@@ -16,7 +16,7 @@ report those to their respective projects.
 | Kernel | `7.2.6-skillfishos` (+ `-x64`) | yes |
 | Kernel | `7.2.0-skillfishos`, `7.1.7-skillfishos` | previous series, best effort |
 | Kernel | `7.0.11-skillfishos` and older | no |
-| Apps | `skillfish-*` `26.09.45` or newer | yes |
+| Apps | `skillfish-*` `26.09.46` or newer | yes |
 
 Fixes are delivered through the signed APT repository — `sudo apt update && sudo apt upgrade`.
 The installed system does not point at a single address: it carries a mirror list
 
@@ -33,6 +33,19 @@
   <pkgname>skillfish-base</pkgname>
   <content_rating type="oars-1.1"/>
   <releases>
+    <release version="26.09.46" date="2026-09-22">
+      <description>
+        <p>Services that were meant to start on their own now do so on systems installed from an ISO: the 40 compute units at boot, the fan control, the sensors and the Hub update check. Our Mesa gives the desktop back to Debian's if a library it needs goes missing, instead of leaving it without acceleration.</p>
+        <p xml:lang="it">I servizi che dovevano partire da soli ora partono anche sui sistemi installati da una ISO: le 40 unità di calcolo all'avvio, il controllo della ventola, i sensori e il controllo aggiornamenti dell'Hub. La nostra Mesa restituisce il desktop a quella di Debian se manca una libreria che le serve, invece di lasciarlo senza accelerazione.</p>
+        <p xml:lang="fr">Les services qui devaient démarrer seuls le font désormais aussi sur les systèmes installés depuis une ISO : les 40 unités de calcul au démarrage, le contrôle du ventilateur, les capteurs et la vérification des mises à jour du Hub. Notre Mesa rend le bureau à celle de Debian si une bibliothèque dont elle a besoin disparaît, au lieu de le laisser sans accélération.</p>
+        <p xml:lang="es">Los servicios que debían arrancar solos ahora lo hacen también en los sistemas instalados desde una ISO: las 40 unidades de cómputo al arrancar, el control del ventilador, los sensores y la comprobación de actualizaciones del Hub. Nuestra Mesa devuelve el escritorio a la de Debian si falta una biblioteca que necesita, en lugar de dejarlo sin aceleración.</p>
+        <p xml:lang="pt">Os serviços que deviam arrancar sozinhos passam a fazê-lo também nos sistemas instalados a partir de uma ISO: as 40 unidades de computação no arranque, o controlo da ventoinha, os sensores e a verificação de atualizações do Hub. A nossa Mesa devolve o ambiente de trabalho à do Debian se faltar uma biblioteca de que precisa, em vez de o deixar sem aceleração.</p>
+        <p xml:lang="de">Dienste, die von selbst starten sollten, tun das jetzt auch auf Systemen, die von einer ISO installiert wurden: die 40 Recheneinheiten beim Start, die Lüftersteuerung, die Sensoren und die Update-Prüfung des Hubs. Unser Mesa gibt den Desktop an das von Debian zurück, wenn eine benötigte Bibliothek fehlt, statt ihn ohne Beschleunigung zu lassen.</p>
+        <p xml:lang="pl">Usługi, które miały uruchamiać się same, robią to teraz także w systemach zainstalowanych z obrazu ISO: 40 jednostek obliczeniowych przy starcie, sterowanie wentylatorem, czujniki i sprawdzanie aktualizacji w Hubie. Nasza Mesa oddaje pulpit Mesie z Debiana, jeśli brakuje potrzebnej jej biblioteki, zamiast zostawiać go bez akceleracji.</p>
+        <p xml:lang="ru">Службы, которые должны были запускаться сами, теперь запускаются и в системах, установленных с ISO: 40 вычислительных блоков при загрузке, управление вентилятором, датчики и проверка обновлений в Hub. Наша Mesa возвращает рабочий стол Mesa из Debian, если пропала нужная ей библиотека, вместо того чтобы оставить его без ускорения.</p>
+        <p xml:lang="uk">Служби, які мали запускатися самі, тепер запускаються і в системах, встановлених з ISO: 40 обчислювальних блоків під час завантаження, керування вентилятором, датчики та перевірка оновлень у Hub. Наша Mesa повертає робочий стіл Mesa з Debian, якщо зникла потрібна їй бібліотека, замість того щоб залишити його без прискорення.</p>
+      </description>
+    </release>
     <release version="26.09.45" date="2026-09-22">
       <description>
         <p>skillfish-cpu-governor: the CPU governor chosen in the Tuner or on the Remote Manager is put back at every boot and on every CPU that comes back online.</p>
 
