Can't start OS without UI

4ybaka · March 31, 2025, 5:29am

Which system do you use? Android, Ubuntu, OOWOW or others?

I installed thru OOWOW and tried to launch Ubuntu server, Ubuntu server from armbian, Debian server, home assistant and Ubuntu xfce. Only xfce showed some UI. Other OS stack at Khadas logo or black screen.

Which version of system do you use? Please provide the version of the system here:

latest on 28.3.2025

Please describe your issue below:

I can't launch terminal based OS. Screen is powered on but no terminal/cursor is visible.

Post a console log of your issue below:


Nothing is available on the screen.

viraniac · March 31, 2025, 7:10am

Checked Ubuntu 24.04 fenix server image version 1.7.3 and Armbian 25.2.3 bookworm minimal image. I don’t seem to have any issues and land up to console login just fine.

Can you share some details about your monitor? Like its model and edid information? Maybe the device is not supporting the resolution Can’t confirm until you share more information.

4ybaka · March 31, 2025, 6:12pm

It is ThinkVision P32p-20. MTM: 62a2-gar2-ww. FRU: 5D10Z26827.

I didn’t find easy way to get EDID data. Nvidia control panel doesn’t show required settings for me. Will try to figure out.

4ybaka · April 1, 2025, 6:06am

Got EDID:

Monitor
  Model name............... LEN P32p-20
  Windows description...... Lenovo P32p-20
  Manufacturer............. Lenovo
  Plug and Play ID......... LEN62A2
  Serial number............ VNA7HZTV
  Manufacture date......... 2022, ISO week 3
  Filter driver............ None
  -------------------------
  EDID revision............ 1.3
  Input signal type........ Digital
  Color bit depth.......... Undefined
  Display type............. RGB color
  Screen size.............. 700 x 390 mm (31.5 in)
  Power management......... Standby, Suspend, Active off/sleep
  Extension blocs.......... 1 (CEA/CTA-EXT)
  -------------------------
  DDC/CI................... n/a

Color characteristics
  Default color space...... Non-sRGB
  Display gamma............ 2.20
  Red chromaticity......... Rx 0.683 - Ry 0.311
  Green chromaticity....... Gx 0.263 - Gy 0.669
  Blue chromaticity........ Bx 0.150 - By 0.049
  White point (default).... Wx 0.313 - Wy 0.329
  Additional descriptors... None

Timing characteristics
  Horizontal scan range.... 30-160kHz
  Vertical scan range...... 23-76Hz
  Video bandwidth.......... 600MHz
  CVT standard............. Not supported
  GTF standard............. Not supported
  Additional descriptors... None
  Preferred timing......... Yes
  Native/preferred timing.. 3840x2160p at 60Hz (16:9)
    Modeline............... "3840x2160" 533.250 3840 3888 3920 4000 2160 2163 2168 2222 +hsync -vsync

Standard timings supported
     720 x  400p at  70Hz - IBM VGA
     640 x  480p at  60Hz - IBM VGA
     800 x  600p at  60Hz - VESA
    1024 x  768p at  60Hz - VESA
    1920 x 1200p at  60Hz - VESA STD
    1920 x 1080p at  60Hz - VESA STD
    1680 x 1050p at  60Hz - VESA STD
    1280 x  720p at  60Hz - VESA STD
    1280 x 1024p at  60Hz - VESA STD
    1440 x  900p at  60Hz - VESA STD
    1600 x  900p at  60Hz - VESA STD
    1280 x  800p at  60Hz - VESA STD

EIA/CEA/CTA-861 Information
  Revision number.......... 3
  IT underscan............. Supported
  Basic audio.............. Supported
  YCbCr 4:4:4.............. Supported
  YCbCr 4:2:2.............. Supported
  Native formats........... 1
  Detailed timing #1....... 3840x2160p at 30Hz (16:9)
    Modeline............... "3840x2160" 262.750 3840 3888 3920 4000 2160 2163 2168 2191 +hsync -vsync
  Detailed timing #2....... 2560x1440p at 60Hz (16:9)
    Modeline............... "2560x1440" 241.500 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync

CE video identifiers (VICs) - timing/formats supported
    "2560x1440" 241.500 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync
    "2560x1440" 241.500 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync
    "2560x1440" 241.500 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync
    1920 x 1080p at  60Hz - HDTV (16:9, 1:1) [Native]
    1920 x 1080p at  50Hz - HDTV (16:9, 1:1)
    1920 x 1080i at  60Hz - HDTV (16:9, 1:1)
    1920 x 1080i at  50Hz - HDTV (16:9, 1:1)
    1280 x  720p at  60Hz - HDTV (16:9, 1:1)
    1280 x  720p at  50Hz - HDTV (16:9, 1:1)
     720 x  576p at  50Hz - EDTV (16:9, 64:45)
     720 x  576p at  50Hz - EDTV (4:3, 16:15)
     720 x  480p at  60Hz - EDTV (16:9, 32:27)
     720 x  480p at  60Hz - EDTV (4:3, 8:9)
     640 x  480p at  60Hz - Default (4:3, 1:1)
    NB: NTSC refresh rate = (Hz*1000)/1001

