Difference between revisions of "RPiconfig"

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m (Which values are valid for my monitor?)
m (Video mode options)
Line 51: Line 51:
 
  '''These values are valid if hdmi_group=1 (CEA)'''
 
  '''These values are valid if hdmi_group=1 (CEA)'''
 
  hdmi_mode=1    VGA
 
  hdmi_mode=1    VGA
  hdmi_mode=2    480p  60
+
  hdmi_mode=2    480p  60Hz
  hdmi_mode=3    480p  60 H
+
  hdmi_mode=3    480p  60Hz H
  hdmi_mode=4    720p  60
+
  hdmi_mode=4    720p  60Hz
  hdmi_mode=5    1080i 60
+
  hdmi_mode=5    1080i 60Hz
  hdmi_mode=6    480i  60
+
  hdmi_mode=6    480i  60Hz
  hdmi_mode=7    480i  60 H
+
  hdmi_mode=7    480i  60Hz H
  hdmi_mode=8    240p  60
+
  hdmi_mode=8    240p  60Hz
  hdmi_mode=9    240p  60 H
+
  hdmi_mode=9    240p  60Hz H
  hdmi_mode=10  480i  60 4x
+
  hdmi_mode=10  480i  60Hz 4x
  hdmi_mode=11  480i  60 4x H
+
  hdmi_mode=11  480i  60Hz 4x H
  hdmi_mode=12  240p  60 4x
+
  hdmi_mode=12  240p  60Hz 4x
  hdmi_mode=13  240p  60 4x H
+
  hdmi_mode=13  240p  60Hz 4x H
  hdmi_mode=14  480p  60 2x
+
  hdmi_mode=14  480p  60Hz 2x
  hdmi_mode=15  480p  60 2x H
+
  hdmi_mode=15  480p  60Hz 2x H
  hdmi_mode=16  1080p 60
+
  hdmi_mode=16  1080p 60Hz
  hdmi_mode=17  576p  50
+
  hdmi_mode=17  576p  50Hz
  hdmi_mode=18  576p  50 H
+
  hdmi_mode=18  576p  50Hz H
  hdmi_mode=19  720p  50
+
  hdmi_mode=19  720p  50Hz
  hdmi_mode=20  1080i 50
+
  hdmi_mode=20  1080i 50Hz
  hdmi_mode=21  576i  50
+
  hdmi_mode=21  576i  50Hz
  hdmi_mode=22  576i  50 H
+
  hdmi_mode=22  576i  50Hz H
  hdmi_mode=23  288p  50
+
  hdmi_mode=23  288p  50Hz
  hdmi_mode=24  288p  50 H
+
  hdmi_mode=24  288p  50Hz H
  hdmi_mode=25  576i  50 4x
+
  hdmi_mode=25  576i  50Hz 4x
  hdmi_mode=26  576i  50 4x H
+
  hdmi_mode=26  576i  50Hz 4x H
  hdmi_mode=27  288p  50 4x
+
  hdmi_mode=27  288p  50Hz 4x
  hdmi_mode=28  288p  50 4x H
+
  hdmi_mode=28  288p  50Hz 4x H
  hdmi_mode=29  576p  50 2x
+
  hdmi_mode=29  576p  50Hz 2x
  hdmi_mode=30  576p  50 2x H
+
  hdmi_mode=30  576p  50Hz 2x H
  hdmi_mode=31  1080p 50
+
  hdmi_mode=31  1080p 50Hz
  hdmi_mode=32  1080p 24
+
  hdmi_mode=32  1080p 24Hz
  hdmi_mode=33  1080p 25
+
  hdmi_mode=33  1080p 25Hz
  hdmi_mode=34  1080p 30
+
  hdmi_mode=34  1080p 30Hz
  hdmi_mode=35  480p  60 4x
+
  hdmi_mode=35  480p  60Hz 4x
  hdmi_mode=36  480p  60 4xH
+
  hdmi_mode=36  480p  60Hz 4xH
  hdmi_mode=37  576p  50 4x
+
  hdmi_mode=37  576p  50Hz 4x
  hdmi_mode=38  576p  50 4x H
+
  hdmi_mode=38  576p  50Hz 4x H
  hdmi_mode=39  1080i 50 reduced blanking
+
  hdmi_mode=39  1080i 50Hz reduced blanking
  hdmi_mode=40  1080i 100
+
  hdmi_mode=40  1080i 100Hz
  hdmi_mode=41  720p  100
+
  hdmi_mode=41  720p  100Hz
  hdmi_mode=42  576p  100
+
  hdmi_mode=42  576p  100Hz
  hdmi_mode=43  576p  100 H
+
  hdmi_mode=43  576p  100Hz H
  hdmi_mode=44  576i  100
+
  hdmi_mode=44  576i  100Hz
  hdmi_mode=45  576i  100 H
+
  hdmi_mode=45  576i  100Hz H
  hdmi_mode=46  1080i 120
+
  hdmi_mode=46  1080i 120Hz
  hdmi_mode=47  720p  120
+
  hdmi_mode=47  720p  120Hz
  hdmi_mode=48  480p  120
+
  hdmi_mode=48  480p  120Hz
  hdmi_mode=49  480p  120 H
+
  hdmi_mode=49  480p  120Hz H
  hdmi_mode=50  480i  120
+
  hdmi_mode=50  480i  120Hz
  hdmi_mode=51  480i  120 H
+
  hdmi_mode=51  480i  120Hz H
  hdmi_mode=52  576p  200
+
  hdmi_mode=52  576p  200Hz
  hdmi_mode=53  576p  200 H
+
  hdmi_mode=53  576p  200Hz H
  hdmi_mode=54  576i  200
+
  hdmi_mode=54  576i  200Hz
  hdmi_mode=55  576i  200 H
+
  hdmi_mode=55  576i  200Hz H
  hdmi_mode=56  480p  240
+
  hdmi_mode=56  480p  240Hz
  hdmi_mode=57  480p  240 H
+
  hdmi_mode=57  480p  240Hz H
  hdmi_mode=58  480i  240
+
  hdmi_mode=58  480i  240Hz
  hdmi_mode=59  480i  240 H
+
  hdmi_mode=59  480i  240Hz H
  
