Hello,
I want to use Armbian on a Cubietruck with an Onyx Boox Max 2 ebook reader (HDMI port) as display. I tested Armbian Stretch mainline kernel 4.14.y and Armbian Xenial desktop legacy kernel 3.4.y.
But with both systems I get a black screen. I use the serial console to access the cubietruck.
When I plug in the HDMI cable I get following info on Armbian Xenial desktop legacy kernel 3.4.y:
<6>EDID version: 1.3
<6>PCLK=125000000 X 2104 2244 2284 2384 Y 1560 1565 1570 1590 fr 32 NP
<6>Using above mode as preferred EDID mode
<6>PCLK=125000000 X 2104 2244 2284 2384 Y 1560 1565 1570 1590 fr 32 NP
<4>Unimplemented SVD code 50
<4>Unimplemented SVD code 50
<4>Unimplemented SVD code 50
<4>Unimplemented SVD code 50
<4>disp_clk: Could not find a matching pll-freq for 53900000 pclk
<4>disp_clk: Could not find a matching pll-freq for 53900000 pclk
<4>disp_clk: Could not find a matching pll-freq for 108100000 pclk
<6>Parse_VideoData_Block: VIC 50 support
<6>Parse_VideoData_Block: VIC 50 support
<6>Parse_VideoData_Block: VIC 50 support
<6>Parse_VideoData_Block: VIC 50 support
<6>Parse_VideoData_Block: VIC 50 support
<6>Parse_VideoData_Block: VIC 50 support
<6>Parse_VideoData_Block: VIC 50 support
<6>Parse_AudioData_Block: max channel=2
<6>Parse_AudioData_Block: SampleRate code=7
<6>Parse_AudioData_Block: WordLen code=1
<6>Find HDMI Vendor Specific DataBlock
<6>PCLK=125000000 X 2104 2244 2284 2384 Y 1560 1565 1570 1590 fr 32 NP
<6>PCLK=125000000 X 2104 2244 2284 2384 Y 1560 1565 1570 1590 fr 32 NP
<6>PCLK=125000000 X 2104 2244 2284 2384 Y 1560 1565 1570 1590 fr 32 NP
<6>PCLK=125000000 X 2104 2244 2284 2384 Y 1560 1565 1570 1590 fr 32 NP
I get the message directly on the serial console.
I also own a Raspberry Pi 3 and tested Raspbian Stretch with Desktop (updated 2018-11-13 version). In the beginning I also got a blank screen.
But I found some very good info on the internet (especially https://www.mobileread.com/forums/showthread.php?t=295328 ), so I got it to work.
On my Raspberry Pi 3 I use the following in /boot/config.txt :
hdmi_force_hotplug=1
hdmi_cvt=2200 1650 33 0
hdmi_group=2
hdmi_mode=87
max_framebuffer_width=2200
max_framebuffer_height=1650
I tried to set the corresponding information in Armbian on cubietruck. But I did not find the correct config files.
Perhaps it is possible to use the EDID... info above to create a configuration?
I would prefer Armbian Stretch mainline kernel 4.14.y, but a configuration for Armbian Xenial desktop legacy kernel 3.4.y is also very welcome.
Any help welcome!
Link to armbianmonitor log (HDMI cable was plugged in while booting): http://ix.io/1vpt
For the log I booted a fresh image, so no updates. But no change with updated and beta system.
Please tell me, if you need more information.
Thanks in advance, best regards,
Richards