CE audio data (formats supported)
  LPCM    2-channel, 16/20/24 bit depths at 32/44/48/88/96/176/192 kHz

CE speaker allocation data
  Channel configuration.... 2.0
  Front left/right......... Yes
  Front LFE................ No
  Front center............. No
  Rear left/right.......... No
  Rear center.............. No
  Front left/right center.. No
  Rear left/right center... No
  Rear LFE................. No

CE vendor specific data (VSDB)
  IEEE registration number. 0x000C03
  CEC physical address..... 1.0.0.0
  Supports AI (ACP, ISRC).. No
  Supports 48bpp........... No
  Supports 36bpp........... Yes
  Supports 30bpp........... Yes
  Supports YCbCr 4:4:4..... No
  Supports dual-link DVI... No
  Maximum TMDS clock....... 300MHz
  Audio/video latency (p).. n/a
  Audio/video latency (i).. n/a
  HDMI video capabilities.. Yes
  EDID screen size......... No additional info
  3D formats supported..... Not supported
  Data payload............. 030C001000303C20002001

CE vendor specific data (VSDB)
  IEEE registration number. 0xC45DD8
  CEC physical address..... 0.1.7.8
  Supports AI (ACP, ISRC).. Yes
  Supports 48bpp........... No
  Supports 36bpp........... No
  Supports 30bpp........... No
  Supports YCbCr 4:4:4..... No
  Supports dual-link DVI... No
  Maximum TMDS clock....... 15MHz

YCbCr 4:2:0 capability map data
  Data payload............. 0F03

Report information
  Date generated........... 4/1/2025
  Software revision........ 2.91.0.1043
  Data source.............. Registry
  Operating system......... 10.0.26100.2

Raw data
  00,FF,FF,FF,FF,FF,FF,00,30,AE,A2,62,01,01,01,01,03,20,01,03,80,46,27,78,EA,E5,A5,AE,4F,43,AB,26,
  0C,50,54,A1,08,00,D1,00,D1,C0,B3,00,81,C0,81,80,95,00,A9,C0,81,00,4D,D0,00,A0,F0,70,3E,80,30,20,
  35,00,B9,88,21,00,00,1A,00,00,00,FD,00,17,4C,1E,A0,3C,00,0A,20,20,20,20,20,20,00,00,00,FC,00,4C,
  45,4E,20,50,33,32,70,2D,32,30,0A,20,00,00,00,FF,00,56,4E,41,37,48,5A,54,56,0A,20,20,20,20,01,15,
  02,03,32,F1,4E,61,60,5F,90,1F,05,14,04,13,12,11,03,02,01,23,09,7F,07,83,01,00,00,6B,03,0C,00,10,
  00,30,3C,20,00,20,01,67,D8,5D,C4,01,78,80,03,E2,0F,03,A3,66,00,A0,F0,70,1F,80,30,20,35,00,B9,88,
  21,00,00,1A,56,5E,00,A0,A0,A0,29,50,30,20,35,00,B9,88,21,00,00,1A,00,00,00,00,00,00,00,00,00,00,
  00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,EE

viraniac · April 1, 2025, 6:12am

Interesting..Only 4k resolution is listed in the datasheet, but edid is showing a lot more resolution. console image frame buffer is limited to 1080p by default for VIM1S and I do see 1080p resolution defined in edid, so its bit confusing why console images is not working for you.

Can you try the following steps from OOWOW.

Flash ubuntu 24.04 server fenix 1.7.3 image. Once flashing is done, instead of choosing reboot, exit the wizard and choose rescue shell in OOWOW’s main screen
Mount emmc partition

# mount /dev/mmcblk2p1 /mnt

Add 4k2k_fb to the fdt_overlays variable in the overlays/kvim1s.dtb.overlay.env file

# sed -i '/fdt_overlays/s/$/ 4k2k_fb/g' /mnt/overlays/kvim1s.dtb.overlay.env

Unmount and reboot into ubuntu

# umount /mnt
# reboot

4ybaka · April 1, 2025, 8:55pm

I did it but it doesn’t help. I checked that file after change and it has only 1 line. I’m not sure if it is expected.

viraniac · April 2, 2025, 5:57am

changes looks ok. If you are able to ssh into the machine when booted into fenix image, can you share the output of dmesg? The default username, password and hostname of fenix image is khadas, so if you have ethernet connnected, you can just use ssh khadas@khadas.local and enter the password when prompted for the same.

4ybaka · April 5, 2025, 4:34pm

I wasn’t able to ssh to device even thru eth. So I found another monitor that works fine.