 
  '''These values are valid if hdmi_group=2 (DMT)'''
 
  '''These values are valid if hdmi_group=2 (DMT)'''
  hdmi_mode=1    640x350  85
+
  hdmi_mode=1    640x350  85Hz
  hdmi_mode=2    640x400  85
+
  hdmi_mode=2    640x400  85Hz
  hdmi_mode=3    720x400  85
+
  hdmi_mode=3    720x400  85Hz
  hdmi_mode=4    640x480  60
+
  hdmi_mode=4    640x480  60Hz
  hdmi_mode=5    640x480  72
+
  hdmi_mode=5    640x480  72Hz
  hdmi_mode=6    640x480  75
+
  hdmi_mode=6    640x480  75Hz
  hdmi_mode=7    640x480  85
+
  hdmi_mode=7    640x480  85Hz
  hdmi_mode=8    800x600  56
+
  hdmi_mode=8    800x600  56Hz
  hdmi_mode=9    800x600  60
+
  hdmi_mode=9    800x600  60Hz
  hdmi_mode=10  800x600  72
+
  hdmi_mode=10  800x600  72Hz
  hdmi_mode=11  800x600  75
+
  hdmi_mode=11  800x600  75Hz
  hdmi_mode=12  800x600  85
+
  hdmi_mode=12  800x600  85Hz
  hdmi_mode=13  800x600  120
+
  hdmi_mode=13  800x600  120Hz
  hdmi_mode=14  848x480  60
+
  hdmi_mode=14  848x480  60Hz
  hdmi_mode=15  1024x768  43 DO NOT USE
+
  hdmi_mode=15  1024x768  43Hz DO NOT USE
  hdmi_mode=16  1024x768  60
+
  hdmi_mode=16  1024x768  60Hz
  hdmi_mode=17  1024x768  70
+
  hdmi_mode=17  1024x768  70Hz
  hdmi_mode=18  1024x768  75
+
  hdmi_mode=18  1024x768  75Hz
  hdmi_mode=19  1024x768  85
+
  hdmi_mode=19  1024x768  85Hz
  hdmi_mode=20  1024x768  120
+
  hdmi_mode=20  1024x768  120Hz
  hdmi_mode=21  1152x864  75
+
  hdmi_mode=21  1152x864  75Hz
  hdmi_mode=22  1280x768     reduced blanking
+
  hdmi_mode=22  1280x768       reduced blanking
  hdmi_mode=23  1280x768  60
+
  hdmi_mode=23  1280x768  60Hz
  hdmi_mode=24  1280x768  75
+
  hdmi_mode=24  1280x768  75Hz
  hdmi_mode=25  1280x768  85
+
  hdmi_mode=25  1280x768  85Hz
  hdmi_mode=26  1280x768  120 reduced blanking
+
  hdmi_mode=26  1280x768  120Hz reduced blanking
  hdmi_mode=27  1280x800     reduced blanking
+
  hdmi_mode=27  1280x800       reduced blanking
  hdmi_mode=28  1280x800  60
+
  hdmi_mode=28  1280x800  60Hz
  hdmi_mode=29  1280x800  75
+
  hdmi_mode=29  1280x800  75Hz
  hdmi_mode=30  1280x800  85
+
  hdmi_mode=30  1280x800  85Hz
  hdmi_mode=31  1280x800  120 reduced blanking
+
  hdmi_mode=31  1280x800  120Hz reduced blanking
  hdmi_mode=32  1280x960  60
+
  hdmi_mode=32  1280x960  60Hz
  hdmi_mode=33  1280x960  85
+
  hdmi_mode=33  1280x960  85Hz
  hdmi_mode=34  1280x960  120 reduced blanking
+
  hdmi_mode=34  1280x960  120Hz reduced blanking
  hdmi_mode=35  1280x1024 60
+
  hdmi_mode=35  1280x1024 60Hz
  hdmi_mode=36  1280x1024 75
+
  hdmi_mode=36  1280x1024 75Hz
  hdmi_mode=37  1280x1024 85
+
  hdmi_mode=37  1280x1024 85Hz
  hdmi_mode=38  1280x1024 120 reduced blanking
+
  hdmi_mode=38  1280x1024 120Hz reduced blanking
  hdmi_mode=39  1360x768  60
+
  hdmi_mode=39  1360x768  60Hz
  hdmi_mode=40  1360x768  120 reduced blanking
+
  hdmi_mode=40  1360x768  120Hz reduced blanking
  hdmi_mode=41  1400x1050     reduced blanking
+
  hdmi_mode=41  1400x1050       reduced blanking
  hdmi_mode=42  1400x1050 60
+
  hdmi_mode=42  1400x1050 60Hz
  hdmi_mode=43  1400x1050 75
+
  hdmi_mode=43  1400x1050 75Hz
  hdmi_mode=44  1400x1050 85
+
  hdmi_mode=44  1400x1050 85Hz
