Jälleen Linux aiheinen kirjoitelma :)

Tän blogin tarkoitus oli alkujaan että julkaisen vain Linux aiheita, mutta tuule tuulevat ja maailma muuttuu. Tällä hetkelläkin käännän lähdekoodista Raspberry Pi:lle ohjelmaa, eli siis Linuxille. No tämä oli tällainen aasinsilta :D. Eli Mun työ piste koostuu 4:stä näytöstä Facebookissa osa on jo nähneetkin viritelmän. Mutta siis 24"  näyttö oli tarkoitus valjastaa myös Raspberry Pi:lle HDMI kaapelia pitkin, sillä HDMI+VGA ei toiminut ja näytössäni on HDMI portti myös.
Tämä tarkoitti käytönnössä sitä että ensin kokeilemalla kokeilin miten toimii, no se toimi mutta resoluutio väärä eli ei 1920x1200. SD-kortilla on boot osio jossa on tiedosto nimeltään: config.
Etsi rivi jossa on:
# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1
Ja ota # merkit pois edestä.
Omalla kohdallani hdmi_group=2 ja hdmi_mode=68.
Komennot jolla saat oman näytön oikeat asetukset ovat seuraavat:
/opt/vc/bin/tvservice -d edid.dat

Tämän jälkeen parseroidaan tiedot komennolla: /opt/vc/bin/edidparser edid.dat.

Omalla näytöllä Benq 24" G2400W.

Siis näyttää tältä: (oleellisin lopussa lihavoituna).

Enabling fuzzy format match...

Parsing edid.dat...

HDMI:EDID version 1.3, 1 extensions, screen size 52x32 cm

HDMI:EDID features - videodef 0x80 !standby !suspend active off; colour encoding:RGB444|YCbCr444|YCbCr422; sRGB is default colourspace; preferred format is native; does not support GTF

HDMI:EDID found monitor S/N descriptor tag 0xff

HDMI:EDID found monitor range descriptor tag 0xfd

HDMI:EDID monitor range offsets: V min=0, V max=0, H min=0, H max=0

HDMI:EDID monitor range: vertical is 50-85 Hz, horizontal is 31-94 kHz, max pixel clock is 170 MHz

HDMI:EDID monitor range does not support GTF

HDMI:EDID found monitor name descriptor tag 0xfc

HDMI:EDID monitor name is BenQ_G2400W

HDMI:EDID found preferred DMT detail timing format: 1920x1200p @ 60 Hz (68)

HDMI:EDID established timing I/II bytes are A5 6B 80

HDMI:EDID found DMT format: code 4, 640x480p @ 60 Hz in established timing I/II

HDMI:EDID found DMT format: code 6, 640x480p @ 75 Hz in established timing I/II

HDMI:EDID found DMT format: code 9, 800x600p @ 60 Hz in established timing I/II

HDMI:EDID found DMT format: code 11, 800x600p @ 75 Hz in established timing I/II

HDMI:EDID found DMT format: code 16, 1024x768p @ 60 Hz in established timing I/II

HDMI:EDID found DMT format: code 18, 1024x768p @ 75 Hz in established timing I/II

HDMI:EDID found DMT format: code 36, 1280x1024p @ 75 Hz in established timing I/II

HDMI:EDID standard timings block x 8: 0x7100 8100 9500 8180 B300 A940 D100 0101 

HDMI:EDID unknown standard timing 1152x720 @ 60 Hz aspect ratio (16:10)

HDMI:EDID found DMT format: code 28, 1280x800p @ 60 Hz (16:10) in standard timing 1

HDMI:EDID found DMT format: code 47, 1440x900p @ 60 Hz (16:10) in standard timing 2

HDMI:EDID found DMT format: code 35, 1280x1024p @ 60 Hz (5:4) in standard timing 3

HDMI:EDID found DMT format: code 58, 1680x1050p @ 60 Hz (16:10) in standard timing 4

HDMI:EDID found DMT format: code 51, 1600x1200p @ 60 Hz (4:3) in standard timing 5

HDMI:EDID found DMT format: code 69, 1920x1200p @ 60 Hz (16:10) in standard timing 6

HDMI:EDID parsing v3 CEA extension 0

HDMI:EDID monitor support - underscan IT formats:yes, basic audio:yes, yuv444:yes, yuv422:yes, #native DTD:1

HDMI:EDID found CEA detail timing format: 1280x720p @ 60 Hz (4)

HDMI:EDID found CEA detail timing format: 1920x1080i @ 60 Hz (5)

HDMI:EDID found CEA detail timing format: 720x480p @ 60 Hz (2)

HDMI:EDID found CEA detail timing format: 1920x1080p @ 60 Hz (16)

