Gerald, I am having the same problems as described above.
The one difference I appear to be getting is that during the initial boot, I get the BeagleBone logo appear in the top left of the screen. This also changes size depending on what resolution I set in uEnv.txt After this image disappears and a little more time has passed, I get "No Signal" on my 32" TV or "Power Saving Mode HDMI" on my LG Flatron L246WH 24" Monitor. This suggests to me that the HDMI setup is working but something breaks it during the boot process. On Monday, September 30, 2013 3:01:37 PM UTC+1, Gerald wrote: > > 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 <hone...@gmail.com<javascript:> > > 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...@googlegroups.com <javascript:>. >> 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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