  hdmi_mode=45  1400x1050 120 reduced blanking
+
  hdmi_mode=45  1400x1050 120Hz reduced blanking
  hdmi_mode=46  1440x900     reduced blanking
+
  hdmi_mode=46  1440x900       reduced blanking
  hdmi_mode=47  1440x900  60
+
  hdmi_mode=47  1440x900  60Hz
  hdmi_mode=48  1440x900  75
+
  hdmi_mode=48  1440x900  75Hz
  hdmi_mode=49  1440x900  85
+
  hdmi_mode=49  1440x900  85Hz
  hdmi_mode=50  1440x900  120 reduced blanking
+
  hdmi_mode=50  1440x900  120Hz reduced blanking
  hdmi_mode=51  1600x1200 60
+
  hdmi_mode=51  1600x1200 60Hz
  hdmi_mode=52  1600x1200 65
+
  hdmi_mode=52  1600x1200 65Hz
  hdmi_mode=53  1600x1200 70
+
  hdmi_mode=53  1600x1200 70Hz
  hdmi_mode=54  1600x1200 75
+
  hdmi_mode=54  1600x1200 75Hz
  hdmi_mode=55  1600x1200 85
+
  hdmi_mode=55  1600x1200 85Hz
  hdmi_mode=56  1600x1200 120 reduced blanking
+
  hdmi_mode=56  1600x1200 120Hz reduced blanking
  hdmi_mode=57  1680x1050     reduced blanking
+
  hdmi_mode=57  1680x1050       reduced blanking
  hdmi_mode=58  1680x1050 60
+
  hdmi_mode=58  1680x1050 60Hz
  hdmi_mode=59  1680x1050 75
+
  hdmi_mode=59  1680x1050 75Hz
  hdmi_mode=60  1680x1050 85
+
  hdmi_mode=60  1680x1050 85Hz
  hdmi_mode=61  1680x1050 120 reduced blanking
+
  hdmi_mode=61  1680x1050 120Hz reduced blanking
  hdmi_mode=62  1792x1344 60
+
  hdmi_mode=62  1792x1344 60Hz
  hdmi_mode=63  1792x1344 75
+
  hdmi_mode=63  1792x1344 75Hz
  hdmi_mode=64  1792x1344 120 reduced blanking
+
  hdmi_mode=64  1792x1344 120Hz reduced blanking
  hdmi_mode=65  1856x1392 60
+
  hdmi_mode=65  1856x1392 60Hz
  hdmi_mode=66  1856x1392 75
+
  hdmi_mode=66  1856x1392 75Hz
  hdmi_mode=67  1856x1392 120 reduced blanking
+
  hdmi_mode=67  1856x1392 120Hz reduced blanking
  hdmi_mode=68  1920x1200     reduced blanking
+
  hdmi_mode=68  1920x1200       reduced blanking
  hdmi_mode=69  1920x1200 60
+
  hdmi_mode=69  1920x1200 60Hz
  hdmi_mode=70  1920x1200 75
+
  hdmi_mode=70  1920x1200 75Hz
  hdmi_mode=71  1920x1200 85
+
  hdmi_mode=71  1920x1200 85Hz
  hdmi_mode=72  1920x1200 120 reduced blanking
+
  hdmi_mode=72  1920x1200 120Hz reduced blanking
  hdmi_mode=73  1920x1440 60
+
  hdmi_mode=73  1920x1440 60Hz
  hdmi_mode=74  1920x1440 75
+
  hdmi_mode=74  1920x1440 75Hz
  hdmi_mode=75  1920x1440 120 reduced blanking
+
  hdmi_mode=75  1920x1440 120Hz reduced blanking
  hdmi_mode=76  2560x1600     reduced blanking
+
  hdmi_mode=76  2560x1600       reduced blanking
  hdmi_mode=77  2560x1600 60
+
  hdmi_mode=77  2560x1600 60Hz
  hdmi_mode=78  2560x1600 75
+
  hdmi_mode=78  2560x1600 75Hz
  hdmi_mode=79  2560x1600 85
+
  hdmi_mode=79  2560x1600 85Hz
  hdmi_mode=80  2560x1600 120 reduced blanking
+
  hdmi_mode=80  2560x1600 120Hz reduced blanking
  hdmi_mode=81  1366x768  60
+
  hdmi_mode=81  1366x768  60Hz
  hdmi_mode=82  1080p_60
+
  hdmi_mode=82  1080p    60Hz
  hdmi_mode=83  1600x900     reduced blanking
+
  hdmi_mode=83  1600x900       reduced blanking
  hdmi_mode=84  2048x1152     reduced blanking
+
  hdmi_mode=84  2048x1152       reduced blanking
  hdmi_mode=85  720p_60
+
  hdmi_mode=85  720p      60Hz
  hdmi_mode=86  1366x768     reduced blanking
+
  hdmi_mode=86  1366x768       reduced blanking
  