HDMI:EDID found CEA detail timing format: 640x480p @ 60 Hz (1)

HDMI:EDID found CEA format: code 4, 1280x720p @ 60Hz 

HDMI:EDID found CEA format: code 16, 1920x1080p @ 60Hz (native)

HDMI:EDID found CEA format: code 3, 720x480p @ 60Hz 

HDMI:EDID found CEA format: code 1, 640x480p @ 60Hz 

HDMI:EDID found CEA format: code 5, 1920x1080i @ 60Hz (native)

HDMI:EDID found CEA format: code 7, 1440x480i @ 60Hz 

HDMI:EDID found HDMI VSDB length 6

HDMI:EDID HDMI VSDB has physical address 1.0.0.0

HDMI:EDID HDMI VSDB supports AI:no, dual link DVI:no

HDMI:EDID HDMI VSDB deep colour support - 48-bit:no 36-bit:no 30-bit:no DC_yuv444:no

HDMI:EDID HDMI VSDB has no latency information

HDMI:EDID found audio format 2 channels PCM, sample rate: 32|44|48 kHz, sample size: 16|20|24 bits

HDMI:EDID filtering formats with pixel clock > 162 MHz or h. blanking > 1023

HDMI:EDID best score mode initialised to DMT (4) 640x480p @ 60 Hz with pixel clock 25 MHz (score 0)

HDMI:EDID best score mode is now CEA (1) 640x480p @ 60 Hz with pixel clock 25 MHz (score 2543432)

HDMI:EDID best score mode is now CEA (2) 720x480p @ 60 Hz with pixel clock 27 MHz (score 3545736)

HDMI:EDID CEA mode (3) 720x480p @ 60 Hz with pixel clock 27 MHz has a score of 45736

HDMI:EDID best score mode is now CEA (4) 1280x720p @ 60 Hz with pixel clock 74 MHz (score 4580296)

HDMI:EDID DMT mode (4) 640x480p @ 60 Hz with pixel clock 25 MHz has a score of 36864

HDMI:EDID CEA mode (5) 1920x1080i @ 60 Hz with pixel clock 74 MHz has a score of 4211624

HDMI:EDID DMT mode (6) 640x480p @ 75 Hz with pixel clock 31 MHz has a score of 46080

HDMI:EDID CEA mode (7) 1440x480i @ 60 Hz with pixel clock 27 MHz has a score of 35368

HDMI:EDID DMT mode (9) 800x600p @ 60 Hz with pixel clock 40 MHz has a score of 57600

HDMI:EDID DMT mode (11) 800x600p @ 75 Hz with pixel clock 49 MHz has a score of 72000

HDMI:EDID CEA mode (16) 1920x1080p @ 60 Hz with pixel clock 148 MHz has a score of 3211624

HDMI:EDID DMT mode (16) 1024x768p @ 60 Hz with pixel clock 65 MHz has a score of 94370

HDMI:EDID DMT mode (18) 1024x768p @ 75 Hz with pixel clock 78 MHz has a score of 117964

HDMI:EDID DMT mode (28) 1280x800p @ 60 Hz with pixel clock 83 MHz has a score of 147880

HDMI:EDID DMT mode (35) 1280x1024p @ 60 Hz with pixel clock 108 MHz has a score of 182286

HDMI:EDID DMT mode (36) 1280x1024p @ 75 Hz with pixel clock 135 MHz has a score of 196608

HDMI:EDID DMT mode (47) 1440x900p @ 60 Hz with pixel clock 106 MHz has a score of 180520

HDMI:EDID DMT mode (51) 1600x1200p @ 60 Hz with pixel clock 162 MHz has a score of 255400

HDMI:EDID DMT mode (58) 1680x1050p @ 60 Hz with pixel clock 146 MHz has a score of 236680

HDMI:EDID best score mode is now DMT (68) 1920x1200p @ 60 Hz with pixel clock 154 MHz (score 5414720)

HDMI:EDID filtering out DMT format: 1920x1200p @ 60 Hz (69) with pixel clock 193 MHz and hfp:136 hs:200 hbp:336

HDMI:EDID preferred mode remained as DMT (68) 1920x1200p @ 60 Hz with pixel clock 154 MHz

HDMI:EDID has HDMI support and audio support

edid_parser exited with code 0

DMT tarkoittaa juuri tätä hdmi_group=2

Ja suluissa olevaan kohtaan hdmi_mode=68

Tiedostot löytyy täältä (siellä on mutakin).

Lisää yksityiskohtaista tietoa löytyy osoitteesta: http://elinux.org/RPiconfig

Mukavia säätämis hetkiä....