@@ -69,6 +69,19 @@
     </screenshot>
   </screenshots>
   <releases>
+    <release version="26.09.46" date="2026-09-22">
+      <description>
+        <p>Tuner, CPU: Apply works on every installation. The tool it relies on now comes in its own package, skillfish-smu-oc, and Keep at boot for the compute units switches on the service that applies them.</p>
+        <p xml:lang="it">Tuner, CPU: Applica funziona su ogni installazione. Lo strumento su cui si appoggia ora arriva in un pacchetto suo, skillfish-smu-oc, e Mantieni all'avvio per le unità di calcolo accende il servizio che le applica.</p>
+        <p xml:lang="fr">Tuner, CPU : Appliquer fonctionne sur toutes les installations. L'outil sur lequel il s'appuie arrive maintenant dans son propre paquet, skillfish-smu-oc, et Conserver au démarrage pour les unités de calcul active le service qui les applique.</p>
+        <p xml:lang="es">Tuner, CPU: Aplicar funciona en todas las instalaciones. La herramienta en la que se apoya llega ahora en su propio paquete, skillfish-smu-oc, y Mantener al arrancar para las unidades de cómputo activa el servicio que las aplica.</p>
+        <p xml:lang="pt">Tuner, CPU: Aplicar funciona em todas as instalações. A ferramenta em que se apoia passa a vir no seu próprio pacote, skillfish-smu-oc, e Manter no arranque para as unidades de computação ativa o serviço que as aplica.</p>
+        <p xml:lang="de">Tuner, CPU: Anwenden funktioniert auf jeder Installation. Das Werkzeug, auf das es sich stützt, kommt jetzt in einem eigenen Paket, skillfish-smu-oc, und Beim Start behalten für die Recheneinheiten aktiviert den Dienst, der sie anwendet.</p>
+        <p xml:lang="pl">Tuner, CPU: Zastosuj działa w każdej instalacji. Narzędzie, na którym się opiera, jest teraz w osobnym pakiecie, skillfish-smu-oc, a Zachowaj przy starcie dla jednostek obliczeniowych włącza usługę, która je ustawia.</p>
+        <p xml:lang="ru">Tuner, CPU: «Применить» работает на любой установке. Инструмент, на который оно опирается, теперь поставляется отдельным пакетом skillfish-smu-oc, а «Сохранить при загрузке» для вычислительных блоков включает службу, которая их применяет.</p>
+        <p xml:lang="uk">Tuner, CPU: «Застосувати» працює на будь-якій установці. Інструмент, на який воно спирається, тепер постачається окремим пакетом skillfish-smu-oc, а «Зберегти під час завантаження» для обчислювальних блоків вмикає службу, яка їх застосовує.</p>
+      </description>
+    </release>
     <release version="26.09.45" date="2026-09-22">
       <description>
         <p>The Tuner now lets you choose the CPU governor, which decides how the processor picks its clock: performance keeps it high, schedutil lowers it when idle and raises it under load. The choice stays after a restart and on every core switched back on, and the same list is on the Remote Manager page. On a BC-250 without the CPU P-states, the button to turn them on is there instead. Closing the window no longer prints an error from the gamepad reader.</p>
 
@@ -786,6 +786,9 @@ def _motivo_cpu(self, r):
         }.get(f.get("campo"))
         if frase:
             return frase % (f.get("min", 0), f.get("max", 0))
+        if r.get("err") == "bc250_smu_oc is not installed: sudo apt install skillfish-smu-oc":
+            return L("bc250_smu_oc non è installato: sudo apt install skillfish-smu-oc",
+                     "bc250_smu_oc is not installed: sudo apt install skillfish-smu-oc")
         return r.get("err") or L("non applicata", "not applied")
 
     def _applica_cpu(self):
 
@@ -435,6 +435,9 @@ def apply_cpu_esito(mhz, scale, tmp):
     fuori = _cpu_fuori(mhz, scale, tmp)
     if fuori:
         return False, fuori
+    if not os.path.exists("%s/bc250_apply.py" % OC_DIR):
+        # issue #96: the backend was never installed on normal systems
+        return False, "bc250_smu_oc is not installed: sudo apt install skillfish-smu-oc"
     _log("CPU: %d MHz, scale %d, limite %d C" % (mhz, scale, tmp))
     prima = _cpu_conf()
     _write_cpu_conf(mhz, scale, tmp)
@@ -462,8 +465,10 @@ def _esito_cpu(ok, perche):
 
 
 def persist_cpu():
-    sh("python3 %s/bc250_apply.py --install %s" % (OC_DIR, OC_CONF))
-    sh("systemctl enable bc250-smu-oc.service")
+    # The unit comes with skillfish-smu-oc, guarded by skillfish-is-bc250.
+    # `bc250_apply.py --install` would overwrite it with upstream's, which has
+    # no guard: only the conf (written by apply_cpu_esito) and the enable here.
+    sh("systemctl daemon-reload; systemctl enable bc250-smu-oc.service")
 