 
'''overscan_left''' number of pixels to skip on left
 
'''overscan_left''' number of pixels to skip on left

Revision as of 08:52, 20 May 2012


The Raspberry Pi config.txt file is read by the GPU before the ARM core is initialised. It can be used to set various system configuration parameters.

This file is an optional file on the boot partition. It would normally be accessible as /boot/config.txt from Linux.

To edit the configuration file, see the instructions at R-Pi_ConfigurationFile.

File format

The format is "property=value". value is an integer. You may specify only one option per line. Comments may be added by starting a line with the '#' character.

Here is an example file

# Set stdv mode to PAL (as used in Europe)
sdtv_mode=2
# Force the monitor to HDMI mode so that sound will be sent over HDMI cable
hdmi_drive=2
# Set monitor mode to DMT
hdmi_group=2
# Set monitor resolution to 1024x768 XGA 60Hz (HDMI_DMT_XGA_60)
hdmi_mode=0x10
# Make display smaller to stop text spilling off the screen
overscan_left=20
overscan_right=12
overscan_top=10
overscan_bottom=10

Video mode configuration

Video mode options

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 output (default=1)

sdtv_aspect=1  4:3
sdtv_aspect=2  14:9
sdtv_aspect=3  16:9

hdmi_drive chooses between HDMI and DVI modes

 hdmi_drive= 1 Normal DVI mode (No sound)
 hdmi_drive= 2 Normal HDMI mode (Sound will be sent if supported and enabled)

hdmi_group defines the HDMI type (default=1)

