RaspbianTrucsEtAstuces
Révision datée du 10 février 2013 à 13:18 par Shazz (discussion | contributions)
Changer la config du clavier
sudo apt-get install console-setup sudo dpkg-reconfigure keyboard-configuration sudo setupcon
Changer le volume sonore
En mode console :
# Paramètre le volume à -5.00dB amixer set PCM -- -500
Overclocker la bestiole
Via raspi-config
sudo raspi-config
Via le fichier du GPU
sudo vi /boot/config.txt
arm_freq Frequency of ARM in MHz. Default 700 gpu_freq Sets core_freq, h264_freq, isp_freq, v3d_freq together. Default 250 core_freq Frequency of GPU processor core in MHz. It has an impact on ARM performance since it drives L2 cache. Default 250 h264_freq Frequency of hardware video block in MHz. Default 250 isp_freq Frequency of image sensor pipeline block in MHz. Default 250 v3d_freq Frequency of 3D block in MHz. Default 250 avoid_pwm_pll Unlink core_freq from the rest of the gpu. Can cause low quality analog audio, which should be fixed with latest firmware. Default 0 sdram_freq Frequency of SDRAM in MHz. Default 400 over_voltage ARM/GPU core voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. force_turbo will allow values higher than 6. Default 0 (1.2V) [5] over_voltage_sdram Sets over_voltage_sdram_c, over_voltage_sdram_i, over_voltage_sdram_p together over_voltage_sdram_c SDRAM controller voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. Default 0 (1.2V) [5] over_voltage_sdram_i SDRAM I/O voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. Default 0 (1.2V)[5] over_voltage_sdram_p SDRAM phy voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.025V steps. Default 0 (1.2V)[5] force_turbo Disables dynamic cpufreq driver and minimum settings below. Enables h264/v3d/isp overclock options. Default 0 initial_turbo Enables turbo mode from boot for the given value in seconds (up to 60) or until cpufreq sets a frequency. Can help with sdcard corruption if overclocked. Default arm_freq_min Minimum value of arm_freq used for dynamic clocking. Default 700 core_freq_min Minimum value of core_freq used for dynamic clocking. Default 250 sdram_freq_min Minimum value of sdram_freq used for dynamic clocking. Default 400 over_voltage_min Minimum value of over_voltage used for dynamic clocking. Default 0 temp_limit Overheat protection. Sets clocks and voltages to default when the SoC reaches this Celsius value. Setting this higher than default voids warranty. Default 85 current_limit_override Disables SMPS current limit protection when set to "0x5A000020". Can help if you are currently hitting a reboot failure when overclocking too high. [7]
Mode composite
sudo vi /boot/config.txt
sdtv_mode defines the TV standard for composite output (default=0)
sdtv_mode=0 Normal NTSC sdtv_mode=1 Japanese version of NTSC – no pedestal sdtv_mode=2 Normal PAL sdtv_mode=3 Brazilian version of PAL – 525/60 rather than 625/50, different subcarrier
sdtv_aspect defines the aspect ratio for composite ou
sdtv_aspect=1 4:3 sdtv_aspect=2 14:9 sdtv_aspect=3 16:9
sdtv_disable_colourburst disables colour burst on composite output. The picture will be monochrome, but possibly sharper
sdtv_disable_colourburst=1 colour burst is disabled
Pour info voici les modes SDTV :
480i (4:3) : 720x480 480i (16:9) : 720x480
=> https://en.wikipedia.org/wiki/Standard-definition_television