dm385 hdmi 无输出

jin zhu

Ti的专家们好，我用dm385+ar0331 ipnc3.5,设备拿到后用hdmi转vga接头接显示器，显示器上没有图像显示，转接头测试过没有问题，我想问是转接头不支持1080p的分辨率还是hdmi本身就没有输出？我按照hdmiuserguide上的操作cat /sys/devices/platform/vpss/display0/edid 输出：

I2C No Ack

VPSS_DCTRL: Failed to get EDID info 请问这是哪里的问题？

10 年多前

0 Chris Meng 10 年多前

TI__Guru**** 155073 points

你好，

请问你运行的是full feature的demo么？如果是，默认有HDMI输出的。

你是否有HDMI显示器可以先看看HDMI输出是否正常？

0 jin zhu 10 年多前回复 Chris Meng

Intellectual 660 points

恩，我已经验证过了，hdmi显示器上确实可以，可能是显示器或者转接头不支持这么高的分辨率，谢谢你@Chris Meng 回答了我很多的问题。

0 jie yang 6 年多前

Prodigy 110 points

你好！我也遇到与你同样的问题，请问你是怎样解决的哇，我板子上是Micro-HDMI，我买了一个Micro-HDMI转VGA的转接头，然后输出到显示器，可是显示器没有反应。相关打印信息如下，谢谢！
[m3vpss ] 946: SYSTEM : FREE SPACE : System Heap = 1740984 B, Mbx = 10240 msgs)
[m3vpss ] 946: SYSTEM : FREE SPACE : SR0 Heap = 15372416 B (14 MB)
[m3vpss ] 946: SYSTEM : FREE SPACE : Frame Buffer = 105790336 B (100 MB)
[m3vpss ] 947: SYSTEM : FREE SPACE : Bitstream Buffer = 61865856 B (58 MB)
[m3vpss ] 947: SYSTEM : FREE SPACE : Tiler Buffer = 128 B (0 MB) - TILER OFF
[m3vpss ] 1077: SYSTEM : Initializing Links ... DONE !!!
[m3vpss ] Received character 't'
[c6xdsp ] Remote Debug Shared Memory @ 0xbff00000
[m3video] Remote Debug Shared Memory @ 0xbff05020
[m3vpss ] Remote Debug Shared Memory @ 0xbff0a040
[m3video] Received character 't'
rmmod: ERROR: Module osa_kermod is not currently loaded
[ 70.136222] DMA: Module install successful, device major num = 243
[ 70.142598] DRV: Module install successful
[ 70.146716] DRV: Module built on May 9 2017 16:47:43
[ 70.244154]
[ 70.244154] soc_is_dm38x
[ 70.317043] HDMI W1 rev 4.0
[ 70.319896] HDMI CEC Spec version 1.2
[ 70.700166] I2C No Ack

[ 70.702665] HDMI failed to read E-EDID