hdmi_group=1   CEA
hdmi_group=2   DMT

hdmi_mode defines screen resolution in CEA or DMT format

These values are valid if hdmi_group=1 (CEA)
hdmi_mode=1    VGA
hdmi_mode=2    480p  60Hz
hdmi_mode=3    480p  60Hz  H
hdmi_mode=4    720p  60Hz
hdmi_mode=5    1080i 60Hz
hdmi_mode=6    480i  60Hz
hdmi_mode=7    480i  60Hz  H
hdmi_mode=8    240p  60Hz
hdmi_mode=9    240p  60Hz  H
hdmi_mode=10   480i  60Hz  4x
hdmi_mode=11   480i  60Hz  4x H
hdmi_mode=12   240p  60Hz  4x
hdmi_mode=13   240p  60Hz  4x H
hdmi_mode=14   480p  60Hz  2x
hdmi_mode=15   480p  60Hz  2x H
hdmi_mode=16   1080p 60Hz
hdmi_mode=17   576p  50Hz
hdmi_mode=18   576p  50Hz  H
hdmi_mode=19   720p  50Hz
hdmi_mode=20   1080i 50Hz
hdmi_mode=21   576i  50Hz
hdmi_mode=22   576i  50Hz  H
hdmi_mode=23   288p  50Hz
hdmi_mode=24   288p  50Hz  H
hdmi_mode=25   576i  50Hz  4x
hdmi_mode=26   576i  50Hz  4x H
hdmi_mode=27   288p  50Hz  4x
hdmi_mode=28   288p  50Hz  4x H
hdmi_mode=29   576p  50Hz  2x
hdmi_mode=30   576p  50Hz  2x H
hdmi_mode=31   1080p 50Hz
hdmi_mode=32   1080p 24Hz
hdmi_mode=33   1080p 25Hz
hdmi_mode=34   1080p 30Hz
hdmi_mode=35   480p  60Hz  4x
hdmi_mode=36   480p  60Hz  4xH
hdmi_mode=37   576p  50Hz  4x
hdmi_mode=38   576p  50Hz  4x H
hdmi_mode=39   1080i 50Hz  reduced blanking
hdmi_mode=40   1080i 100Hz
hdmi_mode=41   720p  100Hz
hdmi_mode=42   576p  100Hz
hdmi_mode=43   576p  100Hz H
hdmi_mode=44   576i  100Hz
hdmi_mode=45   576i  100Hz H
hdmi_mode=46   1080i 120Hz
hdmi_mode=47   720p  120Hz
hdmi_mode=48   480p  120Hz
hdmi_mode=49   480p  120Hz H
hdmi_mode=50   480i  120Hz
hdmi_mode=51   480i  120Hz H
hdmi_mode=52   576p  200Hz
hdmi_mode=53   576p  200Hz H
hdmi_mode=54   576i  200Hz
hdmi_mode=55   576i  200Hz H
hdmi_mode=56   480p  240Hz
hdmi_mode=57   480p  240Hz H
hdmi_mode=58   480i  240Hz
hdmi_mode=59   480i  240Hz H
These values are valid if hdmi_group=2 (DMT)
hdmi_mode=1    640x350   85Hz
hdmi_mode=2    640x400   85Hz
hdmi_mode=3    720x400   85Hz
hdmi_mode=4    640x480   60Hz
hdmi_mode=5    640x480   72Hz
hdmi_mode=6    640x480   75Hz
hdmi_mode=7    640x480   85Hz
hdmi_mode=8    800x600   56Hz
hdmi_mode=9    800x600   60Hz
hdmi_mode=10   800x600   72Hz
hdmi_mode=11   800x600   75Hz
hdmi_mode=12   800x600   85Hz
hdmi_mode=13   800x600   120Hz
hdmi_mode=14   848x480   60Hz
hdmi_mode=15   1024x768  43Hz  DO NOT USE
hdmi_mode=16   1024x768  60Hz
hdmi_mode=17   1024x768  70Hz
hdmi_mode=18   1024x768  75Hz
hdmi_mode=19   1024x768  85Hz
