# Resume Marker — 2026-08-20
# Status: kernel ready for compile, workhorse ready for Xfce switching, stopped before heavy build

## What was done this session
1. **Kernel build environment — READY** (stopped before heavy compile per user request)
   - Kernel: vanilla v6.19.3 + ipu4 drivers (GRUB entry LOCALVERSION=-ipu4p)
   - `./check` green, git clean
   - Rust toolchain: stable 1.97.1 (default) + nightly 1.100.0 installed via rustup
   - CONFIG_RUST=y set in .config, CONFIG_RUST_IS_AVAILABLE=y
   - `scripts/target.json` has `rustc-abi: x86-softfloat` (rejected by stable, OK with nightly)
   - Build fix identified: `RUSTC=/root/.cargo/bin/rustc RUSTLIB_SRC=... make ...` to use nightly
   - Build NOT started — user wants new session for the heavy compile

2. **GUI session switching — READY** (workhorse has Xfce, GDM shows it)
   - Xfce 4.20.2 + xfce4-goodies installed on workhorse
   - `/usr/share/xsessions/xfce.desktop` present, `Exec=startxfce4`
   - GDM (gdm3) active, shows xfce.desktop + xfce-wayland.desktop at login gear menu
   - User can switch GNOME↔Xfce at GDM login by clicking gear icon → "Xfce Session"
   - lightdm package removed (was stuck half-configured; cleaned up via dpkg purge)
   - No lightdm; gdm3 is the DM; /etc/X11/default-display-manager = /usr/sbin/gdm3

## What remains (for next session / new session)
- **Kernel compile**: `make -j$(nproc) bzImage modules` with nightly rustc override
  - Command pattern: `cd /home/CUBELinux/CUBELinux-2/src/CUBELinux-build && RUSTC=/root/.cargo/bin/rustc HOSTRUSTC=/root/.cargo/bin/rustc make -j$(nproc) bzImage modules`
  - Need to confirm RUST_LIB_SRC path for nightly toolchain
  - User explicitly asked NOT to auto-launch — new session should decide timing
- **GRUB**: new entry for -cube kernel; verify ipu4p entry still works
- **Post-boot verification**: cube fs mount, daemon startup, camera (ipu4) if desired

## Notes
- User restarted the session; this marker captures where we left off
- User directive: "get project to point of compiling new kernel, then stop so we can use new session for that"
- Heavy compile (make -j8) saturates all cores + memory — do NOT start without user go