 
 # An offline CPU has no topology/ in sysfs, so its core can't be read back.
@@ -725,6 +730,11 @@ def cu_keep_boot(on, rows):
     Only a mapping that is actually on the card can be kept: saving something
     that was never applied would arm the next boot with a routing nobody has
     seen work. The idea, and the check, are from tom lima's PR #80."""
+    # The unit is what reads the saved mapping at boot. Issue #98: on systems
+    # installed from an ISO it was never enabled, so a saved mapping, and the
+    # plain 40 CU, were never applied. Enabled here whatever the choice: with
+    # nothing saved it switches all 40 on.
+    sh("systemctl enable skillfish-cu.service", 30)
     if not on:
         p = sh("/usr/local/bin/skillfish-cu boot-clear", 30)
         return {"ok": p.returncode == 0, **{k: v for k, v in cu_get().items() if k != "ok"}}
 
@@ -170,7 +170,8 @@ def apply_cpu(mhz,scale,tmp):
     return r.returncode==0
 
 def persist_cpu():
-    sh("python3 %s/bc250_apply.py --install %s"%(OC_DIR,OC_CONF)); sh("systemctl enable bc250-smu-oc.service")
+    # the unit comes with skillfish-smu-oc: --install would replace it with upstream's, unguarded
+    sh("systemctl daemon-reload; systemctl enable bc250-smu-oc.service")
 
 def _gpu_curve(minmhz,minmv,maxmhz,maxmv):
     # Build a SMOOTH multi-point voltage curve (gentle clock/voltage transitions).
 
@@ -45,7 +45,19 @@ skillfish-freeze-check.service
 skillfish-gpu-freq.service
 skillfish-wol.service
 skillfish-firstboot-snapshots.service
+skillfish-cu.service
+skillfish-fand.service
+skillfish-sensori.service
+skillfish-gpu-calibrate-recovery.service
+skillfish-hub-refresh.timer
+skillfish-firstboot-flatpaks.service
+skillfish-cpu-governor.service
+skillfish-mesa.service
 "
+# ⚠️ Issue #98, and the reason the postinst enables did not take: they were
+# written inside `if [ -d /run/systemd/system ]`, which is false in a chroot.
+# skillfish-cu.service was missing from this list too, so no installed system
+# ever switched its 40 CU on at boot.
 
 mancanti=0
 for S in $SERVIZI; do
 
@@ -65,13 +65,34 @@ JSON
 install -m 0755 "$QUI/skillfish-mesa" "$P/usr/bin/skillfish-mesa" || exit 1
 install -m 0644 "$QUI/skillfish-mesa.service" "$P/usr/lib/systemd/system/skillfish-mesa.service" || exit 1
 
+# ⚠️ ISSUE #97: THE REAL DEPENDENCIES. Until 26.09.45 this said "python3" and
+# nothing else, so apt did not know our libraries need libLLVM.so.21.1 and the
+# rest. When Debian moved its Mesa to LLVM 22, libllvm21 became an orphan and
+# autoremove took it: every 64-bit EGL/GBM user broke with it, the desktop
+# included. dpkg-shlibdeps reads what the ELF files actually link against.
+# libdisplay-info is left out: the postinst copies the system one next to ours.
+SHL=$(mktemp -d)
+mkdir -p "$SHL/debian"
+printf 'Source: skillfish-mesa-gfx1013\n\nPackage: skillfish-mesa-gfx1013\nArchitecture: amd64\n' > "$SHL/debian/control"
+ELF=$(find "$P/opt/skillfish-gfx1013/lib" -type f -name '*.so*' ! -name 'libdisplay-info*' \
+      -exec sh -c 'head -c4 "$1" | grep -q ELF && echo "$1"' _ {} \; | sort)
+(cd "$SHL" && dpkg-shlibdeps -O -l"$P/opt/skillfish-gfx1013/lib/x86_64-linux-gnu" $ELF) \
+    > "$SHL/out" 2> "$SHL/err" || { cat "$SHL/err" >&2; exit 1; }
+SHLIBS=$(sed -n 's/^shlibs:Depends=//p' "$SHL/out")
+rm -rf "$SHL"
+case "$SHLIBS" in
+    *libllvm21*) ;;
+    *) echo "dpkg-shlibdeps did not find libllvm21: '$SHLIBS'" >&2; exit 1 ;;
+esac
+echo "Depends: python3, $SHLIBS"
+
 cat > "$P/DEBIAN/control" <<CTRL
 Package: skillfish-mesa-gfx1013
 Version: $VER
 Section: libs
 Priority: optional
 Architecture: amd64
-Depends: python3
+Depends: python3, $SHLIBS
 Recommends: skillfishos-kernel
 Maintainer: SkillFishOS <info@skillfishos.com>
 Description: SkillFishOS - our Mesa for the BC-250, the whole driver
@@ -103,9 +124,19 @@ Description: SkillFishOS - our Mesa for the BC-250, the whole driver
  Part of SkillFishOS.
 CTRL
 
