παιδιά επειδή το site της x.org δεν μου το ανοίγει (μάλλον θα έχει κάποιο πρόβλημα ο server) τι άλλες επιλογές υπάρχουν εκτός από low -mid- high(φαντάζομαι) και default? Υπάρχει ας πούμε επιλογή auto?
Edit: ok μου άνοιξε το site της x.org.
Οπότε σύμφωνα με τις πληροφορίες στο site τις οποίες παραθέτω
έγραψε:KMS Power Management Options
Kernel 2.6.35 or newer is required. The pm code supports two basic methods:
"dynpm"
"profile"
You can select the methods via sysfs. Echo "dynpm" or "profile" to /sys/class/drm/card0/device/power_method.
Controlling the fan speed directly is not possible (and would be very dangerous), but it can be lowered by setting lower power profile.
The "dynpm" method dynamically changes the clocks based on the number of pending fences, so performance is ramped up when running GPU intensive apps, and ramped down when the GPU is idle. The reclocking is attemped during vertical blanking periods, but due to the timing of the reclocking functions, doesn't not always complete in the blanking period, which can lead to flicker in the display. Due to this, dynpm only works when a single head is active.
The "profile" method exposes five profiles that can be selected from:
"default"
"auto"
"low"
"mid"
"high"
Select the profile by echoing the selected profile to /sys/class/drm/card0/device/power_profile.
"default" uses the default clocks and does not change the power state. This is the default behavior.
"auto" selects between "mid" and "high" power states based on the whether the system is on battery power or not. The "low" power state are selected when the monitors are in the dpms off state.
"low" forces the gpu to be in the low power state all the time. Note that "low" can cause display problems on some laptops; this is why auto does not use "low" when displays are active.
"mid" forces the gpu to be in the "mid" power state all the time. The "low" power state is selected when the monitors are in the dpms off state.
"high" forces the gpu to be in the "high" power state all the time. The "low" power state is selected when the monitors are in the dpms off state.
The "profile" method is not as agressive as "dynpm," but is currently much more stable and flicker free and works with multiple heads active.
Power management is supported on all asics (r1xx-evergreen) that include the appropriate power state tables in the vbios; not all boards do (especially older desktop cards).
Thermal sensors are implemented via external i2c chips or via the internal thermal sensor (rv6xx-evergreen only; supported in 2.6.36 or newer); not all OEMs implement a thermal sensor. To get the temperature on asics that use i2c chips, you need to load the appropriate hwmon driver for the sensor used on your board (lm63, lm64, etc.). The drm will attempt to load the appropriate hwmon driver. On boards that use the internal thermal sensor, the drm will set up the hwmon interface automatically. When the appropriate driver is loaded, the temperatures can be accessed via lm_sensors tools or via sysfs in /sys/class/hwmon .
πιστεύω ότι η επιλογή auto είναι η καλύτερη αφού αλλάζει το power state ανάλογα την κατάσταση του pc. Προς το παρών αυτό έχω επιλέξει και δεν μου έχει δημιουργίσει κανένα πρόβλημα και έχω παρατηρήσει πτώση θερμοκρασίας κατά 5-6 βαθμούς και αν το αφήσω σε κατάσταση ηρεμίας τότε πέφτει στα ίδια επίπεδα όπως όταν το είχα σε low. Οπότε μια χαρά πλέον.
Η απορία μου όμως είναι γιατί η canonical το έχει στην επιλογή default από προεπιλογή και όχι στo auto? Θα το αναφέρω για να δω τι απάντηση θα μου δώσουν...