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TI Home » TI E2E Community » Support Forums » Embedded Software » Android » Android forum » BeagleBone DVI-D cape none syncing display
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BeagleBone DVI-D cape none syncing display

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Frank Dols
Posted by Frank Dols
on May 02 2012 08:01 AM
Prodigy20 points

Hi,

I received my DVI-D cape (s/n: 1412DVID375) as goes with my Beaglebone (Rev A5. S/N: 0812BB000176) last week (purchased through Farnell).

Next I moved to your latest Android release (ICS 4.0.3 with devkit 3.0.1) as available from: http://software-dl.ti.com/dsps/dsps_public_sw/sdo_tii/TI_Android_DevKit/TI_Android_ICS_4_0_3_DevKit_3_0_1/index_FDS.html

To get me quickly up (just to see if all is OK) I downloaded the pre-built Android images for the above configuration (which tells me that DVI-D is supported on Beaglebone.

Booting the device goes OK, and I also see the DVI init messages coming by (see below):

My problem / issue as of now is, I tried with various LCD monitors (also different HDMI-DVI cables), but none of them seems to be working fine. It is the fact that the "Android" boot animation screen is displayed in a flickering way with strike through's in text  (~1sec "ANDROID" next few seconds black screen). In the end, I get a black screens where only one monitor is capable to display some part of the Android desktop (initial screen) and even then, only in a flickering way. More in detail, this one monitor gives me a screen which is only now and then visible (tens of seconds black screen, next 1-3 seconds I see the Android desktop :-(

An other related observation I did, when I do not connect any (mouse / keyboard) USB device, I even do not get any Android screen ad all (only the "Android" boot animation screen popping now and then up).

When testing with the pre-built Linux kernel only (so not Android), I get the blue Angstrom login screen (http://beagleboardtoys.com/wiki/index.php?title=BeagleBone_DVI-D) etc as it should be via the DVI interface !!

Please, advice. I was wondering, how to change the video mode, or what else could I do?

Btw., I'm located in the Netherlands (50HZ).

Regards, Frank.

127|root@android:/ # dmesg
<5>[    0.000000] Linux version 3.2.0-gb02ab39 (x0029463@psplinux052) (gcc version 4.4.3 (GCC) ) #1 Wed Apr 11 14:03:37 IST 2012
<4>[    0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
<4>[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
<4>[    0.000000] Machine: am335xevm
<4>[    0.000000] Memory policy: ECC disabled, Data cache writeback
<7>[    0.000000] On node 0 totalpages: 65536
<7>[    0.000000] free_area_init_node: node 0, pgdat c06f36ec, node_mem_map c0824000
<7>[    0.000000]   Normal zone: 512 pages used for memmap
<7>[    0.000000]   Normal zone: 0 pages reserved
<7>[    0.000000]   Normal zone: 65024 pages, LIFO batch:15
<6>[    0.000000] AM335X ES1.0 (sgx neon )
<7>[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
<7>[    0.000000] pcpu-alloc: [0] 0
<4>[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 65024
<5>[    0.000000] Kernel command line: console=ttyO0,115200n8 androidboot.console=ttyO0 mem=256M root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait init=/init ip=off
<6>[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
...
<4>[    0.907501] i2c-core: driver [tsl2550] using legacy suspend method
<4>[    0.913970] i2c-core: driver [tsl2550] using legacy resume method
<6>[    0.920379] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
<6>[    1.001220] No daughter card found on AM335x EVM
<6>[    1.006072] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
<6>[    1.021270] Board name: A335BONE
<6>[    1.024658] Board version: 00A5
<6>[    1.027923] The board is a AM335x Beaglebone.
<6>[    1.033111] tps65217 1-0024: TPS65217 ID 0x7 version 1.0
<6>[    1.040466] print_constraints: DCDC1: 900 <--> 1800 mV at 1800 mV
<6>[    1.048767] print_constraints: DCDC2: 900 <--> 3300 mV at 1275 mV
<6>[    1.057098] print_constraints: DCDC3: 900 <--> 1500 mV at 1100 mV
<6>[    1.065307] print_constraints: LDO1: 1000 <--> 3300 mV at 1800 mV
<6>[    1.073608] print_constraints: LDO2: 900 <--> 3300 mV at 3300 mV
<6>[    1.081787] print_constraints: LDO3: 1800 <--> 3300 mV at 3300 mV
<6>[    1.090026] print_constraints: LDO4: 1800 <--> 3300 mV at 3300 mV
<4>[    1.096893]  omap_hsmmc.0: alias fck already exists
<4>[    1.102233]  omap_i2c.3: alias fck already exists
<6>[    1.121307] omap_i2c omap_i2c.3: bus 3 rev2.4.0 at 100 kHz
<6>[    1.127624] at24 3-0054: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
<6>[    1.134918] IN : bone_setup_daughter_board
<6>[    1.139373] usb 1-1: new high-speed USB device number 2 using musb-hdrc
<6>[    1.154388] Detected a daughter card on BeagleBone..
<6>[    1.159393] IN : dvi_init
<4>[    1.162780]  da8xx_lcdc.0: alias fck already exists
<6>[    1.168090] da8xx_lcdc da8xx_lcdc.0: GLCD: Found 1024x768@60 panel
<6>[    1.186553] Setup DVI display
<3>[    1.190704] mtdoops: mtd device (mtddev=name/number) must be supplied
<6>[    1.197631] omap2-nand driver initializing
<6>[    1.201995] OneNAND driver initializing
<6>[    1.206481] CAN device driver interface
...

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  • Satish Patel
    Posted by Satish Patel
    on May 07 2012 23:55 PM
    Expert4350 points

    Hi Frank,

    1. Could you validate display with VNC viewer ? This is to eliminate problem with android

    http://processors.wiki.ti.com/index.php/TI-Android-ICS-4.0.3-DevKit-3.0.1_UserGuide#Display_Options

    2. Also send us logcat for further analysis

    BR,

    satish

    Kindly click the verify answer button on this post if it answer your question.

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  • Frank Dols
    Posted by Frank Dols
    on May 08 2012 08:18 AM
    Prodigy20 points

    Hello Satish,

    Now it’s getting interesting. When launching VNC server on the Bone, I also get now and then (more often and more reproducible) the Android desktop to see on my DVI connected monitor (see included pictures = Beaglebone-setup.jpg + visible-desktop.jpg + none-visible-desktop.jpg Note, the Philips monitor / right hand is connected to the Beaglebone via DVI, where the left hand / Dell monitor is my TightVNC viewer). And when I see something :-) it looks bad (these lines in the image = flickering-lines.jpg) :-(

    Regarding the logcat, see attached the full log’s I did (logcat + dumpstate, etc).

    Regards, Frank.

    3806.DVI-issue-logcat-001.log

    0257.DVI-issue-001.log

    3666.DVI-issue-bugreport-001.log

    7558.DVI-issue-dmesg-001.log

    7608.DVI-issue-dumpstate-001.log

    8154.DVI-issue-dumpstate-002.log

    4370.DVI-issue-dumpsys-001.log

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