OK. I would look at the cable. We have had several instances of people with bad HDMI cables.
Gerald On Mon, Sep 30, 2013 at 8:57 AM, Chien-Yu Chen <honer...@gmail.com> wrote: > I've updated BBB using the newest firmware, > BBB-eMMC-flasher-2013.09.15.img. > Still have the same problem. > > On Thursday, September 26, 2013 11:16:26 PM UTC+8, Chien-Yu Chen wrote: >> >> I met similar issue as well. My monitor is ASUS LS221H which can >> correctly display outputted from my mobile phone Xperia Neo V via HDMI. >> From here, we can confirm the monitor and the cable both function well. >> After powering up, sometimes I could see the logo from BeagleBone Black. >> Then, what I could see is just no signal reported from the monitor. >> >> I referenced the page, http://circuitco.com/**support/index.php?title=** >> BeagleBoneBlack_HDMI<http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI>, >> and tried something described in the page via terminal >> https://192.168.7.2/ >> Followings are some information of my board. >> >> *root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1# xrandr --verbose >> >> * >> Screen 0: minimum 320 x 200, current 1280 x 720, maximum 2048 x 2048 >> >> >> HDMI-0 connected 1280x720+0+0 (0x42) normal (normal left inverted right x >> axis y axis) 474mm x 296mm >> >> Identifier: 0x40 >> >> >> Timestamp: 1523547016 >> Subpixel: unknown >> Gamma: 1.0:1.0:1.0 >> Brightness: 1.0 >> Clones: >> CRTC: 0 >> CRTCs: 0 >> Transform: 1.000000 0.000000 0.000000 >> 0.000000 1.000000 0.000000 >> 0.000000 0.000000 1.000000 >> filter: >> EDID: >> **00ffffffffffff000469f122010101**01 >> **20130103802f1e782e78f5a655489b**26 >> **125054bfef80b30081809500950f90**40 >> **714f0101010121399030621a274068**b0 >> **3600da281100001c000000ff003938**4c >> **4d56443030343433360a000000fd00**38 >> **4b1f5111000a202020202020000000**fc >> **00415355532d4c5332323148ffff01**ff >> **02031e764b909f8594849303120107**16 >> **230907078301000065030c00000002**3a >> **801871382d40582c9600da28110000**18 >> **023a80d072382d40102c4580da2811**00 >> **001e011d8018711c1620582c2500da**28 >> **1100009e011d80d0721c1620102c25**80 >> **da281100009e011d00bc52d01e20b8**28 >> **5540da281100001e00000000000000**dd >> 1280x720 (0x41) 74.2MHz +HSync +VSync >> h: width 1280 start 1720 end 1760 total 1980 skew 0 clock >> 37.5KHz >> v: height 720 start 725 end 730 total 750 clock >> 50.0Hz >> 1280x720 (0x42) 74.2MHz +HSync +VSync *current >> h: width 1280 start 1390 end 1430 total 1650 skew 0 clock >> 45.0KHz >> v: height 720 start 725 end 730 total 750 clock >> 60.0Hz >> 720x576 (0x43) 27.0MHz -HSync -VSync >> h: width 720 start 732 end 796 total 864 skew 0 clock >> 31.2KHz >> v: height 576 start 581 end 586 total 625 clock >> 50.0Hz >> 720x480 (0x44) 27.0MHz -HSync -VSync >> h: width 720 start 736 end 798 total 858 skew 0 clock >> 31.5KHz >> v: height 480 start 489 end 495 total 525 clock >> 59.9Hz >> 640x480 (0x45) 25.2MHz -HSync -VSync >> h: width 640 start 656 end 752 total 800 skew 0 clock >> 31.5KHz >> v: height 480 start 490 end 492 total 525 clock >> 59.9Hz >> >> *root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1# parse-edid edid* >> parse-edid: parse-edid version 2.0.0 >> parse-edid: EDID checksum passed. >> >> >> >> # EDID version 1 revision 3 >> Section "Monitor" >> # Block type: 2:0 3:ff >> # Block type: 2:0 3:fd >> # Block type: 2:0 3:fc >> Identifier "ASUS-LS221Hÿÿ" >> VendorName "ACI" >> ModelName "ASUS-LS221Hÿÿ" >> # Block type: 2:0 3:ff >> # Block type: 2:0 3:fd >> HorizSync 31-81 >> VertRefresh 56-75 >> # Max dot clock (video bandwidth) 170 MHz >> # Block type: 2:0 3:fc >> # DPMS capabilities: Active off:yes Suspend:no Standby:no >> >> >> >> Mode "1680x1050" # vfreq 59.954Hz, hfreq 65.290kHz >> DotClock 146.250000 >> HTimings 1680 1784 1960 2240 >> VTimings 1050 1053 1059 1089 >> Flags "+HSync" "-VSync" >> EndMode >> # Block type: 2:0 3:ff >> # Block type: 2:0 3:fd >> # Block type: 2:0 3:fc >> EndSection >> >> *ID.txt* >> Cloud9 GNOME Image 2013.06.20 >> >> *root@beaglebone:~# cat /proc/cmdline * >> console=ttyO0,115200n8 video=HDMI-A-1::640x480@60 root=/dev/mmcblk0p2 ro >> rootfstype=ext4 rootwait >> >> Finally, the three steps below work like a charm >> >> *root@beaglebone:~# export XAUTHORITY=`ls /var/run/gdm/auth-for-root-*/ >> database` * >> *root@beaglebone:~# export DISPLAY=:0.0 * >> *root@beaglebone:~# xrandr --output HDMI-0 --mode 1280x720 --rate 60* >> >> *root@beaglebone:/sys/class/drm/card0/card0-HDMI-A-1# fbset* >> >> >> >> mode "1280x720-0" >> # D: 0.000 MHz, H: 0.000 kHz, V: 0.000 Hz >> geometry 1280 720 1280 720 16 >> timings 0 0 0 0 0 0 0 >> accel true >> rgba 5/11,6/5,5/0,0/0 >> endmode >> >> >> After these, I do see the output on my monitor. >> >> But anyone can tell me, if I tried >> optargs=video=HDMI-A-1:**1280x720@60 in uEnv.txt >> >> The result is still no signal? >> >> Thanks >> honercek >> >> >> >> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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