feat(archsetup): set a CPU governor with cpupower

I added cpupower to the Power section: install it, set the governor in /etc/default/cpupower, and enable cpupower.service so the governor applies at boot.

The governor is performance. It's the one value valid under every cpufreq driver. amd_pstate and intel_pstate in active mode accept only performance or powersave, while passive and acpi-cpufreq also allow schedutil and ondemand. Laptops want powersave, so that's a per-host override to layer on later. The enable is non-fatal, matching the rest of the Power section.

1 files changed, 12 insertions, 0 deletions

diff --git a/archsetup b/archsetup
index 367ecd2..566a186 100755
--- a/archsetup
+++ b/archsetup
@@ -1228,6 +1228,18 @@ EOF
     action="enabling upower service" && display "task" "$action"
     systemctl enable upower >> "$logfile" 2>&1  || error_warn "$action" "$?"
 
+    # cpupower applies a CPU frequency governor at boot. 'performance' is valid
+    # under every cpufreq driver -- amd_pstate/intel_pstate active mode accept
+    # only performance and powersave, while passive/acpi-cpufreq also allow
+    # schedutil/ondemand. Laptops (velox) want 'powersave'; that's a per-host
+    # override candidate. Non-fatal -- an unsupported governor just fails to apply.
+    pacman_install cpupower
+    action="setting cpupower governor to performance" && display "task" "$action"
+    sed -i "s/^#\?governor=.*/governor='performance'/" /etc/default/cpupower >> "$logfile" 2>&1 || \
+        error_warn "$action" "$?"
+    action="enabling cpupower service" && display "task" "$action"
+    systemctl enable cpupower.service >> "$logfile" 2>&1 || error_warn "$action" "$?"
+
     # Secure Shell
 
     display "subtitle" "Secure Shell"