hdmi_mode=20   1024x768  120Hz
hdmi_mode=21   1152x864  75Hz
hdmi_mode=22   1280x768        reduced blanking
hdmi_mode=23   1280x768  60Hz
hdmi_mode=24   1280x768  75Hz
hdmi_mode=25   1280x768  85Hz
hdmi_mode=26   1280x768  120Hz reduced blanking
hdmi_mode=27   1280x800        reduced blanking
hdmi_mode=28   1280x800  60Hz
hdmi_mode=29   1280x800  75Hz
hdmi_mode=30   1280x800  85Hz
hdmi_mode=31   1280x800  120Hz reduced blanking
hdmi_mode=32   1280x960  60Hz
hdmi_mode=33   1280x960  85Hz
hdmi_mode=34   1280x960  120Hz reduced blanking
hdmi_mode=35   1280x1024 60Hz
hdmi_mode=36   1280x1024 75Hz
hdmi_mode=37   1280x1024 85Hz
hdmi_mode=38   1280x1024 120Hz reduced blanking
hdmi_mode=39   1360x768  60Hz
hdmi_mode=40   1360x768  120Hz reduced blanking
hdmi_mode=41   1400x1050       reduced blanking
hdmi_mode=42   1400x1050 60Hz
hdmi_mode=43   1400x1050 75Hz
hdmi_mode=44   1400x1050 85Hz
hdmi_mode=45   1400x1050 120Hz reduced blanking
hdmi_mode=46   1440x900        reduced blanking
hdmi_mode=47   1440x900  60Hz
hdmi_mode=48   1440x900  75Hz
hdmi_mode=49   1440x900  85Hz
hdmi_mode=50   1440x900  120Hz reduced blanking
hdmi_mode=51   1600x1200 60Hz
hdmi_mode=52   1600x1200 65Hz
hdmi_mode=53   1600x1200 70Hz
hdmi_mode=54   1600x1200 75Hz
hdmi_mode=55   1600x1200 85Hz
hdmi_mode=56   1600x1200 120Hz reduced blanking
hdmi_mode=57   1680x1050       reduced blanking
hdmi_mode=58   1680x1050 60Hz
hdmi_mode=59   1680x1050 75Hz
hdmi_mode=60   1680x1050 85Hz
hdmi_mode=61   1680x1050 120Hz reduced blanking
hdmi_mode=62   1792x1344 60Hz
hdmi_mode=63   1792x1344 75Hz
hdmi_mode=64   1792x1344 120Hz reduced blanking
hdmi_mode=65   1856x1392 60Hz
hdmi_mode=66   1856x1392 75Hz
hdmi_mode=67   1856x1392 120Hz reduced blanking
hdmi_mode=68   1920x1200       reduced blanking
hdmi_mode=69   1920x1200 60Hz
hdmi_mode=70   1920x1200 75Hz
hdmi_mode=71   1920x1200 85Hz
hdmi_mode=72   1920x1200 120Hz reduced blanking
hdmi_mode=73   1920x1440 60Hz
hdmi_mode=74   1920x1440 75Hz
hdmi_mode=75   1920x1440 120Hz reduced blanking
hdmi_mode=76   2560x1600       reduced blanking
hdmi_mode=77   2560x1600 60Hz
hdmi_mode=78   2560x1600 75Hz
hdmi_mode=79   2560x1600 85Hz
hdmi_mode=80   2560x1600 120Hz reduced blanking
hdmi_mode=81   1366x768  60Hz
hdmi_mode=82   1080p     60Hz
hdmi_mode=83   1600x900        reduced blanking
hdmi_mode=84   2048x1152       reduced blanking
hdmi_mode=85   720p      60Hz
hdmi_mode=86   1366x768        reduced blanking

