from the native EDID (e.g.
  VRRmin 40 Hz – VRRmax 120 Hz on LG C3).

v1.7.3

v1.7.3 — 2026-08-24

• Fixed: Pacman keyring auto-repair now works in all locales (Spanish,
  Portuguese, Ukrainian, etc.) — all pacman/AUR commands are forced to
  LC_ALL=C so error detection matches English strings regardless of the
  user's system language. Previously, localized error messages (e.g.
  depósito de claves in Spanish) were never matched, causing Install All
  to fail without attempting the automatic keyring repair.

v1.7.2

v1.7.2 — 2026-08-24

• Fixed: Pacman keyring errors in non-English locales (Ukrainian/Russian)
  are now detected and auto-repaired — Install All no longer fails when the
  system locale produces error messages like в'язка ключів недоступна.
• Fixed: Verify My Setup no longer hangs after the CPU Core Unlock line —
  the bc250memcfg binary call now has a 5-second timeout.

v1.7.1

v1.7.1 — 2026-08-23

• Fixed: Mesa 26.2.0-rc3 tarball is now vendored in the repo — the
  build no longer fails when archive.mesa3d.org is unreachable.
• Changed: Menu reorganized — removed standalone DP Audio (old 7) and
  GFX1013 (old 11) options since both are already included in the Combined
  Audio+GFX1013 install. Install All now includes AC-3 Surround as the
  final step.

v1.7.0

v1.7.0 — 2026-08-22

• Improved: GPU activity telemetry now uses amdgpu_fence_count_emitted
  (32 samples) instead of GRBM_STATUS polling — GRBM_STATUS reads all-ones
  on Cyan Skillfish, so gpu_busy_percent was unreliable. Fence count is the
  same signal that backs fdinfo drm-engine-gfx accounting.
• New: cs_metrics_cache_ms module parameter (25 ms default) for bulk SMU
  metrics refresh caching, matching MastaG's implementation.
• Changed: Cache defaults (cs_gfxclk_cache_ms, cs_activity_cache_ms)
  reduced from 100 ms to 25 ms for more responsive telemetry.
• Changed: Telemetry and tunable-cache patches consolidated into a single
  patch file (bc250-cyan-skillfish-telemetry-cache.patch) — simplifies the
  build and ensures correct patch ordering.
• Internal: Mesa FSR4 V3 patch (0005) updated with upstream commit header;
  no code changes, no Mesa rebuild required.

v1.6.0

v1.6.0 — 2026-08-22

• New: Intel BE200 Wi-Fi 7 firmware installer added to the Extras
  menu — downloads and installs the BE200 firmware so the card is
  recognized without a full kernel rebuild.
• New: ALLM-via-DP patch added to the audio-fix build — sends AVI
  infoframe with content_type=Game over DP SDP to DP-to-HDMI PCONs
  (e.g. CH7218) in Source Control Mode, enabling the PCON to autonomously
  generate HDMI Forum VSIF with ALLM. Also enables PCON Source Control
  Mode and HDMI Link via DPCD. Note: ALLM activation depends on PCON
  firmware support; the CH7218 with firmware Dp6.0.30 does not appear to
  generate HF-VSIF autonomously yet.
• Fix: amdgpu build now retries with -j1 if GCC 15.x hits an
  internal compiler error (ICE) during parallel build.

v1.5.0

v1.5.0 — 2026-08-21

• New: DS5 Bridge PS Button fix — patched hid-playstation.ko
  that exposes BTN_MODE for the DS5-Linux-Bridge, enabling Steam/Gamescope
  chord combos (PS+Cross=QAM, PS+Triangle=Steam overlay) with a custom
  Steam chord VDF config.
• New: Mesa/RADV patches updated from MastaG's latest (Aug 2026) —
  compute queue fix, mesh/task shaders, taskmesh queries, and opt-in
  RADV_GFX103=1 GFX10.3 promotion all refreshed.
• New: FSR4 V3 deferred SDot hybrid (from dmorazasanchez/bc250-fsr4)
  replaces the old V2 selective sdot — adds iadd(0,SDot) fusion, MAD24
  chains, and a dense SDot pre-pass for better INT8 throughput.
• New: Native mesh shader option (from lonewolf0622) — MESH-only
  shaders on GFX10 without GFX10.3 spoofing. Selectable at install time
  alongside the existing MastaG mesh/task approach.
• New: VRR EDID patch for FreeSync over DP→HDMI PCON — zeros HDMI
  VTEM to prevent flickering, adds AMD VSDB v1 for FreeSync SPD.
• Fixed: EDID detection on sysfs — [[ -s ]] reports size 0 for
  sysfs files; switched to wc -c so the VRR EDID patch works.

v1.4.0

v1.4.0 — 2026-08-19

• New: SMU SCLK range widened to 350–2230 MHz (from MastaG's kernel
  patch set), allowing userspace governors to drive the full clock range.
• New: FSR4 dp4a reassociation optimization now uses a selective
  approach — avoids catastrophic register spilling in pathological
  shaders while keeping the performance win on most kernels.
• New: Experimental display trial script (extras/display-trial/)
  for testing forced EDID and DP-1 enable — auto-reverts on 2nd reboot
  if unconfirmed. Useful for diagnosing boot video and session-switch
  display loss on DP-to-HDMI adapter setups.
• New: HDMI AC-3 encoding implementation guide for other operating
  systems (documents the ALSA a52 plugin + PipeWire approach).
• Fixed: Xbox adapter (xone-dkms) install now detects and installs
  the correct kernel headers package before building the DKMS module.
• Removed: GFX clock gating (--cg/--cg-unvalidated) flags and
  patches removed from the combined fix — the feature was experimental
  and unvalidated on BC-250 hardware.

v1.3.1

v1.3.1 — 2026-08-17

• Fixed: AC-3 Surround install/revert now works correctly when the
  toolkit is run via sudo. PipeWire and WirePlumber commands are
  executed in a separate user-session script (ac3-user-setup.sh) as
  the real user, fixing card detection failures and hangs that occurred
  when pactl/systemctl --user were called as root.
• Fixed: WirePlumber config corrected to use api.acp.disable-pro-audio
  instead of api.alsa.use-acp, matching Valve's working valve-fremont
  hardware profile. The previous setting prevented the hdmi-ac3.conf
  profile set from loading, leaving only generic on/off profiles.
• New: AC-3 Surround status now shown in "Verify My Setup" (option V)
  with a dedicated Audio section showing whether AC-3 is installed and
  whether the profile is currently active.
• Changed: Toolkit logs (trace, run, error, diagnostic) now saved in
  <toolkit-dir>/logs/ instead of ~/.bc250-toolkit/logs/. Error logs
  are still copied to the Desktop on failure.

v1.3.0

v1.3.0 — 2026-08-17

• New: HDMI AC-3 Surround Encoding — enables real-time Dolby Digital
  5.1 encoding over HDMI/DisplayPort via eARC. Previously impossible on
  SteamOS with the BC-250 because the hardware profile that loads the
  AC-3 audio profiles was never triggered (the BC-250's DMI identifies
  as "AMD BC-250" instead of Valve's "OEM F7F"). This installs a udev
  rule and WirePlumber config that activates the built-in hdmi-ac3.conf
  profile set, giving a 5.1 sink that encodes all audio to AC-3 via the
  native ALSA a52 plugin. Works with any active DisplayPort-to-HDMI
  adapter (not brand-specific). Zero added latency, ~1-2% CPU overhead.
  Stereo content is automatically upmixed to 5.1. The sink stays active
  for 1 hour after the last sound to prevent the receiver from falling
  back to PCM. Available as menu option 13/13R.