6. Known Issues

  1. Install y2k22_patch when Vivado HLS and Vitis HLS fail to export IP using export_ip command. Refer to the following Answer Record for more information on ‘Y2K22 Overflow Issue’. https://support.xilinx.com/s/article/76960?language=en_US

  2. On the vck190_es1_hdmiRx_hdmiTx and vck190_hdmiRx_hdmiTx platforms, if the HDMI TX display (blue screen) doesn’t come up right after linux boot, disconnect HDMI RX source and boot again. After the boot, connect back the HDMI RX source.

  3. Enabling the primary plane on the Video Mixer by default results in a bandwidth utilization of 2GB. A patch is applied to disable the mixer primary plane by default. To enable/disable the primary plane through module_param and devmem use the following commands. To render a test pattern on the display using a utility like modetest, the primary plane should be enabled.

    • Enable:
    echo Y > /sys/module/xlnx_mixer/parameters/mixer_primary_enable
    • Disable:
    devmem 0xa0070040 32 0x0
echo N > /sys/module/xlnx_mixer/parameters/mixer_primary_enable

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