overscan_left number of pixels to skip on left

overscan_right number of pixels to skip on right

overscan_top number of pixels to skip on top

overscan_bottom number of pixels to skip on bottom

framebuffer_width console framebuffer width in pixels. Default matches display.

framebuffer_height console framebuffer height in pixels. Default matches display.

test_mode enable test sound/image during boot for manufacturing test.

enable_l2cache enable arm access to GPU's L2 cache. Needs corresponding L2 enabled kernel. Default is 0.

disable_overscan set to 1 to disable overscan.

hdmi_force_hot_plug force your TV to allow hot plugging of RPi.

Which values are valid for my monitor?

Your HDMI monitor may support only a limited set of formats. To find out which formats are supported, use the following method.

  • Set the output format to VGA 60Hz (hdmi_group=1 hdmi_mode=1) and boot up the Raspberry Pi
  • Enter the following command to give a list of CEA supported modes
/opt/vc/bin/tvservice –m CEA
  • Enter the following command to give a list of DMT supported modes
/opt/vc/bin/tvservice –m DMT
  • Enter the following command to show your current state
/opt/vc/bin/tvservice -s

Overclocking configuration

WARNING: Setting any of the parameters which over volt your Raspberry Pi will set a permanent bit within the SOC and your warranty is void. So If you care about the warranty do not adjust voltage.

Also at your own risk you can try overscan settings from our wiki. These were posted on the forum and are not confimed to work.

Overclocking options

Option Description
arm_freq frequency of ARM in MHz. Default 700.
gpu_freq Sets core_freq, h264_freq, isp_freq, v3d_freq together.
core_freq frequency of GPU processor core in MHz. 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.
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 0.25V steps. Default 0 (1.2V) [1]
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 0.25V steps. Default 0 (1.2V) [1]
over_voltage_sdram_i SDRAM I/O voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.25V steps. Default 0 (1.2V)[1]
over_voltage_sdram_p SDRAM phy voltage adjust. [-16,8] equates to [0.8V,1.4V] with 0.25V steps. Default 0 (1.2V)[1]

Tested values

The following table shows some successfull attempts of overclocking. These settings may not work on every device and can shorten the life of the Broadcom SoC. Warranty will be voided if overvoltage is used.

arm_freq gpu_freq core_freq h264_freq isp_freq v3d_freq sdram_freq over_voltage over_voltage_sdram
900 350
1000 6

Notes

  1. 1.0 1.1 1.2 1.3 What this means is that you can specify -16 and expect about 0.8V as the GPU/core voltage. This is 0.4V below the normal value of 1.2. If you specify 16, you'd get 0.4V ABOVE the normal value of 1.2V, or 1.6V. The fact that someone carefully specified "8" and "1.4V" as the upper limit in the examples leads me to think that it is likely to shorten the life of your raspberry pi significantly if you would specify values above "8". So: don't specify values above zero, but if you do, don't go above 8.