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, 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: > 00ffffffffffff000469f12201010101 > 20130103802f1e782e78f5a655489b26 > 125054bfef80b30081809500950f9040 > 714f0101010121399030621a274068b0 > 3600da281100001c000000ff0039384c > 4d56443030343433360a000000fd0038 > 4b1f5111000a202020202020000000fc > 00415355532d4c5332323148ffff01ff > 02031e764b909f859484930312010716 > 230907078301000065030c000000023a > 801871382d40582c9600da2811000018 > 023a80d072382d40102c4580da281100 > 001e011d8018711c1620582c2500da28 > 1100009e011d80d0721c1620102c2580 > da281100009e011d00bc52d01e20b828 > 5540da281100001e00000000000000dd > 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.
