Radxa X4 N100 video damage

X Series X4
1

Hi there, I have a Radxa X4 with N100 processor 8G RAM and need to run a video player on it. So I made simple HTML/Javasacript page which runs in Chromium as localhost. It is really simple vanilla js. There is simple video element which plays the video. But the video is lightly damaged. I see vertical line in the middle of the screen.

The whole system runs Apache, PHP8, Python3, Chromium, VPN. All this stuff runs some simple tasks at the background but the primary purpose is to run videos.

I also tried to run the videos in pure VLC player and it has the same problem.

Can somebody tell me where could be the problem??? Lastly I tried to set up Chromium frequency to the lowest possible to 50Hz all basic codecs VP8 VP9, H.264, H.265…

Thanks for any help.

2

The video work on other PC without issue?
It may be related to the display driver. What is your operating system version?

3

Yes video is ok if I play it on PC.
The OS is Ubuntu 24
The weird is that result for top command seems to be really fine…

top - 14:23:03 up  1:08,  2 users,  load average: 0.77, 0.82, 0.88
Tasks: 220 total,   1 running, 219 sleeping,   0 stopped,   0 zombie
%Cpu(s): 26.0 us,  1.0 sy,  0.0 ni, 73.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
MiB Mem :   7719.2 total,   5085.4 free,   1397.5 used,   1586.1 buff/cache
MiB Swap:   4096.0 total,   4096.0 free,      0.0 used.   6321.6 avail Mem


PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  33592 root      20   0   32.8g 166528 138296 S  49.8   2.1   2:38.54 chrome
  33565 root      20   0 1392.2g 306460 143620 S  41.2   3.9   2:05.69 chrome
  33172 root      19  -1  749516 111908  82980 S   5.3   1.4   0:18.00 Xorg
   1356 www-data  20   0  232620  39872  29756 S   0.3   0.5   0:00.44 apache2
  30314 root      20   0       0      0      0 I   0.3   0.0   0:00.74 kworker/0:1-rcu_gp
  30382 root      20   0       0      0      0 I   0.3   0.0   0:00.17 kworker/1:0-events
  33195 root      20   0   32.8g 264544 212384 S   0.3   3.3   0:01.80 chrome
  33535 root      20   0   32.4g 168024  93912 S   0.3   2.1   0:00.80 chrome
  34262 root      20   0   14568   5836   3660 R   0.3   0.1   0:00.50 top
  35616 root      20   0   41188  30256  12396 R   0.3   0.4   0:00.84 python3
  35621 root      20   0  265964  32460  11640 S   0.3   0.4   0:00.51 python3
4

The problem appears when display is rotated from landscape to portrait via xrandr. Now I experiment with css transform: rotate() property instead of system xrandr. Its much better.

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