+# A file trigger on the library directory: whenever a package puts files in it
+# or takes them out, the switch checks again that our libraries still load, and
+# gives the machine back to Debian's Mesa if they do not (issue #97). Without it
+# the check would only run at the next boot, with the desktop already broken.
+echo "interest-noawait /usr/lib/x86_64-linux-gnu" > "$P/DEBIAN/triggers"
+
 cat > "$P/DEBIAN/postinst" <<'POST'
 #!/bin/sh
 set -e
+if [ "$1" = "triggered" ]; then
+    /usr/bin/skillfish-mesa avvio || true
+    exit 0
+fi
 # ⚠️ libdisplay-info: la nostra .so e' compilata su sid e la chiede, ma il
 # runtime flatpak dei giochi non ce l'ha. Si copia quella del sistema accanto
 # alla nostra invece di spedirne una copia nostra: cosi' resta allineata agli
 
@@ -5,6 +5,7 @@
     skillfish-mesa off      Debian's driver back, everywhere
     skillfish-mesa stato    what is set right now
     skillfish-mesa avvio    what the boot service calls: apply the gate, quietly
+                            (and the dpkg trigger, after any library change)
     skillfish-mesa json     the same state as JSON, for the Control Center helper
 
 TWO HALVES, because a flatpak cannot see the host's ld.so.conf.
@@ -115,6 +116,33 @@ def installata():
     return os.path.exists(RADV)
 
 
+# Every library the machine loads from our directory once the ld.so.conf line
+# is there. dri_gbm.so is what libgbm opens for the compositor.
+CARICATE = ("libgallium-*.so", "libEGL_mesa.so.0", "libGLX_mesa.so.0", "libgbm.so.1",
+            "libvulkan_radeon.so", "gbm/dri_gbm.so")
+
+
+def librerie_mancanti():
+    """System libraries ours link against that cannot be found, or [].
+
+    ⚠️ Issue #97. Our Mesa is linked against libLLVM.so.21.1. On 21/09 Debian
+    moved its own Mesa to LLVM 22, which left libllvm21 with no reverse
+    dependency on a user's system, and the next `apt autoremove` took it away.
+    With our directory first in the ld.so cache every 64-bit process then
+    failed to load EGL and GBM: Xorg came up without glamor and DRI3, so
+    Vulkan had no queue that could present (games aborted with signal 6), and
+    kwin_wayland could not start at all. The package now depends on what it
+    links, and this check is the second line: if anything is still missing,
+    the machine goes back to Debian's driver instead of losing its desktop.
+    """
+    fuori = []
+    for schema in CARICATE:
+        for so in glob.glob(os.path.join(LIBS, schema)):
+            r = sh("LD_LIBRARY_PATH=%s ldd %s" % (LIBS, so), 30)
+            fuori += [l.split()[0] for l in r.stdout.splitlines() if "not found" in l]
+    return sorted(set(fuori))
+
+
 def perche_no():
     """The reason our driver must not be switched on here, or None."""
     if not installata():
@@ -123,6 +151,10 @@ def perche_no():
         return "questa macchina non e' una BC-250: la nostra Mesa e' compilata per quel chip"
     if not kernel_nostro():
         return "serve il kernel SkillFishOS: su un altro kernel le code compute piantano la GPU"
+    mancano = librerie_mancanti()
+    if mancano:
+        return ("missing system libraries: %s (sudo apt install --reinstall %s)"
+                % (", ".join(mancano), PACCHETTO))
     return None
 
 
@@ -293,9 +325,12 @@ def avvio():
     come up with a driver that opens the compute queues, and the decision cannot
     be taken once at install time because the kernel can change at any boot.
     """
-    if perche_no():
+    motivo = perche_no()
+    if motivo:
         if host_attivo():
             spegni_tutto(zitto=True)
+            # the journal is where anybody will look when the desktop changed driver
+            print("skillfish-mesa: back to Debian's Mesa: %s" % motivo, file=sys.stderr)
         return 0
     accendi_tutto(zitto=True)
     return 0